/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 02:04:06,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 02:04:06,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 02:04:06,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 02:04:06,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 02:04:06,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 02:04:06,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 02:04:06,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 02:04:06,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 02:04:06,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 02:04:06,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 02:04:06,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 02:04:06,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 02:04:06,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 02:04:06,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 02:04:06,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 02:04:06,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 02:04:06,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 02:04:06,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 02:04:06,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 02:04:06,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 02:04:06,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 02:04:06,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 02:04:06,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 02:04:06,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 02:04:06,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 02:04:06,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 02:04:06,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 02:04:06,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 02:04:06,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 02:04:06,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 02:04:06,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 02:04:06,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 02:04:06,836 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 02:04:06,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 02:04:06,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 02:04:06,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 02:04:06,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 02:04:06,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 02:04:06,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 02:04:06,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 02:04:06,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 02:04:06,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 02:04:06,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 02:04:06,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 02:04:06,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 02:04:06,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 02:04:06,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 02:04:06,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 02:04:06,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 02:04:06,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 02:04:06,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 02:04:06,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 02:04:06,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 02:04:06,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 02:04:06,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 02:04:06,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 02:04:06,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 02:04:06,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 02:04:07,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 02:04:07,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 02:04:07,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 02:04:07,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 02:04:07,357 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 02:04:07,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-17 02:04:07,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197ad34d3/bf344bf687dd4d0d934976f7091cb45b/FLAG5d8e4792a [2020-09-17 02:04:08,071 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 02:04:08,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-17 02:04:08,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197ad34d3/bf344bf687dd4d0d934976f7091cb45b/FLAG5d8e4792a [2020-09-17 02:04:08,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197ad34d3/bf344bf687dd4d0d934976f7091cb45b [2020-09-17 02:04:08,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 02:04:08,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 02:04:08,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 02:04:08,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 02:04:08,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 02:04:08,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:04:08" (1/1) ... [2020-09-17 02:04:08,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4494d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:08, skipping insertion in model container [2020-09-17 02:04:08,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:04:08" (1/1) ... [2020-09-17 02:04:08,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 02:04:08,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 02:04:09,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 02:04:09,071 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 02:04:09,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 02:04:09,206 INFO L208 MainTranslator]: Completed translation [2020-09-17 02:04:09,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09 WrapperNode [2020-09-17 02:04:09,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 02:04:09,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 02:04:09,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 02:04:09,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 02:04:09,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 02:04:09,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 02:04:09,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 02:04:09,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 02:04:09,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (1/1) ... [2020-09-17 02:04:09,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 02:04:09,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 02:04:09,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 02:04:09,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 02:04:09,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (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 [2020-09-17 02:04:09,396 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-17 02:04:09,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-17 02:04:09,397 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-17 02:04:09,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-17 02:04:09,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 02:04:09,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 02:04:09,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 02:04:09,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 02:04:09,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 02:04:09,401 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 02:04:09,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 02:04:09,844 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-17 02:04:09,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:04:09 BoogieIcfgContainer [2020-09-17 02:04:09,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 02:04:09,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 02:04:09,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 02:04:09,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 02:04:09,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 02:04:08" (1/3) ... [2020-09-17 02:04:09,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c62a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:04:09, skipping insertion in model container [2020-09-17 02:04:09,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:04:09" (2/3) ... [2020-09-17 02:04:09,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c62a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:04:09, skipping insertion in model container [2020-09-17 02:04:09,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:04:09" (3/3) ... [2020-09-17 02:04:09,861 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-09-17 02:04:09,874 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 02:04:09,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 02:04:09,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 02:04:09,887 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 02:04:09,916 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,916 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,926 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,928 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,928 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:09,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 02:04:09,995 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:04:09,995 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:04:09,995 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:04:09,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:04:09,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:04:09,996 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:04:09,996 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:04:09,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:04:10,016 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-17 02:04:10,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 02:04:10,068 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 02:04:10,068 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 02:04:10,076 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. [2020-09-17 02:04:10,080 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 02:04:10,104 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 02:04:10,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 02:04:10,105 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. [2020-09-17 02:04:10,107 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-17 02:04:10,109 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:04:11,830 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-17 02:04:11,937 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-09-17 02:04:12,092 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-09-17 02:04:12,184 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-17 02:04:12,185 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-17 02:04:12,191 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-17 02:04:12,205 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-17 02:04:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-17 02:04:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:04:12,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:12,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:04:12,217 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:12,224 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-17 02:04:12,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:12,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516037153] [2020-09-17 02:04:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:12,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516037153] [2020-09-17 02:04:12,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:12,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:04:12,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4651544] [2020-09-17 02:04:12,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:04:12,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:12,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:04:12,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:04:12,520 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-17 02:04:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:12,583 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-17 02:04:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:04:12,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:04:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:12,604 INFO L225 Difference]: With dead ends: 35 [2020-09-17 02:04:12,604 INFO L226 Difference]: Without dead ends: 31 [2020-09-17 02:04:12,606 INFO L675 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 [2020-09-17 02:04:12,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-17 02:04:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-17 02:04:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-17 02:04:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-17 02:04:12,664 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-17 02:04:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:12,665 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-17 02:04:12,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:04:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-17 02:04:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-17 02:04:12,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:12,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:12,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 02:04:12,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:12,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:12,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-17 02:04:12,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:12,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823934703] [2020-09-17 02:04:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:12,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823934703] [2020-09-17 02:04:12,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:12,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:04:12,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135215882] [2020-09-17 02:04:12,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 02:04:12,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:12,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 02:04:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:04:12,799 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-17 02:04:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:12,825 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-17 02:04:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:04:12,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-17 02:04:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:12,826 INFO L225 Difference]: With dead ends: 26 [2020-09-17 02:04:12,827 INFO L226 Difference]: Without dead ends: 24 [2020-09-17 02:04:12,828 INFO L675 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 [2020-09-17 02:04:12,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-17 02:04:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-17 02:04:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-17 02:04:12,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-17 02:04:12,833 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-17 02:04:12,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:12,834 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-17 02:04:12,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 02:04:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-17 02:04:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 02:04:12,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:12,835 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:12,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 02:04:12,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:12,836 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-17 02:04:12,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:12,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12056014] [2020-09-17 02:04:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:12,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:12,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:12,938 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:04:12,938 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:04:12,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 02:04:12,939 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:04:12,940 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:04:12,941 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-17 02:04:12,960 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,961 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,961 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,961 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,961 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,966 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,975 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,975 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,975 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,976 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,980 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,980 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:12,989 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 02:04:12,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:04:12,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:04:12,990 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:04:12,990 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:04:12,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:04:12,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:04:12,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:04:12,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:04:12,993 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-17 02:04:12,993 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 02:04:13,039 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 02:04:13,039 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 02:04:13,042 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. [2020-09-17 02:04:13,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 02:04:13,078 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 02:04:13,078 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 02:04:13,079 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. [2020-09-17 02:04:13,081 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-17 02:04:13,081 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:04:14,566 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-17 02:04:14,827 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-17 02:04:15,002 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 02:04:15,009 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-17 02:04:15,009 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-17 02:04:15,009 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-17 02:04:15,021 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-17 02:04:15,022 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-17 02:04:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:04:15,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:15,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:04:15,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:15,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:15,023 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-17 02:04:15,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:15,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893763528] [2020-09-17 02:04:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:15,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893763528] [2020-09-17 02:04:15,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:15,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:04:15,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943740480] [2020-09-17 02:04:15,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:04:15,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:04:15,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:04:15,099 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-17 02:04:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:15,149 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-17 02:04:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:04:15,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:04:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:15,155 INFO L225 Difference]: With dead ends: 185 [2020-09-17 02:04:15,155 INFO L226 Difference]: Without dead ends: 171 [2020-09-17 02:04:15,156 INFO L675 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 [2020-09-17 02:04:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-17 02:04:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-17 02:04:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-17 02:04:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-17 02:04:15,183 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-17 02:04:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:15,184 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-17 02:04:15,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:04:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-17 02:04:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:04:15,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:15,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:15,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 02:04:15,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:15,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:15,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-17 02:04:15,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:15,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676015413] [2020-09-17 02:04:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:15,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676015413] [2020-09-17 02:04:15,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:15,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:15,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279063192] [2020-09-17 02:04:15,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:15,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:15,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:15,265 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-17 02:04:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:15,391 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-17 02:04:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:15,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:04:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:15,401 INFO L225 Difference]: With dead ends: 205 [2020-09-17 02:04:15,401 INFO L226 Difference]: Without dead ends: 201 [2020-09-17 02:04:15,402 INFO L675 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 [2020-09-17 02:04:15,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-17 02:04:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-17 02:04:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-17 02:04:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-17 02:04:15,437 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-17 02:04:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:15,438 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-17 02:04:15,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-17 02:04:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:04:15,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:15,439 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:15,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 02:04:15,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:15,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-17 02:04:15,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:15,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111378000] [2020-09-17 02:04:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:15,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111378000] [2020-09-17 02:04:15,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:15,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:15,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184255497] [2020-09-17 02:04:15,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:15,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:15,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:15,525 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-17 02:04:15,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:15,632 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-17 02:04:15,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:15,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:04:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:15,635 INFO L225 Difference]: With dead ends: 189 [2020-09-17 02:04:15,635 INFO L226 Difference]: Without dead ends: 185 [2020-09-17 02:04:15,636 INFO L675 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 [2020-09-17 02:04:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-17 02:04:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-17 02:04:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-17 02:04:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-17 02:04:15,660 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-17 02:04:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:15,666 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-17 02:04:15,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-17 02:04:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 02:04:15,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:15,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:15,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 02:04:15,668 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-17 02:04:15,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:15,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869458156] [2020-09-17 02:04:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:15,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:15,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:15,713 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:04:15,713 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:04:15,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 02:04:15,714 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:04:15,715 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:04:15,717 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-17 02:04:15,736 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,736 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,753 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,753 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,757 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,757 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,757 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,758 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,758 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:15,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-17 02:04:15,768 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:04:15,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:04:15,768 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:04:15,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:04:15,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:04:15,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:04:15,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:04:15,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:04:15,770 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-17 02:04:15,771 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 02:04:15,800 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 02:04:15,800 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 02:04:15,802 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. [2020-09-17 02:04:15,807 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 02:04:15,822 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 02:04:15,822 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 02:04:15,823 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. [2020-09-17 02:04:15,826 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-17 02:04:15,826 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:04:17,573 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-17 02:04:17,904 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 02:04:18,075 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 02:04:18,081 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-17 02:04:18,082 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-17 02:04:18,082 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-17 02:04:18,113 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-17 02:04:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-17 02:04:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:04:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:18,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:04:18,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-17 02:04:18,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:18,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648623726] [2020-09-17 02:04:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:18,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648623726] [2020-09-17 02:04:18,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:18,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:04:18,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915620738] [2020-09-17 02:04:18,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:04:18,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:18,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:04:18,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:04:18,167 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-17 02:04:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:18,209 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-17 02:04:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:04:18,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:04:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:18,218 INFO L225 Difference]: With dead ends: 600 [2020-09-17 02:04:18,218 INFO L226 Difference]: Without dead ends: 559 [2020-09-17 02:04:18,219 INFO L675 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 [2020-09-17 02:04:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-17 02:04:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-17 02:04:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-17 02:04:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-17 02:04:18,263 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-17 02:04:18,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:18,263 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-17 02:04:18,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:04:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-17 02:04:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:04:18,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:18,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:18,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 02:04:18,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:18,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-17 02:04:18,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:18,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612452628] [2020-09-17 02:04:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:18,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612452628] [2020-09-17 02:04:18,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:18,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:18,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761594194] [2020-09-17 02:04:18,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:18,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:18,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:18,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:18,334 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-17 02:04:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:18,475 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-17 02:04:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:18,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:04:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:18,483 INFO L225 Difference]: With dead ends: 817 [2020-09-17 02:04:18,484 INFO L226 Difference]: Without dead ends: 812 [2020-09-17 02:04:18,484 INFO L675 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 [2020-09-17 02:04:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-17 02:04:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-17 02:04:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-17 02:04:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-17 02:04:18,516 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-17 02:04:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:18,516 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-17 02:04:18,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-17 02:04:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:04:18,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:18,518 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:18,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 02:04:18,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-17 02:04:18,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:18,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559004169] [2020-09-17 02:04:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:18,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559004169] [2020-09-17 02:04:18,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:18,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:18,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184681758] [2020-09-17 02:04:18,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:18,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:18,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:18,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:18,595 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-17 02:04:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:18,712 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-17 02:04:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:18,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:04:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:18,720 INFO L225 Difference]: With dead ends: 843 [2020-09-17 02:04:18,720 INFO L226 Difference]: Without dead ends: 836 [2020-09-17 02:04:18,721 INFO L675 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 [2020-09-17 02:04:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-17 02:04:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-17 02:04:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-17 02:04:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-17 02:04:18,754 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-17 02:04:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:18,754 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-17 02:04:18,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-17 02:04:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:04:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:18,756 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:18,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 02:04:18,757 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-17 02:04:18,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:18,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334037884] [2020-09-17 02:04:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:18,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334037884] [2020-09-17 02:04:18,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005513806] [2020-09-17 02:04:18,852 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 [2020-09-17 02:04:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:18,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:04:18,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:19,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:19,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:04:19,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777197581] [2020-09-17 02:04:19,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:04:19,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:19,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:04:19,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:04:19,045 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-17 02:04:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:19,422 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-17 02:04:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:19,430 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:04:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:19,443 INFO L225 Difference]: With dead ends: 1059 [2020-09-17 02:04:19,444 INFO L226 Difference]: Without dead ends: 1052 [2020-09-17 02:04:19,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:04:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-17 02:04:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-17 02:04:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-17 02:04:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-17 02:04:19,480 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-17 02:04:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:19,480 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-17 02:04:19,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:04:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-17 02:04:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:04:19,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:19,483 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:19,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-17 02:04:19,700 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:19,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-17 02:04:19,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:19,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989784163] [2020-09-17 02:04:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:19,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989784163] [2020-09-17 02:04:19,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:19,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:04:19,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109521258] [2020-09-17 02:04:19,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:04:19,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:19,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:04:19,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:04:19,798 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-17 02:04:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:20,094 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-17 02:04:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:20,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:04:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:20,106 INFO L225 Difference]: With dead ends: 1053 [2020-09-17 02:04:20,107 INFO L226 Difference]: Without dead ends: 1045 [2020-09-17 02:04:20,108 INFO L675 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 [2020-09-17 02:04:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-17 02:04:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-17 02:04:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-17 02:04:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-17 02:04:20,146 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-17 02:04:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:20,146 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-17 02:04:20,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:04:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-17 02:04:20,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:04:20,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:20,148 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:20,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 02:04:20,148 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:20,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:20,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-17 02:04:20,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:20,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187268647] [2020-09-17 02:04:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:20,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187268647] [2020-09-17 02:04:20,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:20,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:20,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638344648] [2020-09-17 02:04:20,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:20,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:20,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:20,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:20,248 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-17 02:04:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:20,363 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-17 02:04:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:20,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:04:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:20,370 INFO L225 Difference]: With dead ends: 736 [2020-09-17 02:04:20,371 INFO L226 Difference]: Without dead ends: 728 [2020-09-17 02:04:20,371 INFO L675 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 [2020-09-17 02:04:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-17 02:04:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-17 02:04:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-17 02:04:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-17 02:04:20,402 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-17 02:04:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:20,403 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-17 02:04:20,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-17 02:04:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 02:04:20,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:20,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:20,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 02:04:20,406 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:20,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:20,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-17 02:04:20,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:20,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130341031] [2020-09-17 02:04:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:20,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:20,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:20,466 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:04:20,467 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:04:20,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-17 02:04:20,467 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:04:20,468 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:04:20,469 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-17 02:04:20,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,491 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,491 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,492 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,492 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,501 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,501 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,502 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,509 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,509 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,511 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,511 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,515 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:20,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-17 02:04:20,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:04:20,529 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:04:20,529 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:04:20,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:04:20,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:04:20,530 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:04:20,530 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:04:20,530 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:04:20,532 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-17 02:04:20,532 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 02:04:20,555 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 02:04:20,555 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 02:04:20,558 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. [2020-09-17 02:04:20,562 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 02:04:20,588 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 02:04:20,589 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 02:04:20,591 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. [2020-09-17 02:04:20,596 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-17 02:04:20,596 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:04:22,634 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-17 02:04:22,743 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 02:04:22,993 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-17 02:04:23,226 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 02:04:23,353 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-17 02:04:23,353 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-17 02:04:23,354 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-17 02:04:23,497 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-17 02:04:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-17 02:04:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:04:23,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:23,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:04:23,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-17 02:04:23,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:23,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047949334] [2020-09-17 02:04:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:23,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047949334] [2020-09-17 02:04:23,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:23,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:04:23,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772276423] [2020-09-17 02:04:23,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:04:23,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:23,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:04:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:04:23,548 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-17 02:04:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:23,606 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-17 02:04:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:04:23,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:04:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:23,624 INFO L225 Difference]: With dead ends: 1889 [2020-09-17 02:04:23,624 INFO L226 Difference]: Without dead ends: 1767 [2020-09-17 02:04:23,625 INFO L675 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 [2020-09-17 02:04:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-17 02:04:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-17 02:04:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-17 02:04:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-17 02:04:23,730 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-17 02:04:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:23,730 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-17 02:04:23,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:04:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-17 02:04:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:04:23,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:23,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:23,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-17 02:04:23,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:23,732 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-17 02:04:23,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:23,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33657999] [2020-09-17 02:04:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:23,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33657999] [2020-09-17 02:04:23,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:23,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:23,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315524309] [2020-09-17 02:04:23,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:23,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:23,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:23,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:23,808 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-17 02:04:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:23,977 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-17 02:04:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:23,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:04:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:24,013 INFO L225 Difference]: With dead ends: 2905 [2020-09-17 02:04:24,013 INFO L226 Difference]: Without dead ends: 2899 [2020-09-17 02:04:24,015 INFO L675 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 [2020-09-17 02:04:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-17 02:04:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-17 02:04:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-17 02:04:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-17 02:04:24,186 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-17 02:04:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:24,186 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-17 02:04:24,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-17 02:04:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:04:24,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:24,187 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:24,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-17 02:04:24,188 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:24,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-17 02:04:24,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:24,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942666805] [2020-09-17 02:04:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:24,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942666805] [2020-09-17 02:04:24,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:24,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:24,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650994590] [2020-09-17 02:04:24,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:24,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:24,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:24,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:24,276 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-17 02:04:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:24,420 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-17 02:04:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:24,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:04:24,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:24,469 INFO L225 Difference]: With dead ends: 3204 [2020-09-17 02:04:24,470 INFO L226 Difference]: Without dead ends: 3194 [2020-09-17 02:04:24,470 INFO L675 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 [2020-09-17 02:04:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-17 02:04:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-17 02:04:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-17 02:04:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-17 02:04:24,618 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-17 02:04:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:24,621 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-17 02:04:24,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-17 02:04:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:04:24,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:24,622 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:24,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-17 02:04:24,622 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-17 02:04:24,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:24,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567593220] [2020-09-17 02:04:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:24,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567593220] [2020-09-17 02:04:24,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220997974] [2020-09-17 02:04:24,715 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 [2020-09-17 02:04:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:24,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:04:24,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:24,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:24,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:04:24,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517468913] [2020-09-17 02:04:24,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:04:24,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:24,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:04:24,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:04:24,943 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-17 02:04:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:25,440 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-17 02:04:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:25,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:04:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:25,499 INFO L225 Difference]: With dead ends: 4556 [2020-09-17 02:04:25,500 INFO L226 Difference]: Without dead ends: 4546 [2020-09-17 02:04:25,503 INFO L675 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 [2020-09-17 02:04:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-17 02:04:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-17 02:04:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-17 02:04:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-17 02:04:25,696 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-17 02:04:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:25,697 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-17 02:04:25,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:04:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-17 02:04:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:04:25,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:25,698 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:25,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-17 02:04:25,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:25,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:25,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-17 02:04:25,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:25,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830140541] [2020-09-17 02:04:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:26,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830140541] [2020-09-17 02:04:26,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:26,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:04:26,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370031260] [2020-09-17 02:04:26,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:04:26,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:04:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:04:26,076 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-17 02:04:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:26,439 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-17 02:04:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:26,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:04:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:26,465 INFO L225 Difference]: With dead ends: 4612 [2020-09-17 02:04:26,466 INFO L226 Difference]: Without dead ends: 4601 [2020-09-17 02:04:26,466 INFO L675 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 [2020-09-17 02:04:26,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-17 02:04:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-17 02:04:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-17 02:04:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-17 02:04:26,613 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-17 02:04:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:26,614 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-17 02:04:26,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:04:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-17 02:04:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:04:26,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:26,615 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:26,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-17 02:04:26,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:26,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-17 02:04:26,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:26,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727031934] [2020-09-17 02:04:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:26,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727031934] [2020-09-17 02:04:26,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:26,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:26,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745360677] [2020-09-17 02:04:26,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:26,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:26,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:26,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:26,691 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-17 02:04:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:26,850 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-17 02:04:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:26,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:04:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:26,870 INFO L225 Difference]: With dead ends: 3265 [2020-09-17 02:04:26,870 INFO L226 Difference]: Without dead ends: 3250 [2020-09-17 02:04:26,871 INFO L675 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 [2020-09-17 02:04:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-17 02:04:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-17 02:04:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-17 02:04:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-17 02:04:27,064 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-17 02:04:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:27,064 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-17 02:04:27,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-17 02:04:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:27,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:27,067 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:27,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-17 02:04:27,067 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:27,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:27,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-17 02:04:27,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:27,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330196446] [2020-09-17 02:04:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:04:27,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330196446] [2020-09-17 02:04:27,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884345332] [2020-09-17 02:04:27,198 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 [2020-09-17 02:04:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:27,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:04:27,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:04:27,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:27,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:04:27,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831518442] [2020-09-17 02:04:27,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:04:27,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:04:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:04:27,383 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-17 02:04:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:27,810 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-17 02:04:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:27,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:04:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:27,833 INFO L225 Difference]: With dead ends: 4825 [2020-09-17 02:04:27,834 INFO L226 Difference]: Without dead ends: 4813 [2020-09-17 02:04:27,835 INFO L675 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 [2020-09-17 02:04:27,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-17 02:04:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-17 02:04:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-17 02:04:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-17 02:04:27,979 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-17 02:04:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:27,981 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-17 02:04:27,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:04:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-17 02:04:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:27,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:27,985 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:28,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:04:28,199 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:28,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:28,200 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-17 02:04:28,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:28,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020377014] [2020-09-17 02:04:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:28,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020377014] [2020-09-17 02:04:28,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947744126] [2020-09-17 02:04:28,301 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 [2020-09-17 02:04:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:28,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:04:28,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:28,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:28,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:04:28,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960353734] [2020-09-17 02:04:28,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:04:28,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:28,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:04:28,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:04:28,469 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-17 02:04:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:28,917 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-17 02:04:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:28,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:04:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:28,937 INFO L225 Difference]: With dead ends: 4942 [2020-09-17 02:04:28,938 INFO L226 Difference]: Without dead ends: 4925 [2020-09-17 02:04:28,938 INFO L675 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 [2020-09-17 02:04:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-17 02:04:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-17 02:04:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-17 02:04:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-17 02:04:29,060 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-17 02:04:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:29,060 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-17 02:04:29,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:04:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-17 02:04:29,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:29,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:29,062 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:29,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:04:29,278 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-17 02:04:29,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:29,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747627076] [2020-09-17 02:04:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:29,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747627076] [2020-09-17 02:04:29,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:29,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:04:29,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288646077] [2020-09-17 02:04:29,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:04:29,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:29,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:04:29,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:04:29,374 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-17 02:04:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:29,736 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-17 02:04:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:29,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:04:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:29,766 INFO L225 Difference]: With dead ends: 4934 [2020-09-17 02:04:29,766 INFO L226 Difference]: Without dead ends: 4917 [2020-09-17 02:04:29,767 INFO L675 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 [2020-09-17 02:04:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-17 02:04:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-17 02:04:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-17 02:04:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-17 02:04:29,925 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-17 02:04:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:29,925 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-17 02:04:29,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:04:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-17 02:04:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:29,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:29,928 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:29,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-17 02:04:29,928 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:29,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-17 02:04:29,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:29,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024031765] [2020-09-17 02:04:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:30,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024031765] [2020-09-17 02:04:30,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:30,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:04:30,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494720474] [2020-09-17 02:04:30,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:04:30,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:30,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:04:30,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:04:30,035 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-17 02:04:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:30,385 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-17 02:04:30,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:30,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:04:30,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:30,405 INFO L225 Difference]: With dead ends: 4774 [2020-09-17 02:04:30,405 INFO L226 Difference]: Without dead ends: 4757 [2020-09-17 02:04:30,406 INFO L675 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 [2020-09-17 02:04:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-17 02:04:30,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-17 02:04:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-17 02:04:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-17 02:04:30,525 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-17 02:04:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:30,526 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-17 02:04:30,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:04:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-17 02:04:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:30,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:30,528 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:30,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-17 02:04:30,529 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:30,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-17 02:04:30,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:30,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780291099] [2020-09-17 02:04:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:30,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780291099] [2020-09-17 02:04:30,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784457849] [2020-09-17 02:04:30,641 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 [2020-09-17 02:04:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:30,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:04:30,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:30,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:30,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:04:30,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199134695] [2020-09-17 02:04:30,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:04:30,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:30,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:04:30,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:04:30,918 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-17 02:04:31,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:31,903 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-17 02:04:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:31,904 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:04:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:31,932 INFO L225 Difference]: With dead ends: 6025 [2020-09-17 02:04:31,932 INFO L226 Difference]: Without dead ends: 6017 [2020-09-17 02:04:31,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:04:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-17 02:04:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-17 02:04:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-17 02:04:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-17 02:04:32,053 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-17 02:04:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:32,055 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-17 02:04:32,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:04:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-17 02:04:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:32,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:32,057 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:32,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-17 02:04:32,272 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-17 02:04:32,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:32,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477365929] [2020-09-17 02:04:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:04:32,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477365929] [2020-09-17 02:04:32,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275010775] [2020-09-17 02:04:32,413 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 [2020-09-17 02:04:32,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:04:32,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:04:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:04:32,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:04:32,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:32,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:04:32,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682205249] [2020-09-17 02:04:32,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:04:32,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:04:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:04:32,618 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-17 02:04:33,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:33,700 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-17 02:04:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:33,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:04:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:33,721 INFO L225 Difference]: With dead ends: 5914 [2020-09-17 02:04:33,721 INFO L226 Difference]: Without dead ends: 5903 [2020-09-17 02:04:33,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:04:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-17 02:04:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-17 02:04:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-17 02:04:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-17 02:04:33,840 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-17 02:04:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:33,840 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-17 02:04:33,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:04:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-17 02:04:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:33,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:33,842 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:34,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:04:34,055 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:34,056 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-17 02:04:34,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:34,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039823010] [2020-09-17 02:04:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:34,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039823010] [2020-09-17 02:04:34,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241594877] [2020-09-17 02:04:34,165 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 [2020-09-17 02:04:34,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:04:34,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:04:34,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:04:34,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:34,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:34,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:04:34,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042468345] [2020-09-17 02:04:34,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:04:34,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:34,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:04:34,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:04:34,378 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-17 02:04:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:35,404 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-17 02:04:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:35,405 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:04:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:35,423 INFO L225 Difference]: With dead ends: 5907 [2020-09-17 02:04:35,423 INFO L226 Difference]: Without dead ends: 5899 [2020-09-17 02:04:35,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:04:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-17 02:04:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-17 02:04:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-17 02:04:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-17 02:04:35,542 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-17 02:04:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:35,542 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-17 02:04:35,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:04:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-17 02:04:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:35,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:35,547 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:35,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-17 02:04:35,761 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:35,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:35,762 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-17 02:04:35,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:35,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78070004] [2020-09-17 02:04:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:35,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78070004] [2020-09-17 02:04:35,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138154322] [2020-09-17 02:04:35,880 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 [2020-09-17 02:04:35,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:04:35,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:04:35,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:04:35,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:36,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:36,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:04:36,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852411763] [2020-09-17 02:04:36,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:04:36,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:36,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:04:36,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:04:36,083 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-17 02:04:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:37,146 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-17 02:04:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:37,147 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:04:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:37,159 INFO L225 Difference]: With dead ends: 5835 [2020-09-17 02:04:37,160 INFO L226 Difference]: Without dead ends: 5824 [2020-09-17 02:04:37,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:04:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-17 02:04:37,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-17 02:04:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-17 02:04:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-17 02:04:37,265 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-17 02:04:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:37,265 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-17 02:04:37,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:04:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-17 02:04:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:37,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:37,268 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:37,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-17 02:04:37,483 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-17 02:04:37,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:37,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297027841] [2020-09-17 02:04:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:37,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297027841] [2020-09-17 02:04:37,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:37,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:04:37,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10666785] [2020-09-17 02:04:37,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:04:37,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:37,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:04:37,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:04:37,645 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-17 02:04:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:38,528 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-17 02:04:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:38,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:04:38,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:38,542 INFO L225 Difference]: With dead ends: 5820 [2020-09-17 02:04:38,542 INFO L226 Difference]: Without dead ends: 5812 [2020-09-17 02:04:38,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:04:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-17 02:04:38,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-17 02:04:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-17 02:04:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-17 02:04:38,634 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-17 02:04:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:38,635 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-17 02:04:38,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:04:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-17 02:04:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:38,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:38,637 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:38,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-17 02:04:38,638 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:38,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:38,638 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-17 02:04:38,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:38,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380833692] [2020-09-17 02:04:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:38,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380833692] [2020-09-17 02:04:38,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:38,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:04:38,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776074127] [2020-09-17 02:04:38,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:04:38,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:38,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:04:38,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:04:38,759 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-17 02:04:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:39,692 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-17 02:04:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:39,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:04:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:39,705 INFO L225 Difference]: With dead ends: 5717 [2020-09-17 02:04:39,705 INFO L226 Difference]: Without dead ends: 5705 [2020-09-17 02:04:39,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:04:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-17 02:04:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-17 02:04:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-17 02:04:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-17 02:04:39,801 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-17 02:04:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:39,802 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-17 02:04:39,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:04:39,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-17 02:04:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:39,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:39,804 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:39,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-17 02:04:39,804 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:39,804 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-17 02:04:39,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:39,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14790106] [2020-09-17 02:04:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:04:39,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14790106] [2020-09-17 02:04:39,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:39,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:39,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999191931] [2020-09-17 02:04:39,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:39,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:39,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:39,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:39,881 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-17 02:04:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:39,985 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-17 02:04:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:39,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 02:04:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:39,994 INFO L225 Difference]: With dead ends: 2762 [2020-09-17 02:04:39,995 INFO L226 Difference]: Without dead ends: 2746 [2020-09-17 02:04:39,997 INFO L675 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 [2020-09-17 02:04:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-17 02:04:40,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-17 02:04:40,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-17 02:04:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-17 02:04:40,068 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-17 02:04:40,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:40,068 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-17 02:04:40,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-17 02:04:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-17 02:04:40,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:40,071 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:40,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-17 02:04:40,072 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:04:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-17 02:04:40,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:40,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007382036] [2020-09-17 02:04:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:40,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:04:40,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:04:40,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:04:40,128 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:04:40,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-17 02:04:40,129 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:04:40,132 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:04:40,132 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-17 02:04:40,155 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,155 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,157 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,159 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,160 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,160 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,161 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,161 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,162 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,172 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,172 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,179 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,179 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,182 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,182 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:04:40,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-17 02:04:40,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:04:40,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:04:40,202 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:04:40,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:04:40,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:04:40,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:04:40,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:04:40,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:04:40,206 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-17 02:04:40,206 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 02:04:40,228 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 02:04:40,229 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 02:04:40,230 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. [2020-09-17 02:04:40,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 02:04:40,255 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 02:04:40,256 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 02:04:40,257 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. [2020-09-17 02:04:40,262 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-17 02:04:40,263 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:04:42,110 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 02:04:42,337 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-17 02:04:42,638 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-09-17 02:04:42,903 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 02:04:42,997 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-17 02:04:42,997 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-17 02:04:42,998 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-17 02:04:43,389 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-17 02:04:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-17 02:04:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:04:43,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:43,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:04:43,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:43,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-17 02:04:43,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:43,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027597498] [2020-09-17 02:04:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:43,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027597498] [2020-09-17 02:04:43,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:43,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:04:43,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760594021] [2020-09-17 02:04:43,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:04:43,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:43,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:04:43,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:04:43,424 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-17 02:04:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:43,516 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-17 02:04:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:04:43,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:04:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:43,540 INFO L225 Difference]: With dead ends: 5844 [2020-09-17 02:04:43,540 INFO L226 Difference]: Without dead ends: 5479 [2020-09-17 02:04:43,540 INFO L675 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 [2020-09-17 02:04:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-17 02:04:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-17 02:04:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-17 02:04:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-17 02:04:43,738 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-17 02:04:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:43,738 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-17 02:04:43,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:04:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-17 02:04:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:04:43,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:43,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:43,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-17 02:04:43,739 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:43,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-17 02:04:43,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:43,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111971764] [2020-09-17 02:04:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:43,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111971764] [2020-09-17 02:04:43,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:43,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:43,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554483516] [2020-09-17 02:04:43,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:43,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:43,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:43,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:43,788 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-17 02:04:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:43,962 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-17 02:04:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:43,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:04:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:43,994 INFO L225 Difference]: With dead ends: 9673 [2020-09-17 02:04:43,994 INFO L226 Difference]: Without dead ends: 9666 [2020-09-17 02:04:43,995 INFO L675 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 [2020-09-17 02:04:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-17 02:04:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-17 02:04:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-17 02:04:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-17 02:04:44,899 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-17 02:04:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:44,899 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-17 02:04:44,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-17 02:04:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:04:44,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:44,900 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:44,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-17 02:04:44,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-17 02:04:44,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:44,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586252645] [2020-09-17 02:04:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:44,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586252645] [2020-09-17 02:04:44,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:44,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:44,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225547515] [2020-09-17 02:04:44,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:44,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:44,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:44,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:44,957 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-17 02:04:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:45,147 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-17 02:04:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:45,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:04:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:45,181 INFO L225 Difference]: With dead ends: 11081 [2020-09-17 02:04:45,182 INFO L226 Difference]: Without dead ends: 11068 [2020-09-17 02:04:45,182 INFO L675 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 [2020-09-17 02:04:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-17 02:04:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-17 02:04:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-17 02:04:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-17 02:04:45,448 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-17 02:04:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:45,449 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-17 02:04:45,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-17 02:04:45,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:04:45,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:45,450 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:45,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-17 02:04:45,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-17 02:04:45,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:45,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528900240] [2020-09-17 02:04:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:45,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528900240] [2020-09-17 02:04:45,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916363364] [2020-09-17 02:04:45,522 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 [2020-09-17 02:04:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:04:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:45,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:45,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:04:45,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643364703] [2020-09-17 02:04:45,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:04:45,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:45,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:04:45,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:04:45,680 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-17 02:04:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:46,223 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-17 02:04:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:46,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:04:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:46,289 INFO L225 Difference]: With dead ends: 16749 [2020-09-17 02:04:46,289 INFO L226 Difference]: Without dead ends: 16736 [2020-09-17 02:04:46,290 INFO L675 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 [2020-09-17 02:04:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-17 02:04:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-17 02:04:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-17 02:04:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-17 02:04:46,910 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-17 02:04:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:46,910 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-17 02:04:46,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:04:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-17 02:04:46,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:04:46,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:46,911 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:47,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:04:47,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:47,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-17 02:04:47,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:47,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073054003] [2020-09-17 02:04:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:47,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073054003] [2020-09-17 02:04:47,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:47,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:04:47,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247501753] [2020-09-17 02:04:47,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:04:47,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:04:47,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:04:47,192 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-17 02:04:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:47,646 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-17 02:04:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:47,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:04:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:47,694 INFO L225 Difference]: With dead ends: 17085 [2020-09-17 02:04:47,694 INFO L226 Difference]: Without dead ends: 17071 [2020-09-17 02:04:47,695 INFO L675 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 [2020-09-17 02:04:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-17 02:04:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-17 02:04:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-17 02:04:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-17 02:04:48,016 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-17 02:04:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:48,016 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-17 02:04:48,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:04:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-17 02:04:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:04:48,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:48,018 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:48,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-17 02:04:48,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-17 02:04:48,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:48,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500432988] [2020-09-17 02:04:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:48,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500432988] [2020-09-17 02:04:48,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:48,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:48,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336320154] [2020-09-17 02:04:48,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:04:48,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:48,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:04:48,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:04:48,091 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-17 02:04:48,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:48,267 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-17 02:04:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:04:48,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:04:48,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:48,914 INFO L225 Difference]: With dead ends: 12234 [2020-09-17 02:04:48,914 INFO L226 Difference]: Without dead ends: 12212 [2020-09-17 02:04:48,915 INFO L675 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 [2020-09-17 02:04:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-17 02:04:49,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-17 02:04:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-17 02:04:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-17 02:04:49,196 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-17 02:04:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:49,197 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-17 02:04:49,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:04:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-17 02:04:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:49,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:49,198 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:49,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-17 02:04:49,198 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:49,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-17 02:04:49,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:49,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971332963] [2020-09-17 02:04:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:04:49,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971332963] [2020-09-17 02:04:49,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041777505] [2020-09-17 02:04:49,278 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 [2020-09-17 02:04:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:49,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:04:49,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:04:49,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:49,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:04:49,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868691751] [2020-09-17 02:04:49,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:04:49,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:49,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:04:49,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:04:49,431 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-17 02:04:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:49,882 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-17 02:04:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:49,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:04:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:49,942 INFO L225 Difference]: With dead ends: 19016 [2020-09-17 02:04:49,942 INFO L226 Difference]: Without dead ends: 18998 [2020-09-17 02:04:49,942 INFO L675 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 [2020-09-17 02:04:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-17 02:04:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-17 02:04:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-17 02:04:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-17 02:04:50,318 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-17 02:04:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:50,319 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-17 02:04:50,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:04:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-17 02:04:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:50,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:50,320 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:50,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-17 02:04:50,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:50,531 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-17 02:04:50,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:50,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890841540] [2020-09-17 02:04:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:50,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890841540] [2020-09-17 02:04:50,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116472788] [2020-09-17 02:04:50,614 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 [2020-09-17 02:04:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:50,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:04:50,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:50,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:50,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:04:50,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421515317] [2020-09-17 02:04:50,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:04:50,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:50,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:04:50,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:04:50,794 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-17 02:04:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:51,359 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-17 02:04:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:51,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:04:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:51,424 INFO L225 Difference]: With dead ends: 19670 [2020-09-17 02:04:51,424 INFO L226 Difference]: Without dead ends: 19645 [2020-09-17 02:04:51,425 INFO L675 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 [2020-09-17 02:04:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-17 02:04:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-17 02:04:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-17 02:04:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-17 02:04:51,830 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-17 02:04:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:51,830 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-17 02:04:51,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:04:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-17 02:04:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:51,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:51,832 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:52,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-17 02:04:52,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:52,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-17 02:04:52,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:52,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409215555] [2020-09-17 02:04:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:52,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409215555] [2020-09-17 02:04:52,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:52,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:04:52,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597042412] [2020-09-17 02:04:52,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:04:52,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:52,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:04:52,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:04:52,112 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-17 02:04:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:52,632 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-17 02:04:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:52,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:04:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:52,730 INFO L225 Difference]: With dead ends: 19852 [2020-09-17 02:04:52,731 INFO L226 Difference]: Without dead ends: 19827 [2020-09-17 02:04:52,733 INFO L675 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 [2020-09-17 02:04:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-17 02:04:53,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-17 02:04:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-17 02:04:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-17 02:04:53,548 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-17 02:04:53,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:53,549 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-17 02:04:53,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:04:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-17 02:04:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:04:53,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:53,550 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:53,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-17 02:04:53,551 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:53,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:53,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-17 02:04:53,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:53,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894894109] [2020-09-17 02:04:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:04:53,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894894109] [2020-09-17 02:04:53,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:53,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:04:53,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527124123] [2020-09-17 02:04:53,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:04:53,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:53,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:04:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:04:53,636 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-17 02:04:54,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:54,078 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-17 02:04:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:04:54,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:04:54,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:54,137 INFO L225 Difference]: With dead ends: 19555 [2020-09-17 02:04:54,137 INFO L226 Difference]: Without dead ends: 19530 [2020-09-17 02:04:54,138 INFO L675 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 [2020-09-17 02:04:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-17 02:04:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-17 02:04:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-17 02:04:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-17 02:04:54,517 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-17 02:04:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:54,517 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-17 02:04:54,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:04:54,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-17 02:04:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:54,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:54,519 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:54,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-17 02:04:54,519 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:54,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-17 02:04:54,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:54,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634431309] [2020-09-17 02:04:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:54,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634431309] [2020-09-17 02:04:54,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165941443] [2020-09-17 02:04:54,635 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 [2020-09-17 02:04:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:54,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:04:54,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:54,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:54,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:04:54,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617247516] [2020-09-17 02:04:54,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:04:54,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:54,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:04:54,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:04:54,889 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-17 02:04:56,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:56,129 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-17 02:04:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:56,130 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:04:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:56,206 INFO L225 Difference]: With dead ends: 26969 [2020-09-17 02:04:56,206 INFO L226 Difference]: Without dead ends: 26957 [2020-09-17 02:04:56,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:04:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-17 02:04:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-17 02:04:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-17 02:04:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-17 02:04:56,824 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-17 02:04:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:56,825 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-17 02:04:56,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:04:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-17 02:04:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:56,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:56,826 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:57,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:04:57,027 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:57,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:57,028 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-17 02:04:57,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:57,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621544485] [2020-09-17 02:04:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:04:57,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621544485] [2020-09-17 02:04:57,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076897857] [2020-09-17 02:04:57,150 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 [2020-09-17 02:04:57,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:04:57,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:04:57,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:04:57,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:04:57,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:57,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:04:57,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113987192] [2020-09-17 02:04:57,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:04:57,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:57,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:04:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:04:57,378 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-17 02:04:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:58,571 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-17 02:04:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:04:58,572 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:04:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:58,648 INFO L225 Difference]: With dead ends: 26661 [2020-09-17 02:04:58,649 INFO L226 Difference]: Without dead ends: 26645 [2020-09-17 02:04:58,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:04:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-17 02:04:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-17 02:04:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-17 02:04:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-17 02:04:59,346 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-17 02:04:59,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:59,346 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-17 02:04:59,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:04:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-17 02:04:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:04:59,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:59,348 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:59,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-17 02:04:59,549 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:59,549 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-17 02:04:59,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:59,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164487621] [2020-09-17 02:04:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:59,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164487621] [2020-09-17 02:04:59,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562965240] [2020-09-17 02:04:59,643 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 [2020-09-17 02:04:59,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:04:59,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:04:59,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:04:59,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:04:59,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:59,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:04:59,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403360096] [2020-09-17 02:04:59,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:04:59,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:59,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:04:59,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:04:59,886 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-17 02:05:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:01,093 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-17 02:05:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:01,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:01,184 INFO L225 Difference]: With dead ends: 26686 [2020-09-17 02:05:01,184 INFO L226 Difference]: Without dead ends: 26674 [2020-09-17 02:05:01,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-17 02:05:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-17 02:05:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-17 02:05:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-17 02:05:01,638 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-17 02:05:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:01,638 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-17 02:05:01,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-17 02:05:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:01,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:01,639 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:01,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:01,841 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:01,841 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-17 02:05:01,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:01,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661916279] [2020-09-17 02:05:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:01,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661916279] [2020-09-17 02:05:01,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800479881] [2020-09-17 02:05:01,943 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 [2020-09-17 02:05:02,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:05:02,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:02,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:02,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:02,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:02,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:02,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054780404] [2020-09-17 02:05:02,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:02,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:02,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:02,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:02,162 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-17 02:05:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:03,661 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-17 02:05:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:03,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:03,754 INFO L225 Difference]: With dead ends: 26489 [2020-09-17 02:05:03,754 INFO L226 Difference]: Without dead ends: 26473 [2020-09-17 02:05:03,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-17 02:05:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-17 02:05:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-17 02:05:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-17 02:05:04,200 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-17 02:05:04,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:04,200 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-17 02:05:04,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:04,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-17 02:05:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:04,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:04,202 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:04,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-17 02:05:04,403 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-17 02:05:04,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:04,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709458968] [2020-09-17 02:05:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:04,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709458968] [2020-09-17 02:05:04,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:04,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:04,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522899514] [2020-09-17 02:05:04,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:04,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:04,480 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-17 02:05:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:04,698 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-17 02:05:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:04,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 02:05:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:04,753 INFO L225 Difference]: With dead ends: 13251 [2020-09-17 02:05:04,754 INFO L226 Difference]: Without dead ends: 13220 [2020-09-17 02:05:04,754 INFO L675 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 [2020-09-17 02:05:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-17 02:05:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-17 02:05:05,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-17 02:05:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-17 02:05:05,098 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-17 02:05:05,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:05,098 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-17 02:05:05,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-17 02:05:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:05,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:05,100 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:05,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-17 02:05:05,101 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:05,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:05,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-17 02:05:05,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:05,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542403592] [2020-09-17 02:05:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:05,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542403592] [2020-09-17 02:05:05,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:05,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:05,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550472257] [2020-09-17 02:05:05,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:05,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:05,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:05,210 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-17 02:05:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:06,299 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-17 02:05:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:06,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:05:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:06,387 INFO L225 Difference]: With dead ends: 29788 [2020-09-17 02:05:06,387 INFO L226 Difference]: Without dead ends: 29770 [2020-09-17 02:05:06,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-17 02:05:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-17 02:05:07,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-17 02:05:07,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-17 02:05:07,058 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-17 02:05:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:07,058 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-17 02:05:07,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-17 02:05:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:07,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:07,060 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:07,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-17 02:05:07,061 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:07,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-17 02:05:07,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:07,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552210869] [2020-09-17 02:05:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:07,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552210869] [2020-09-17 02:05:07,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:07,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:07,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878970569] [2020-09-17 02:05:07,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:07,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:07,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:07,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:07,165 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-17 02:05:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:08,148 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-17 02:05:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:08,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:05:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:08,211 INFO L225 Difference]: With dead ends: 29379 [2020-09-17 02:05:08,211 INFO L226 Difference]: Without dead ends: 29356 [2020-09-17 02:05:08,212 INFO L675 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 [2020-09-17 02:05:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-17 02:05:08,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-17 02:05:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-17 02:05:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-17 02:05:08,658 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-17 02:05:08,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:08,658 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-17 02:05:08,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-17 02:05:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:05:08,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:08,660 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:08,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-17 02:05:08,660 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:08,660 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-17 02:05:08,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:08,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623430875] [2020-09-17 02:05:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:08,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623430875] [2020-09-17 02:05:08,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430800728] [2020-09-17 02:05:08,747 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 [2020-09-17 02:05:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:08,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:08,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:08,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:08,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530890416] [2020-09-17 02:05:08,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:08,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:08,936 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-17 02:05:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:09,444 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-17 02:05:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:09,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:05:09,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:09,493 INFO L225 Difference]: With dead ends: 19727 [2020-09-17 02:05:09,493 INFO L226 Difference]: Without dead ends: 19703 [2020-09-17 02:05:09,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-17 02:05:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-17 02:05:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-17 02:05:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-17 02:05:09,965 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-17 02:05:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:09,965 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-17 02:05:09,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-17 02:05:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:05:09,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:09,967 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:10,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-17 02:05:10,168 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:10,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-17 02:05:10,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:10,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334771376] [2020-09-17 02:05:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:05:10,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334771376] [2020-09-17 02:05:10,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396854781] [2020-09-17 02:05:10,247 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 [2020-09-17 02:05:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:10,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:10,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:05:10,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:10,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:10,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840439888] [2020-09-17 02:05:10,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:10,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:10,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:10,399 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-17 02:05:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:10,860 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-17 02:05:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:10,864 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:05:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:10,913 INFO L225 Difference]: With dead ends: 20694 [2020-09-17 02:05:10,914 INFO L226 Difference]: Without dead ends: 20666 [2020-09-17 02:05:10,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-17 02:05:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-17 02:05:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-17 02:05:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-17 02:05:11,284 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-17 02:05:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:11,285 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-17 02:05:11,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-17 02:05:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:05:11,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:11,287 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:11,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:11,488 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:11,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:11,488 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-17 02:05:11,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:11,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122960125] [2020-09-17 02:05:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122960125] [2020-09-17 02:05:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208459300] [2020-09-17 02:05:11,568 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 [2020-09-17 02:05:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:11,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:11,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:11,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:11,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:11,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123292055] [2020-09-17 02:05:11,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:11,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:11,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:11,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:11,718 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-17 02:05:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:12,225 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-17 02:05:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:12,226 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:05:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:12,293 INFO L225 Difference]: With dead ends: 21396 [2020-09-17 02:05:12,293 INFO L226 Difference]: Without dead ends: 21359 [2020-09-17 02:05:12,294 INFO L675 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 [2020-09-17 02:05:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-17 02:05:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-17 02:05:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-17 02:05:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-17 02:05:12,669 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-17 02:05:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:12,669 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-17 02:05:12,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-17 02:05:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:05:12,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:12,671 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:12,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-17 02:05:12,872 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:12,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:12,873 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-17 02:05:12,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:12,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306106686] [2020-09-17 02:05:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:13,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306106686] [2020-09-17 02:05:13,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:13,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:13,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302623062] [2020-09-17 02:05:13,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:13,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:13,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:13,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:13,112 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-17 02:05:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:13,591 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-17 02:05:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:13,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:05:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:13,651 INFO L225 Difference]: With dead ends: 21489 [2020-09-17 02:05:13,651 INFO L226 Difference]: Without dead ends: 21452 [2020-09-17 02:05:13,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 02:05:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-17 02:05:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-17 02:05:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-17 02:05:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-17 02:05:14,025 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-17 02:05:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:14,025 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-17 02:05:14,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-17 02:05:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:05:14,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:14,027 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:14,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-17 02:05:14,027 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:14,028 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-17 02:05:14,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:14,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859943693] [2020-09-17 02:05:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:14,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859943693] [2020-09-17 02:05:14,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:14,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:14,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824466780] [2020-09-17 02:05:14,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:14,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:14,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:14,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:14,119 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-17 02:05:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:14,551 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-17 02:05:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:14,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:05:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:14,600 INFO L225 Difference]: With dead ends: 21198 [2020-09-17 02:05:14,601 INFO L226 Difference]: Without dead ends: 21161 [2020-09-17 02:05:14,601 INFO L675 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 [2020-09-17 02:05:14,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-17 02:05:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-17 02:05:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-17 02:05:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-17 02:05:14,953 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-17 02:05:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:14,953 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-17 02:05:14,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-17 02:05:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:05:14,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:14,957 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:14,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-17 02:05:14,957 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:14,957 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-17 02:05:14,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:14,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61660396] [2020-09-17 02:05:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:15,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61660396] [2020-09-17 02:05:15,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:15,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:15,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647771121] [2020-09-17 02:05:15,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:15,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:15,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:15,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:15,044 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-17 02:05:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:15,495 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-17 02:05:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:15,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:05:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:15,549 INFO L225 Difference]: With dead ends: 21067 [2020-09-17 02:05:15,549 INFO L226 Difference]: Without dead ends: 21030 [2020-09-17 02:05:15,550 INFO L675 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 [2020-09-17 02:05:15,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-17 02:05:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-17 02:05:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-17 02:05:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-17 02:05:15,914 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-17 02:05:15,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:15,914 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-17 02:05:15,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-17 02:05:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:15,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:15,917 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:15,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-17 02:05:15,917 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-17 02:05:15,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:15,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634287480] [2020-09-17 02:05:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:16,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634287480] [2020-09-17 02:05:16,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063117339] [2020-09-17 02:05:16,024 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 [2020-09-17 02:05:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:16,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:16,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:16,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:16,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:16,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150048580] [2020-09-17 02:05:16,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:16,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:16,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:16,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:16,399 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-17 02:05:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:17,767 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-17 02:05:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:17,767 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:17,838 INFO L225 Difference]: With dead ends: 30145 [2020-09-17 02:05:17,839 INFO L226 Difference]: Without dead ends: 30125 [2020-09-17 02:05:17,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-17 02:05:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-17 02:05:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-17 02:05:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-17 02:05:18,313 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-17 02:05:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:18,313 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-17 02:05:18,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-17 02:05:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:18,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:18,317 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:18,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-17 02:05:18,518 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:18,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-17 02:05:18,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:18,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778595729] [2020-09-17 02:05:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:18,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778595729] [2020-09-17 02:05:18,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95093077] [2020-09-17 02:05:18,620 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 [2020-09-17 02:05:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:18,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:18,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:18,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:18,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:18,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570332184] [2020-09-17 02:05:18,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:18,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:18,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:18,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:18,869 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-17 02:05:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:20,050 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-17 02:05:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:20,051 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:20,123 INFO L225 Difference]: With dead ends: 29696 [2020-09-17 02:05:20,124 INFO L226 Difference]: Without dead ends: 29676 [2020-09-17 02:05:20,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-17 02:05:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-17 02:05:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-17 02:05:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-17 02:05:20,588 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-17 02:05:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:20,588 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-17 02:05:20,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:20,588 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-17 02:05:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:20,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:20,591 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:20,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-17 02:05:20,792 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:20,792 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-17 02:05:20,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:20,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755458426] [2020-09-17 02:05:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:21,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755458426] [2020-09-17 02:05:21,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243777802] [2020-09-17 02:05:21,057 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 [2020-09-17 02:05:21,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:05:21,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:21,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:21,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:21,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:21,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:21,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644127778] [2020-09-17 02:05:21,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:21,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:21,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:21,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:21,277 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-17 02:05:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:22,477 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-17 02:05:22,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:22,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:22,547 INFO L225 Difference]: With dead ends: 29267 [2020-09-17 02:05:22,548 INFO L226 Difference]: Without dead ends: 29245 [2020-09-17 02:05:22,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:22,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-17 02:05:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-17 02:05:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-17 02:05:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-17 02:05:22,981 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-17 02:05:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:22,981 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-17 02:05:22,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-17 02:05:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:22,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:22,984 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:23,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-17 02:05:23,185 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:23,185 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-17 02:05:23,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:23,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482163494] [2020-09-17 02:05:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:23,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482163494] [2020-09-17 02:05:23,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976066424] [2020-09-17 02:05:23,291 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 [2020-09-17 02:05:23,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:05:23,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:23,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:23,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:23,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:23,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:23,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403044190] [2020-09-17 02:05:23,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:23,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:23,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:23,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:23,528 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-17 02:05:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:24,926 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-17 02:05:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:24,926 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:25,003 INFO L225 Difference]: With dead ends: 28920 [2020-09-17 02:05:25,003 INFO L226 Difference]: Without dead ends: 28898 [2020-09-17 02:05:25,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-17 02:05:25,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-17 02:05:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-17 02:05:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-17 02:05:25,471 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-17 02:05:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:25,471 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-17 02:05:25,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-17 02:05:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:25,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:25,474 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:25,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:25,675 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:25,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-17 02:05:25,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:25,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787546103] [2020-09-17 02:05:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 02:05:25,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787546103] [2020-09-17 02:05:25,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973296889] [2020-09-17 02:05:25,782 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 [2020-09-17 02:05:25,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 02:05:25,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:25,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:25,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 02:05:26,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:26,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:26,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625780920] [2020-09-17 02:05:26,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:26,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:26,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:26,039 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-17 02:05:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:27,271 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-17 02:05:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:27,272 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:27,342 INFO L225 Difference]: With dead ends: 29038 [2020-09-17 02:05:27,342 INFO L226 Difference]: Without dead ends: 29018 [2020-09-17 02:05:27,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-17 02:05:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-17 02:05:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-17 02:05:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-17 02:05:27,768 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-17 02:05:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:27,769 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-17 02:05:27,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-17 02:05:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:27,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:27,772 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:27,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-17 02:05:27,973 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-17 02:05:27,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:27,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936846952] [2020-09-17 02:05:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:05:28,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936846952] [2020-09-17 02:05:28,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923803526] [2020-09-17 02:05:28,076 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 [2020-09-17 02:05:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:28,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:28,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:05:28,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:28,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:28,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320051575] [2020-09-17 02:05:28,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:28,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:28,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:28,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:28,297 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-17 02:05:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:29,647 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-17 02:05:29,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:29,648 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:29,715 INFO L225 Difference]: With dead ends: 29417 [2020-09-17 02:05:29,716 INFO L226 Difference]: Without dead ends: 29397 [2020-09-17 02:05:29,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-17 02:05:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-17 02:05:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-17 02:05:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-17 02:05:30,162 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-17 02:05:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:30,162 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-17 02:05:30,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-17 02:05:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:30,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:30,166 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:30,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:30,367 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:30,367 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-17 02:05:30,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:30,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781303329] [2020-09-17 02:05:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:05:30,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781303329] [2020-09-17 02:05:30,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927406232] [2020-09-17 02:05:30,470 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 [2020-09-17 02:05:30,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:05:30,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:30,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:30,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:05:30,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:30,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:30,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019314288] [2020-09-17 02:05:30,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:30,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:30,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:30,719 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-17 02:05:32,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:32,056 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-17 02:05:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:32,057 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:32,132 INFO L225 Difference]: With dead ends: 29064 [2020-09-17 02:05:32,133 INFO L226 Difference]: Without dead ends: 29037 [2020-09-17 02:05:32,133 INFO L675 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 [2020-09-17 02:05:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-17 02:05:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-17 02:05:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-17 02:05:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-17 02:05:32,574 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-17 02:05:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:32,575 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-17 02:05:32,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-17 02:05:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:32,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:32,578 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:32,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-17 02:05:32,779 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:32,779 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-17 02:05:32,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:32,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792562958] [2020-09-17 02:05:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:05:32,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792562958] [2020-09-17 02:05:32,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052559042] [2020-09-17 02:05:32,892 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 [2020-09-17 02:05:32,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:05:32,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:32,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:33,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:05:33,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:33,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:33,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021416939] [2020-09-17 02:05:33,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:33,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:33,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:33,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:33,134 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-17 02:05:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:34,347 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-17 02:05:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:34,348 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:34,415 INFO L225 Difference]: With dead ends: 28523 [2020-09-17 02:05:34,415 INFO L226 Difference]: Without dead ends: 28501 [2020-09-17 02:05:34,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-17 02:05:34,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-17 02:05:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-17 02:05:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-17 02:05:34,899 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-17 02:05:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:34,899 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-17 02:05:34,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-17 02:05:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:34,903 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:35,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:35,105 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-17 02:05:35,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:35,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780528274] [2020-09-17 02:05:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:35,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780528274] [2020-09-17 02:05:35,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222244045] [2020-09-17 02:05:35,206 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 [2020-09-17 02:05:35,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:05:35,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:35,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:35,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:35,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:35,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:35,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903596289] [2020-09-17 02:05:35,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:35,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:35,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:35,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:35,481 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-17 02:05:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:36,617 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-17 02:05:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:36,618 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:36,684 INFO L225 Difference]: With dead ends: 28636 [2020-09-17 02:05:36,684 INFO L226 Difference]: Without dead ends: 28616 [2020-09-17 02:05:36,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-17 02:05:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-17 02:05:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-17 02:05:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-17 02:05:37,255 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-17 02:05:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:37,256 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-17 02:05:37,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-17 02:05:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:37,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:37,259 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:37,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-17 02:05:37,465 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:37,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-17 02:05:37,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:37,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736188119] [2020-09-17 02:05:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:37,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736188119] [2020-09-17 02:05:37,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880134537] [2020-09-17 02:05:37,563 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 [2020-09-17 02:05:37,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:05:37,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:37,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:37,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:37,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:37,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895476736] [2020-09-17 02:05:37,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:37,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:37,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:37,824 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-17 02:05:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:38,983 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-17 02:05:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:38,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:39,051 INFO L225 Difference]: With dead ends: 28297 [2020-09-17 02:05:39,051 INFO L226 Difference]: Without dead ends: 28277 [2020-09-17 02:05:39,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-17 02:05:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-17 02:05:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-17 02:05:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-17 02:05:39,471 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-17 02:05:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:39,471 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-17 02:05:39,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-17 02:05:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:39,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:39,475 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:39,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:39,675 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:39,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:39,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-17 02:05:39,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:39,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874723290] [2020-09-17 02:05:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:39,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874723290] [2020-09-17 02:05:39,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271224200] [2020-09-17 02:05:39,781 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 [2020-09-17 02:05:39,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:05:39,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:39,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:39,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:40,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:40,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:40,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162931829] [2020-09-17 02:05:40,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:40,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:40,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:40,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:40,021 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-17 02:05:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:41,420 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-17 02:05:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:41,421 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:41,491 INFO L225 Difference]: With dead ends: 28565 [2020-09-17 02:05:41,491 INFO L226 Difference]: Without dead ends: 28538 [2020-09-17 02:05:41,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-17 02:05:41,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-17 02:05:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-17 02:05:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-17 02:05:41,920 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-17 02:05:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:41,920 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-17 02:05:41,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-17 02:05:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:41,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:41,923 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:42,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-17 02:05:42,124 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-17 02:05:42,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:42,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281688371] [2020-09-17 02:05:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:42,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281688371] [2020-09-17 02:05:42,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464706254] [2020-09-17 02:05:42,230 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 [2020-09-17 02:05:42,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:05:42,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:42,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:42,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:05:42,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:42,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:42,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96202023] [2020-09-17 02:05:42,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:42,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:42,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:42,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:42,440 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-17 02:05:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:43,855 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-17 02:05:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:43,856 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:05:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:43,924 INFO L225 Difference]: With dead ends: 28213 [2020-09-17 02:05:43,924 INFO L226 Difference]: Without dead ends: 28186 [2020-09-17 02:05:43,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-17 02:05:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-17 02:05:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-17 02:05:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-17 02:05:44,330 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-17 02:05:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:44,330 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-17 02:05:44,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-17 02:05:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:44,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:44,333 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:44,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:44,534 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-17 02:05:44,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:44,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505925300] [2020-09-17 02:05:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:44,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505925300] [2020-09-17 02:05:44,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:44,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:44,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742857933] [2020-09-17 02:05:44,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:44,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:44,646 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-17 02:05:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:46,121 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-17 02:05:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:46,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:05:46,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:46,245 INFO L225 Difference]: With dead ends: 28226 [2020-09-17 02:05:46,246 INFO L226 Difference]: Without dead ends: 28206 [2020-09-17 02:05:46,247 INFO L675 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 [2020-09-17 02:05:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-17 02:05:46,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-17 02:05:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-17 02:05:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-17 02:05:46,903 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-17 02:05:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:46,903 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-17 02:05:46,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-17 02:05:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:46,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:46,908 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:46,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-17 02:05:46,908 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:46,908 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-17 02:05:46,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:46,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457093026] [2020-09-17 02:05:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:47,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457093026] [2020-09-17 02:05:47,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:47,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:47,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740147497] [2020-09-17 02:05:47,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:47,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:47,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:47,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:47,026 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-17 02:05:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:48,131 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-17 02:05:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:48,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:05:48,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:48,198 INFO L225 Difference]: With dead ends: 27801 [2020-09-17 02:05:48,198 INFO L226 Difference]: Without dead ends: 27781 [2020-09-17 02:05:48,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-17 02:05:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-17 02:05:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-17 02:05:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-17 02:05:48,602 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-17 02:05:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:48,603 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-17 02:05:48,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-17 02:05:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:48,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:48,606 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:48,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-17 02:05:48,606 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:48,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:48,606 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-17 02:05:48,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:48,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812380826] [2020-09-17 02:05:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:48,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812380826] [2020-09-17 02:05:48,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:48,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:48,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133659024] [2020-09-17 02:05:48,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:48,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:48,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:48,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:48,710 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-17 02:05:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:49,783 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-17 02:05:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:49,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:05:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:50,012 INFO L225 Difference]: With dead ends: 27548 [2020-09-17 02:05:50,013 INFO L226 Difference]: Without dead ends: 27521 [2020-09-17 02:05:50,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-17 02:05:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-17 02:05:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-17 02:05:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-17 02:05:50,389 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-17 02:05:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:50,389 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-17 02:05:50,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-17 02:05:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:50,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:50,392 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:50,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-17 02:05:50,393 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:50,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:50,393 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-17 02:05:50,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:50,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753633814] [2020-09-17 02:05:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:50,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753633814] [2020-09-17 02:05:50,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:50,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:50,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798084407] [2020-09-17 02:05:50,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:50,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:50,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:50,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:50,497 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-17 02:05:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:51,584 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-17 02:05:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:51,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:05:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:51,652 INFO L225 Difference]: With dead ends: 27167 [2020-09-17 02:05:51,653 INFO L226 Difference]: Without dead ends: 27147 [2020-09-17 02:05:51,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-17 02:05:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-17 02:05:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-17 02:05:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-17 02:05:52,040 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-17 02:05:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:52,040 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-17 02:05:52,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-17 02:05:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:52,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:52,043 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:52,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-17 02:05:52,044 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:52,044 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-17 02:05:52,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:52,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862721615] [2020-09-17 02:05:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:52,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862721615] [2020-09-17 02:05:52,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:52,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:52,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802372479] [2020-09-17 02:05:52,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:52,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:52,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:52,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:52,150 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-17 02:05:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:53,298 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-17 02:05:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:53,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:05:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:53,361 INFO L225 Difference]: With dead ends: 26955 [2020-09-17 02:05:53,361 INFO L226 Difference]: Without dead ends: 26928 [2020-09-17 02:05:53,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-17 02:05:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-17 02:05:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-17 02:05:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-17 02:05:53,758 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-17 02:05:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:53,758 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-17 02:05:53,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-17 02:05:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:53,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:53,762 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:53,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-17 02:05:53,762 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:53,762 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-17 02:05:53,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:53,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678108378] [2020-09-17 02:05:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:53,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678108378] [2020-09-17 02:05:53,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:53,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:53,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096546049] [2020-09-17 02:05:53,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:53,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:53,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:53,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:53,873 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-17 02:05:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:55,417 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-17 02:05:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:55,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:05:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:55,512 INFO L225 Difference]: With dead ends: 26632 [2020-09-17 02:05:55,513 INFO L226 Difference]: Without dead ends: 26605 [2020-09-17 02:05:55,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-17 02:05:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-17 02:05:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-17 02:05:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-17 02:05:56,162 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-17 02:05:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:56,163 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-17 02:05:56,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:56,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-17 02:05:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:05:56,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:56,166 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:56,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-17 02:05:56,166 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:56,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-17 02:05:56,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:56,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115983989] [2020-09-17 02:05:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:05:56,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115983989] [2020-09-17 02:05:56,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:56,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:56,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653145376] [2020-09-17 02:05:56,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:56,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:56,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:56,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:56,234 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-17 02:05:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:56,424 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-17 02:05:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:56,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 02:05:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:56,457 INFO L225 Difference]: With dead ends: 11919 [2020-09-17 02:05:56,458 INFO L226 Difference]: Without dead ends: 11887 [2020-09-17 02:05:56,458 INFO L675 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 [2020-09-17 02:05:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-17 02:05:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-17 02:05:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-17 02:05:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-17 02:05:56,707 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-17 02:05:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:56,708 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-17 02:05:56,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-17 02:05:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-17 02:05:56,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:56,711 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:56,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-17 02:05:56,712 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-17 02:05:56,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:56,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727083136] [2020-09-17 02:05:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:56,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:56,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:56,746 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:05:56,746 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:05:56,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-17 02:05:56,747 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:05:56,747 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:05:56,748 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-17 02:05:56,762 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,762 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,765 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,765 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,767 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,768 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,768 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,768 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,768 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,768 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,768 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,777 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,777 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,777 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,777 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,778 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,781 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,781 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,790 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,790 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,790 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,791 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,792 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,793 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,793 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,793 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,794 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,795 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,804 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:56,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-17 02:05:56,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:05:56,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:05:56,817 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:05:56,817 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:05:56,817 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:05:56,817 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:05:56,817 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:05:56,817 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:05:56,820 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-17 02:05:56,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 02:05:56,840 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 02:05:56,840 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 02:05:56,842 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. [2020-09-17 02:05:56,848 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 02:05:56,867 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 02:05:56,867 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 02:05:56,868 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. [2020-09-17 02:05:56,874 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-17 02:05:56,874 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:05:59,377 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-17 02:05:59,805 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 02:06:00,002 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 02:06:00,021 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-17 02:06:00,021 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-17 02:06:00,022 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-17 02:06:01,709 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-17 02:06:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-17 02:06:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:06:01,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:01,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:06:01,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:01,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-17 02:06:01,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:01,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756993671] [2020-09-17 02:06:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:06:01,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756993671] [2020-09-17 02:06:01,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:01,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:06:01,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351336505] [2020-09-17 02:06:01,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:06:01,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:01,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:06:01,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:06:01,734 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-17 02:06:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:01,899 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-17 02:06:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:06:01,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:06:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:01,954 INFO L225 Difference]: With dead ends: 17885 [2020-09-17 02:06:01,954 INFO L226 Difference]: Without dead ends: 16791 [2020-09-17 02:06:01,955 INFO L675 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 [2020-09-17 02:06:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-17 02:06:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-17 02:06:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-17 02:06:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-17 02:06:03,018 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-17 02:06:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:03,018 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-17 02:06:03,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:06:03,018 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-17 02:06:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:06:03,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:03,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:03,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-17 02:06:03,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:03,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-17 02:06:03,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:03,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013356050] [2020-09-17 02:06:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:06:03,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013356050] [2020-09-17 02:06:03,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:03,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:06:03,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604876911] [2020-09-17 02:06:03,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:06:03,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:03,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:06:03,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:06:03,068 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-17 02:06:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:03,374 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-17 02:06:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:06:03,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:06:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:03,467 INFO L225 Difference]: With dead ends: 30985 [2020-09-17 02:06:03,467 INFO L226 Difference]: Without dead ends: 30977 [2020-09-17 02:06:03,467 INFO L675 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 [2020-09-17 02:06:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-17 02:06:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-17 02:06:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-17 02:06:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-17 02:06:04,531 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-17 02:06:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:04,531 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-17 02:06:04,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:06:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-17 02:06:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:06:04,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:04,532 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:04,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-17 02:06:04,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:04,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:04,533 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-17 02:06:04,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:04,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21323909] [2020-09-17 02:06:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:04,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21323909] [2020-09-17 02:06:04,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:04,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:06:04,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944721644] [2020-09-17 02:06:04,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:06:04,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:06:04,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:06:04,579 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-17 02:06:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:04,906 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-17 02:06:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:06:04,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:06:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:05,029 INFO L225 Difference]: With dead ends: 36296 [2020-09-17 02:06:05,029 INFO L226 Difference]: Without dead ends: 36280 [2020-09-17 02:06:05,029 INFO L675 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 [2020-09-17 02:06:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-17 02:06:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-17 02:06:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-17 02:06:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-17 02:06:08,085 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-17 02:06:08,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:08,085 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-17 02:06:08,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:06:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-17 02:06:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:06:08,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:08,086 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:08,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-17 02:06:08,086 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:08,087 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-17 02:06:08,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:08,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519887987] [2020-09-17 02:06:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:06:08,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519887987] [2020-09-17 02:06:08,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917907419] [2020-09-17 02:06:08,154 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 [2020-09-17 02:06:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:08,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:06:08,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:06:08,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:08,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:06:08,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516589654] [2020-09-17 02:06:08,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:06:08,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:08,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:06:08,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:06:08,365 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-17 02:06:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:09,154 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-17 02:06:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:09,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:06:09,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:09,323 INFO L225 Difference]: With dead ends: 56720 [2020-09-17 02:06:09,324 INFO L226 Difference]: Without dead ends: 56704 [2020-09-17 02:06:09,324 INFO L675 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 [2020-09-17 02:06:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-17 02:06:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-17 02:06:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-17 02:06:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-17 02:06:10,855 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-17 02:06:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:10,855 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-17 02:06:10,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:06:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-17 02:06:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:06:10,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:10,856 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:11,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-17 02:06:11,057 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-17 02:06:11,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:11,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037005560] [2020-09-17 02:06:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:11,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037005560] [2020-09-17 02:06:11,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:11,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:06:11,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904861662] [2020-09-17 02:06:11,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:06:11,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:06:11,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:06:11,133 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-17 02:06:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:12,503 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-17 02:06:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:12,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:06:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:12,688 INFO L225 Difference]: With dead ends: 58078 [2020-09-17 02:06:12,688 INFO L226 Difference]: Without dead ends: 58061 [2020-09-17 02:06:12,688 INFO L675 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 [2020-09-17 02:06:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-17 02:06:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-17 02:06:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-17 02:06:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-17 02:06:14,278 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-17 02:06:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:14,279 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-17 02:06:14,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:06:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-17 02:06:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:06:14,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:14,279 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:14,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-17 02:06:14,280 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-17 02:06:14,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:14,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114296697] [2020-09-17 02:06:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:06:14,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114296697] [2020-09-17 02:06:14,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:14,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:06:14,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100170342] [2020-09-17 02:06:14,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:06:14,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:06:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:06:14,337 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-17 02:06:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:14,723 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-17 02:06:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:06:14,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:06:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:14,856 INFO L225 Difference]: With dead ends: 41885 [2020-09-17 02:06:14,856 INFO L226 Difference]: Without dead ends: 41856 [2020-09-17 02:06:14,857 INFO L675 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 [2020-09-17 02:06:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-17 02:06:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-17 02:06:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-17 02:06:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-17 02:06:18,521 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-17 02:06:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:18,521 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-17 02:06:18,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:06:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-17 02:06:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:06:18,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:18,522 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:18,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-17 02:06:18,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:18,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:18,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-17 02:06:18,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:18,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478470520] [2020-09-17 02:06:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:18,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478470520] [2020-09-17 02:06:18,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244456368] [2020-09-17 02:06:18,593 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 [2020-09-17 02:06:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:18,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:06:18,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:18,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:18,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:06:18,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516464456] [2020-09-17 02:06:18,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:06:18,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:18,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:06:18,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:06:18,783 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-17 02:06:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:19,559 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-17 02:06:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:19,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:06:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:19,765 INFO L225 Difference]: With dead ends: 66831 [2020-09-17 02:06:19,765 INFO L226 Difference]: Without dead ends: 66807 [2020-09-17 02:06:19,765 INFO L675 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 [2020-09-17 02:06:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-17 02:06:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-17 02:06:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-17 02:06:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-17 02:06:22,315 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-17 02:06:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:22,315 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-17 02:06:22,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:06:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-17 02:06:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:06:22,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:22,316 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:22,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-17 02:06:22,517 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-17 02:06:22,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:22,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925553203] [2020-09-17 02:06:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:22,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925553203] [2020-09-17 02:06:22,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310435468] [2020-09-17 02:06:22,594 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 [2020-09-17 02:06:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:22,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:06:22,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:22,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:22,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:06:22,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726134927] [2020-09-17 02:06:22,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:06:22,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:22,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:06:22,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:06:22,803 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-17 02:06:23,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:23,642 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-17 02:06:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:23,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:06:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:23,862 INFO L225 Difference]: With dead ends: 69484 [2020-09-17 02:06:23,862 INFO L226 Difference]: Without dead ends: 69451 [2020-09-17 02:06:23,862 INFO L675 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 [2020-09-17 02:06:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-17 02:06:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-17 02:06:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-17 02:06:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-17 02:06:25,704 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-17 02:06:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:25,704 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-17 02:06:25,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:06:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-17 02:06:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:06:25,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:25,705 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:25,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:25,906 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-17 02:06:25,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:25,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313391929] [2020-09-17 02:06:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:06:25,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313391929] [2020-09-17 02:06:25,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:25,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:06:25,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438443485] [2020-09-17 02:06:25,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:06:25,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:25,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:06:25,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:06:25,978 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-17 02:06:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:27,365 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-17 02:06:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:27,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:06:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:27,622 INFO L225 Difference]: With dead ends: 70510 [2020-09-17 02:06:27,622 INFO L226 Difference]: Without dead ends: 70477 [2020-09-17 02:06:27,622 INFO L675 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 [2020-09-17 02:06:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-17 02:06:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-17 02:06:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-17 02:06:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-17 02:06:29,479 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-17 02:06:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:29,479 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-17 02:06:29,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:06:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-17 02:06:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:06:29,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:29,480 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:29,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-17 02:06:29,480 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:29,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-17 02:06:29,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:29,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143474139] [2020-09-17 02:06:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:06:29,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143474139] [2020-09-17 02:06:29,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:29,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:06:29,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469162589] [2020-09-17 02:06:29,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:06:29,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:29,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:06:29,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:06:29,561 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-17 02:06:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:30,352 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-17 02:06:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:30,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:06:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:30,584 INFO L225 Difference]: With dead ends: 70096 [2020-09-17 02:06:30,584 INFO L226 Difference]: Without dead ends: 70063 [2020-09-17 02:06:30,584 INFO L675 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 [2020-09-17 02:06:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-17 02:06:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-17 02:06:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-17 02:06:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-17 02:06:34,669 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-17 02:06:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:34,670 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-17 02:06:34,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:06:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-17 02:06:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:34,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:34,671 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:34,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-17 02:06:34,671 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-17 02:06:34,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:34,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629682890] [2020-09-17 02:06:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:06:34,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629682890] [2020-09-17 02:06:34,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750713715] [2020-09-17 02:06:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-17 02:06:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:34,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:34,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:06:35,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:35,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:35,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714422062] [2020-09-17 02:06:35,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:35,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:35,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:35,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:35,030 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-17 02:06:36,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:36,825 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-17 02:06:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:36,826 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:06:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:37,134 INFO L225 Difference]: With dead ends: 100731 [2020-09-17 02:06:37,134 INFO L226 Difference]: Without dead ends: 100715 [2020-09-17 02:06:37,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-17 02:06:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-17 02:06:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-17 02:06:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-17 02:06:40,003 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-17 02:06:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:40,003 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-17 02:06:40,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-17 02:06:40,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:40,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:40,004 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:40,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-17 02:06:40,205 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-17 02:06:40,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:40,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984767478] [2020-09-17 02:06:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:40,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984767478] [2020-09-17 02:06:40,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497117076] [2020-09-17 02:06:40,307 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 [2020-09-17 02:06:40,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:06:40,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:40,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:40,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:40,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:40,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:40,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204488755] [2020-09-17 02:06:40,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:40,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:40,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:40,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:40,568 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-17 02:06:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:43,995 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-17 02:06:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:43,996 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:06:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:44,306 INFO L225 Difference]: With dead ends: 99876 [2020-09-17 02:06:44,306 INFO L226 Difference]: Without dead ends: 99855 [2020-09-17 02:06:44,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-17 02:06:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-17 02:06:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-17 02:06:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-17 02:06:47,191 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-17 02:06:47,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:47,191 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-17 02:06:47,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-17 02:06:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:47,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:47,192 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:47,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:47,393 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:47,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:47,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-17 02:06:47,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:47,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121042891] [2020-09-17 02:06:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:47,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121042891] [2020-09-17 02:06:47,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456953447] [2020-09-17 02:06:47,495 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 [2020-09-17 02:06:47,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:06:47,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:47,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:47,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:47,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:47,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:47,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39739253] [2020-09-17 02:06:47,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:47,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:47,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:47,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:47,751 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-17 02:06:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:49,564 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-17 02:06:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:49,564 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:06:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:49,868 INFO L225 Difference]: With dead ends: 100071 [2020-09-17 02:06:49,869 INFO L226 Difference]: Without dead ends: 100055 [2020-09-17 02:06:49,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-17 02:06:54,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-17 02:06:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-17 02:06:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-17 02:06:54,993 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-17 02:06:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:54,993 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-17 02:06:54,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-17 02:06:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:54,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:54,995 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:55,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-17 02:06:55,196 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:06:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-17 02:06:55,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:55,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582073092] [2020-09-17 02:06:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:55,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582073092] [2020-09-17 02:06:55,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507622327] [2020-09-17 02:06:55,299 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 [2020-09-17 02:06:55,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:06:55,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:55,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:55,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:55,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:55,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:55,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077338247] [2020-09-17 02:06:55,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:55,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:55,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:55,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:55,555 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-17 02:06:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:57,245 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-17 02:06:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:57,246 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:06:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:57,549 INFO L225 Difference]: With dead ends: 99523 [2020-09-17 02:06:57,549 INFO L226 Difference]: Without dead ends: 99502 [2020-09-17 02:06:57,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-17 02:07:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-17 02:07:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-17 02:07:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-17 02:07:00,378 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-17 02:07:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:00,379 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-17 02:07:00,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:07:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-17 02:07:00,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:07:00,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:00,380 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:00,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-17 02:07:00,581 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:00,581 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-17 02:07:00,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:00,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492161989] [2020-09-17 02:07:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:07:00,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492161989] [2020-09-17 02:07:00,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:00,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:07:00,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708404812] [2020-09-17 02:07:00,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:07:00,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:00,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:07:00,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:07:00,687 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-17 02:07:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:02,414 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-17 02:07:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:02,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:07:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:02,737 INFO L225 Difference]: With dead ends: 99710 [2020-09-17 02:07:02,738 INFO L226 Difference]: Without dead ends: 99694 [2020-09-17 02:07:02,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:07:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-17 02:07:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-17 02:07:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-17 02:07:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-17 02:07:05,692 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-17 02:07:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:05,693 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-17 02:07:05,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:07:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-17 02:07:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:07:05,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:05,694 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:05,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-17 02:07:05,694 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:05,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:05,694 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-17 02:07:05,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:05,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568947442] [2020-09-17 02:07:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:07:05,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568947442] [2020-09-17 02:07:05,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:05,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:07:05,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416120624] [2020-09-17 02:07:05,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:07:05,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:05,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:07:05,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:07:05,800 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-17 02:07:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:07,477 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-17 02:07:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:07,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:07:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:07,792 INFO L225 Difference]: With dead ends: 98863 [2020-09-17 02:07:07,792 INFO L226 Difference]: Without dead ends: 98841 [2020-09-17 02:07:07,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:07:09,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-17 02:07:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-17 02:07:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-17 02:07:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-17 02:07:10,526 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-17 02:07:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:10,526 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-17 02:07:10,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:07:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-17 02:07:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:07:10,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:10,528 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:10,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-17 02:07:10,528 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-17 02:07:10,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:10,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263160647] [2020-09-17 02:07:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:07:10,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263160647] [2020-09-17 02:07:10,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:10,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:07:10,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627225407] [2020-09-17 02:07:10,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:07:10,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:10,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:07:10,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:07:10,591 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-17 02:07:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:11,027 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-17 02:07:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:07:11,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 02:07:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:11,208 INFO L225 Difference]: With dead ends: 46463 [2020-09-17 02:07:11,208 INFO L226 Difference]: Without dead ends: 46417 [2020-09-17 02:07:11,209 INFO L675 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 [2020-09-17 02:07:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-17 02:07:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-17 02:07:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-17 02:07:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-17 02:07:13,130 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-17 02:07:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:13,130 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-17 02:07:13,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:07:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-17 02:07:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:07:13,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:13,132 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:13,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-17 02:07:13,132 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-17 02:07:13,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:13,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936937285] [2020-09-17 02:07:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:07:13,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936937285] [2020-09-17 02:07:13,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585567215] [2020-09-17 02:07:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-17 02:07:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:13,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:07:13,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:07:13,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:13,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:07:13,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088757491] [2020-09-17 02:07:13,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:07:13,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:13,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:07:13,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:07:13,421 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-17 02:07:14,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:14,472 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-17 02:07:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:14,473 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:07:14,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:14,753 INFO L225 Difference]: With dead ends: 75380 [2020-09-17 02:07:14,754 INFO L226 Difference]: Without dead ends: 75344 [2020-09-17 02:07:14,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:07:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-17 02:07:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-17 02:07:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-17 02:07:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-17 02:07:17,347 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-17 02:07:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:17,347 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-17 02:07:17,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:07:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-17 02:07:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:07:17,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:17,349 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:17,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:07:17,550 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-17 02:07:17,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:17,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013902305] [2020-09-17 02:07:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:07:17,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013902305] [2020-09-17 02:07:17,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898345122] [2020-09-17 02:07:17,633 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 [2020-09-17 02:07:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:17,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:07:17,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:07:17,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:17,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:07:17,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414156021] [2020-09-17 02:07:17,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:07:17,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:17,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:07:17,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:07:17,847 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-17 02:07:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:18,766 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-17 02:07:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:18,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:07:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:19,094 INFO L225 Difference]: With dead ends: 79487 [2020-09-17 02:07:19,094 INFO L226 Difference]: Without dead ends: 79445 [2020-09-17 02:07:19,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:07:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-17 02:07:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-17 02:07:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-17 02:07:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-17 02:07:21,850 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-17 02:07:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:21,851 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-17 02:07:21,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:07:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-17 02:07:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:07:21,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:21,853 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:22,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:07:22,059 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-17 02:07:22,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:22,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212632285] [2020-09-17 02:07:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:07:22,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212632285] [2020-09-17 02:07:22,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710218736] [2020-09-17 02:07:22,135 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 [2020-09-17 02:07:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:22,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:07:22,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:07:22,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:22,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:07:22,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517047267] [2020-09-17 02:07:22,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:07:22,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:22,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:07:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:07:22,313 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-17 02:07:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:23,245 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-17 02:07:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:23,246 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:07:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:23,541 INFO L225 Difference]: With dead ends: 82728 [2020-09-17 02:07:23,542 INFO L226 Difference]: Without dead ends: 82673 [2020-09-17 02:07:23,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:07:24,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-17 02:07:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-17 02:07:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-17 02:07:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-17 02:07:26,344 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-17 02:07:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:26,344 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-17 02:07:26,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:07:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-17 02:07:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:07:26,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:26,347 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:26,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:07:26,548 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-17 02:07:26,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:26,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57436680] [2020-09-17 02:07:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:07:26,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57436680] [2020-09-17 02:07:26,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:26,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:07:26,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289412061] [2020-09-17 02:07:26,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:07:26,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:26,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:07:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:07:26,631 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-17 02:07:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:27,567 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-17 02:07:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:27,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:07:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:27,850 INFO L225 Difference]: With dead ends: 83507 [2020-09-17 02:07:27,851 INFO L226 Difference]: Without dead ends: 83452 [2020-09-17 02:07:27,851 INFO L675 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 [2020-09-17 02:07:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-17 02:07:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-17 02:07:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-17 02:07:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-17 02:07:30,701 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-17 02:07:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:30,701 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-17 02:07:30,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:07:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-17 02:07:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:07:30,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:30,704 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:30,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-17 02:07:30,704 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:30,704 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-17 02:07:30,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:30,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592942072] [2020-09-17 02:07:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:07:30,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592942072] [2020-09-17 02:07:30,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:30,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:07:30,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215493007] [2020-09-17 02:07:30,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:07:30,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:30,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:07:30,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:07:30,783 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-17 02:07:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:31,728 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-17 02:07:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:31,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:07:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:32,028 INFO L225 Difference]: With dead ends: 83523 [2020-09-17 02:07:32,028 INFO L226 Difference]: Without dead ends: 83468 [2020-09-17 02:07:32,028 INFO L675 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 [2020-09-17 02:07:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-17 02:07:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-17 02:07:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-17 02:07:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-17 02:07:34,879 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-17 02:07:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:34,879 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-17 02:07:34,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:07:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-17 02:07:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:07:34,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:34,881 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:34,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-17 02:07:34,881 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:34,882 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-17 02:07:34,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:34,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571172483] [2020-09-17 02:07:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:07:34,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571172483] [2020-09-17 02:07:34,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:34,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:07:34,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317136404] [2020-09-17 02:07:34,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:07:34,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:34,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:07:34,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:07:34,969 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-17 02:07:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:35,867 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-17 02:07:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:35,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:07:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:36,148 INFO L225 Difference]: With dead ends: 83918 [2020-09-17 02:07:36,148 INFO L226 Difference]: Without dead ends: 83863 [2020-09-17 02:07:36,148 INFO L675 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 [2020-09-17 02:07:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-17 02:07:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-17 02:07:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-17 02:07:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-17 02:07:39,020 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-17 02:07:39,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:39,020 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-17 02:07:39,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:07:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-17 02:07:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:07:39,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:39,023 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:39,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-17 02:07:39,023 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:39,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-17 02:07:39,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:39,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329408154] [2020-09-17 02:07:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:39,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329408154] [2020-09-17 02:07:39,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531269503] [2020-09-17 02:07:39,131 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 [2020-09-17 02:07:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:39,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:07:39,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:39,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:39,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:07:39,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478732075] [2020-09-17 02:07:39,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:07:39,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:39,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:07:39,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:07:39,391 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-17 02:07:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:41,511 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-17 02:07:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:41,512 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:07:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:41,896 INFO L225 Difference]: With dead ends: 122892 [2020-09-17 02:07:41,897 INFO L226 Difference]: Without dead ends: 122862 [2020-09-17 02:07:41,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:07:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-17 02:07:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-17 02:07:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-17 02:07:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-17 02:07:45,578 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-17 02:07:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:45,578 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-17 02:07:45,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:07:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-17 02:07:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:07:45,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:45,582 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:45,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-17 02:07:45,782 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:45,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-17 02:07:45,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:45,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428969926] [2020-09-17 02:07:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:45,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428969926] [2020-09-17 02:07:45,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447883142] [2020-09-17 02:07:45,892 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 [2020-09-17 02:07:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:07:46,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:46,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:46,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:07:46,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832556685] [2020-09-17 02:07:46,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:07:46,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:46,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:07:46,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:07:46,161 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-17 02:07:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:48,798 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-17 02:07:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:48,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:07:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:49,257 INFO L225 Difference]: With dead ends: 121590 [2020-09-17 02:07:49,258 INFO L226 Difference]: Without dead ends: 121560 [2020-09-17 02:07:49,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:07:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-17 02:07:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-17 02:07:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-17 02:07:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-17 02:07:55,448 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-17 02:07:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:55,448 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-17 02:07:55,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:07:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-17 02:07:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:07:55,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:55,452 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:55,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:07:55,658 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:07:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:55,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-17 02:07:55,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:55,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877940342] [2020-09-17 02:07:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:07:55,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877940342] [2020-09-17 02:07:55,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134144504] [2020-09-17 02:07:55,769 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 [2020-09-17 02:07:55,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:07:55,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:07:55,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:07:55,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:07:56,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:56,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:07:56,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940642940] [2020-09-17 02:07:56,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:07:56,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:56,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:07:56,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:07:56,034 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-17 02:07:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:57,956 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-17 02:07:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:57,957 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:07:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:58,444 INFO L225 Difference]: With dead ends: 120395 [2020-09-17 02:07:58,444 INFO L226 Difference]: Without dead ends: 120362 [2020-09-17 02:07:58,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-17 02:08:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-17 02:08:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-17 02:08:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-17 02:08:01,994 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-17 02:08:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:01,994 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-17 02:08:01,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-17 02:08:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:01,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:01,997 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:02,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-17 02:08:02,198 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:08:02,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:02,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-17 02:08:02,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:02,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442135167] [2020-09-17 02:08:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:08:02,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442135167] [2020-09-17 02:08:02,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405799998] [2020-09-17 02:08:02,308 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 [2020-09-17 02:08:02,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:08:02,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:02,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:02,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:08:02,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:02,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:02,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746199056] [2020-09-17 02:08:02,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:02,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:02,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:02,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:02,570 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-09-17 02:08:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:05,421 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-09-17 02:08:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:05,422 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:05,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:05,848 INFO L225 Difference]: With dead ends: 119346 [2020-09-17 02:08:05,848 INFO L226 Difference]: Without dead ends: 119313 [2020-09-17 02:08:05,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-09-17 02:08:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-09-17 02:08:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-17 02:08:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-17 02:08:12,698 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-17 02:08:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:12,698 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-17 02:08:12,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-17 02:08:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:12,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:12,701 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:12,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-17 02:08:12,902 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:08:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-09-17 02:08:12,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:12,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608503187] [2020-09-17 02:08:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:13,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608503187] [2020-09-17 02:08:13,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803062036] [2020-09-17 02:08:13,015 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 [2020-09-17 02:08:13,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 02:08:13,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:13,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:13,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:13,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:13,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:13,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045419342] [2020-09-17 02:08:13,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:13,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:13,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:13,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:13,285 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-09-17 02:08:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:15,466 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-09-17 02:08:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:15,467 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:15,832 INFO L225 Difference]: With dead ends: 119770 [2020-09-17 02:08:15,832 INFO L226 Difference]: Without dead ends: 119740 [2020-09-17 02:08:15,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-09-17 02:08:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-09-17 02:08:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-09-17 02:08:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-09-17 02:08:19,097 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-09-17 02:08:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:19,097 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-09-17 02:08:19,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-09-17 02:08:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:19,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:19,100 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:19,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-17 02:08:19,300 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:08:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:19,301 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-09-17 02:08:19,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:19,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115827269] [2020-09-17 02:08:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:08:19,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115827269] [2020-09-17 02:08:19,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025996984] [2020-09-17 02:08:19,416 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 [2020-09-17 02:08:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:19,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:19,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:08:19,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:19,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:19,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619479894] [2020-09-17 02:08:19,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:19,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:19,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:19,691 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-09-17 02:08:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:21,681 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-09-17 02:08:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:21,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:22,107 INFO L225 Difference]: With dead ends: 121131 [2020-09-17 02:08:22,108 INFO L226 Difference]: Without dead ends: 121101 [2020-09-17 02:08:22,108 INFO L675 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 [2020-09-17 02:08:24,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-09-17 02:08:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-09-17 02:08:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-09-17 02:08:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-09-17 02:08:25,590 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-09-17 02:08:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:25,590 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-09-17 02:08:25,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-09-17 02:08:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:25,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:25,593 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:25,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-17 02:08:25,794 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:08:25,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-09-17 02:08:25,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:25,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528571265] [2020-09-17 02:08:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:25,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528571265] [2020-09-17 02:08:25,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717440890] [2020-09-17 02:08:25,899 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 [2020-09-17 02:08:26,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:08:26,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:26,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:26,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:26,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:26,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:26,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707406142] [2020-09-17 02:08:26,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:26,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:26,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:26,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:26,163 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-09-17 02:08:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:28,422 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-09-17 02:08:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:28,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:28,803 INFO L225 Difference]: With dead ends: 120194 [2020-09-17 02:08:28,803 INFO L226 Difference]: Without dead ends: 120154 [2020-09-17 02:08:28,803 INFO L675 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 [2020-09-17 02:08:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-09-17 02:08:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-09-17 02:08:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-09-17 02:08:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-09-17 02:08:32,170 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-09-17 02:08:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:32,170 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-09-17 02:08:32,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-09-17 02:08:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:32,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:32,173 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:32,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:08:32,374 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:08:32,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:32,375 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-09-17 02:08:32,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:32,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951522366] [2020-09-17 02:08:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:32,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951522366] [2020-09-17 02:08:32,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592159501] [2020-09-17 02:08:32,483 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 [2020-09-17 02:08:32,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:08:32,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:32,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:32,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:32,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:32,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:32,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768199113] [2020-09-17 02:08:32,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:32,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:32,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:32,744 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-09-17 02:08:34,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:34,657 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-09-17 02:08:34,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:34,658 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:35,028 INFO L225 Difference]: With dead ends: 118559 [2020-09-17 02:08:35,029 INFO L226 Difference]: Without dead ends: 118526 [2020-09-17 02:08:35,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:39,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-09-17 02:08:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-09-17 02:08:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-17 02:08:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-09-17 02:08:40,808 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-09-17 02:08:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:40,808 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-09-17 02:08:40,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-09-17 02:08:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:40,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:40,811 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:41,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-17 02:08:41,020 INFO L427 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]=== [2020-09-17 02:08:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:41,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-09-17 02:08:41,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:41,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490114592] [2020-09-17 02:08:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:41,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490114592] [2020-09-17 02:08:41,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857414590] [2020-09-17 02:08:41,133 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 [2020-09-17 02:08:41,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:08:41,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:41,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:41,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:41,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:41,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:41,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852974900] [2020-09-17 02:08:41,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:41,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:41,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:41,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:41,392 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-09-17 02:08:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:43,996 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-09-17 02:08:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:43,997 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:44,392 INFO L225 Difference]: With dead ends: 118955 [2020-09-17 02:08:44,393 INFO L226 Difference]: Without dead ends: 118925 [2020-09-17 02:08:44,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-09-17 02:08:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-09-17 02:08:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-09-17 02:08:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-09-17 02:08:50,659 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-09-17 02:08:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:50,659 INFO L479 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-09-17 02:08:50,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-09-17 02:08:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:50,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:50,662 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:50,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-09-17 02:08:50,863 INFO L427 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]=== [2020-09-17 02:08:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:50,864 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-09-17 02:08:50,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:50,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178613698] [2020-09-17 02:08:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:50,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178613698] [2020-09-17 02:08:50,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074252293] [2020-09-17 02:08:50,975 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 [2020-09-17 02:08:51,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:08:51,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:51,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:51,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:51,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:51,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:51,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877764267] [2020-09-17 02:08:51,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:51,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:51,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:51,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:51,231 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-09-17 02:08:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:53,319 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-09-17 02:08:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:53,320 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:53,697 INFO L225 Difference]: With dead ends: 117996 [2020-09-17 02:08:53,697 INFO L226 Difference]: Without dead ends: 117966 [2020-09-17 02:08:53,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-09-17 02:08:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-09-17 02:08:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-09-17 02:08:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-09-17 02:08:56,909 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-09-17 02:08:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:56,910 INFO L479 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-09-17 02:08:56,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-09-17 02:08:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:56,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:56,912 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:57,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-09-17 02:08:57,113 INFO L427 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]=== [2020-09-17 02:08:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:57,114 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-09-17 02:08:57,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:57,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658774711] [2020-09-17 02:08:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:57,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658774711] [2020-09-17 02:08:57,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254895054] [2020-09-17 02:08:57,221 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 [2020-09-17 02:08:57,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:08:57,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:57,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:57,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:57,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:57,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:57,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197336685] [2020-09-17 02:08:57,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:57,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:57,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:57,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:57,481 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-09-17 02:08:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:59,537 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-09-17 02:08:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:59,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:59,912 INFO L225 Difference]: With dead ends: 119076 [2020-09-17 02:08:59,912 INFO L226 Difference]: Without dead ends: 119036 [2020-09-17 02:08:59,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:01,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-09-17 02:09:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-09-17 02:09:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-09-17 02:09:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-09-17 02:09:03,215 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-09-17 02:09:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:03,215 INFO L479 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-09-17 02:09:03,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-09-17 02:09:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:03,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:03,218 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:03,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-09-17 02:09:03,426 INFO L427 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]=== [2020-09-17 02:09:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-09-17 02:09:03,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:03,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927598991] [2020-09-17 02:09:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:03,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927598991] [2020-09-17 02:09:03,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20300527] [2020-09-17 02:09:03,528 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 [2020-09-17 02:09:03,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:09:03,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:03,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:03,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:03,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:03,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:03,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080796248] [2020-09-17 02:09:03,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:03,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:03,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:03,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:03,794 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-09-17 02:09:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:06,065 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-09-17 02:09:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:06,066 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:06,475 INFO L225 Difference]: With dead ends: 118020 [2020-09-17 02:09:06,475 INFO L226 Difference]: Without dead ends: 117980 [2020-09-17 02:09:06,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-09-17 02:09:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-09-17 02:09:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-09-17 02:09:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-09-17 02:09:09,732 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-09-17 02:09:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:09,732 INFO L479 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-09-17 02:09:09,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-09-17 02:09:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:09,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:09,735 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:09,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:09,940 INFO L427 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]=== [2020-09-17 02:09:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-09-17 02:09:09,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:09,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871236159] [2020-09-17 02:09:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:09:10,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871236159] [2020-09-17 02:09:10,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:10,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:09:10,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529416528] [2020-09-17 02:09:10,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:09:10,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:10,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:09:10,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:09:10,051 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-09-17 02:09:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:11,960 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-09-17 02:09:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:11,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:09:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:12,413 INFO L225 Difference]: With dead ends: 118363 [2020-09-17 02:09:12,413 INFO L226 Difference]: Without dead ends: 118333 [2020-09-17 02:09:12,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:09:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-09-17 02:09:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-09-17 02:09:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-09-17 02:09:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-09-17 02:09:15,619 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-09-17 02:09:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:15,619 INFO L479 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-09-17 02:09:15,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:09:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-09-17 02:09:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:15,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:15,622 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:15,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-17 02:09:15,623 INFO L427 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]=== [2020-09-17 02:09:15,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:15,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-09-17 02:09:15,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:15,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632497118] [2020-09-17 02:09:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:09:15,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632497118] [2020-09-17 02:09:15,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:15,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:09:15,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639543101] [2020-09-17 02:09:15,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:09:15,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:15,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:09:15,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:09:15,735 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-09-17 02:09:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:17,597 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-09-17 02:09:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:17,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:09:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:17,955 INFO L225 Difference]: With dead ends: 117027 [2020-09-17 02:09:17,955 INFO L226 Difference]: Without dead ends: 116997 [2020-09-17 02:09:17,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:09:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-09-17 02:09:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-09-17 02:09:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-09-17 02:09:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-09-17 02:09:20,969 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-09-17 02:09:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:20,969 INFO L479 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-09-17 02:09:20,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:09:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-09-17 02:09:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:20,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:20,972 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:20,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-17 02:09:20,972 INFO L427 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]=== [2020-09-17 02:09:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:20,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-09-17 02:09:20,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:20,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100954464] [2020-09-17 02:09:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:09:21,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100954464] [2020-09-17 02:09:21,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:21,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:09:21,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905634360] [2020-09-17 02:09:21,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:09:21,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:21,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:09:21,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:09:21,083 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-09-17 02:09:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:23,203 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-09-17 02:09:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:23,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:09:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:23,584 INFO L225 Difference]: With dead ends: 116213 [2020-09-17 02:09:23,585 INFO L226 Difference]: Without dead ends: 116173 [2020-09-17 02:09:23,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:09:24,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-09-17 02:09:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-09-17 02:09:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-09-17 02:09:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-09-17 02:09:26,871 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-09-17 02:09:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:26,871 INFO L479 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-09-17 02:09:26,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:09:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-09-17 02:09:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:26,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:26,874 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:26,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-17 02:09:26,874 INFO L427 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]=== [2020-09-17 02:09:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:26,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-09-17 02:09:26,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:26,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638411588] [2020-09-17 02:09:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:09:26,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638411588] [2020-09-17 02:09:26,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:26,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:09:26,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425945443] [2020-09-17 02:09:26,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:09:26,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:26,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:09:26,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:09:26,982 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-09-17 02:09:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:28,854 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-09-17 02:09:28,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:28,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:09:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:29,203 INFO L225 Difference]: With dead ends: 115048 [2020-09-17 02:09:29,203 INFO L226 Difference]: Without dead ends: 115018 [2020-09-17 02:09:29,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:09:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-09-17 02:09:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-09-17 02:09:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-09-17 02:09:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-09-17 02:09:32,409 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-09-17 02:09:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:32,409 INFO L479 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-09-17 02:09:32,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:09:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-09-17 02:09:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:32,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:32,412 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:32,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-17 02:09:32,412 INFO L427 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]=== [2020-09-17 02:09:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:32,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-09-17 02:09:32,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:32,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441765370] [2020-09-17 02:09:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:09:32,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441765370] [2020-09-17 02:09:32,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:32,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:09:32,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640767212] [2020-09-17 02:09:32,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:09:32,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:09:32,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:09:32,527 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-09-17 02:09:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:34,278 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-09-17 02:09:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:34,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:09:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:34,617 INFO L225 Difference]: With dead ends: 114413 [2020-09-17 02:09:34,617 INFO L226 Difference]: Without dead ends: 114373 [2020-09-17 02:09:34,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:09:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-09-17 02:09:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-09-17 02:09:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-09-17 02:09:37,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-09-17 02:09:37,628 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-09-17 02:09:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:37,628 INFO L479 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-09-17 02:09:37,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:09:37,628 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-09-17 02:09:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:37,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:37,631 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:37,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-17 02:09:37,631 INFO L427 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]=== [2020-09-17 02:09:37,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:37,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-09-17 02:09:37,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:37,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067934793] [2020-09-17 02:09:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:09:37,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067934793] [2020-09-17 02:09:37,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:37,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:09:37,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782739801] [2020-09-17 02:09:37,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:09:37,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:37,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:09:37,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:09:37,743 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-09-17 02:09:39,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:39,875 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-09-17 02:09:39,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:39,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:09:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:40,222 INFO L225 Difference]: With dead ends: 113466 [2020-09-17 02:09:40,223 INFO L226 Difference]: Without dead ends: 113426 [2020-09-17 02:09:40,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:09:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-09-17 02:09:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-09-17 02:09:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-09-17 02:09:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-09-17 02:09:43,408 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-09-17 02:09:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:43,409 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-09-17 02:09:43,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:09:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-09-17 02:09:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:43,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:43,411 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:43,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-17 02:09:43,411 INFO L427 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]=== [2020-09-17 02:09:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:43,412 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-09-17 02:09:43,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:43,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185962672] [2020-09-17 02:09:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:09:43,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185962672] [2020-09-17 02:09:43,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:43,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:09:43,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914653493] [2020-09-17 02:09:43,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:09:43,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:43,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:09:43,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:09:43,476 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-09-17 02:09:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:43,953 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-09-17 02:09:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:09:43,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 02:09:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:44,136 INFO L225 Difference]: With dead ends: 53165 [2020-09-17 02:09:44,137 INFO L226 Difference]: Without dead ends: 53102 [2020-09-17 02:09:44,137 INFO L675 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 [2020-09-17 02:09:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-09-17 02:09:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-09-17 02:09:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-17 02:09:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-17 02:09:45,823 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-17 02:09:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:45,823 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-17 02:09:45,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:09:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-17 02:09:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:09:45,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:45,827 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] [2020-09-17 02:09:45,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-17 02:09:45,827 INFO L427 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]=== [2020-09-17 02:09:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:45,827 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-09-17 02:09:45,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:45,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242028033] [2020-09-17 02:09:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:09:45,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242028033] [2020-09-17 02:09:45,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455027978] [2020-09-17 02:09:45,972 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 [2020-09-17 02:09:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:46,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:09:46,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:09:46,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:46,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:09:46,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228140962] [2020-09-17 02:09:46,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:09:46,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:46,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:09:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:09:46,305 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-09-17 02:09:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:51,030 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-09-17 02:09:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:09:51,031 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:09:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:51,622 INFO L225 Difference]: With dead ends: 186148 [2020-09-17 02:09:51,623 INFO L226 Difference]: Without dead ends: 186130 [2020-09-17 02:09:51,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:09:54,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-09-17 02:09:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-09-17 02:09:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-09-17 02:10:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-09-17 02:10:00,020 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-09-17 02:10:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:00,020 INFO L479 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-09-17 02:10:00,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:10:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-09-17 02:10:00,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:10:00,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:00,024 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] [2020-09-17 02:10:00,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-17 02:10:00,234 INFO L427 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]=== [2020-09-17 02:10:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-09-17 02:10:00,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:00,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041863428] [2020-09-17 02:10:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:00,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041863428] [2020-09-17 02:10:00,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678088608] [2020-09-17 02:10:00,375 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 [2020-09-17 02:10:00,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:10:00,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:10:00,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:10:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:10:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:00,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:10:00,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:10:00,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694618087] [2020-09-17 02:10:00,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:10:00,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:00,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:10:00,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:10:00,667 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-09-17 02:10:05,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:05,011 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-09-17 02:10:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:10:05,011 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:10:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:06,374 INFO L225 Difference]: With dead ends: 185731 [2020-09-17 02:10:06,375 INFO L226 Difference]: Without dead ends: 185707 [2020-09-17 02:10:06,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:10:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-09-17 02:10:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-09-17 02:10:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-09-17 02:10:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-09-17 02:10:13,763 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-09-17 02:10:13,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:13,763 INFO L479 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-09-17 02:10:13,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:10:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-09-17 02:10:13,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:10:13,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:13,767 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] [2020-09-17 02:10:13,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-17 02:10:13,968 INFO L427 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]=== [2020-09-17 02:10:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:13,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-09-17 02:10:13,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:13,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221935750] [2020-09-17 02:10:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:14,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221935750] [2020-09-17 02:10:14,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453479677] [2020-09-17 02:10:14,115 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 [2020-09-17 02:10:14,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-17 02:10:14,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:10:14,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:10:14,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:10:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:14,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:10:14,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:10:14,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322477925] [2020-09-17 02:10:14,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:10:14,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:14,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:10:14,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:10:14,446 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-09-17 02:10:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:19,334 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-09-17 02:10:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:10:19,335 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:10:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:19,879 INFO L225 Difference]: With dead ends: 185071 [2020-09-17 02:10:19,879 INFO L226 Difference]: Without dead ends: 185053 [2020-09-17 02:10:19,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:10:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-09-17 02:10:27,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-09-17 02:10:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-09-17 02:10:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-09-17 02:10:27,539 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-09-17 02:10:27,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:27,539 INFO L479 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-09-17 02:10:27,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:10:27,539 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-09-17 02:10:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:10:27,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:27,543 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] [2020-09-17 02:10:27,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:10:27,744 INFO L427 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]=== [2020-09-17 02:10:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:27,745 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-09-17 02:10:27,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:27,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563864753] [2020-09-17 02:10:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:27,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563864753] [2020-09-17 02:10:27,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127759184] [2020-09-17 02:10:27,879 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 [2020-09-17 02:10:28,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:10:28,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:10:28,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:10:28,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:10:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:28,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:10:28,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:10:28,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134234098] [2020-09-17 02:10:28,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:10:28,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:28,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:10:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:10:28,214 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-09-17 02:10:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:33,029 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-09-17 02:10:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:10:33,030 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:10:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:33,627 INFO L225 Difference]: With dead ends: 184772 [2020-09-17 02:10:33,628 INFO L226 Difference]: Without dead ends: 184748 [2020-09-17 02:10:33,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:10:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-09-17 02:10:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-09-17 02:10:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-09-17 02:10:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-09-17 02:10:39,087 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-09-17 02:10:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:39,087 INFO L479 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-09-17 02:10:39,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:10:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-09-17 02:10:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:10:39,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:39,090 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] [2020-09-17 02:10:39,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:10:39,291 INFO L427 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]=== [2020-09-17 02:10:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:39,292 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-09-17 02:10:39,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:39,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765600495] [2020-09-17 02:10:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:10:39,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765600495] [2020-09-17 02:10:39,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433465342] [2020-09-17 02:10:39,432 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 [2020-09-17 02:10:39,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 02:10:39,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:10:39,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:10:39,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:10:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:10:39,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:10:39,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:10:39,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709548069] [2020-09-17 02:10:39,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:10:39,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:10:39,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:10:39,771 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-09-17 02:10:45,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:45,071 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-09-17 02:10:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:10:45,072 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:10:45,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:45,615 INFO L225 Difference]: With dead ends: 184120 [2020-09-17 02:10:45,615 INFO L226 Difference]: Without dead ends: 184102 [2020-09-17 02:10:45,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:10:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-09-17 02:10:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-09-17 02:10:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-09-17 02:10:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-09-17 02:10:50,041 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-09-17 02:10:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:50,041 INFO L479 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-09-17 02:10:50,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:10:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-09-17 02:10:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:10:50,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:50,044 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] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forcibly destroying the process [2020-09-17 02:10:50,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:10:50,571 INFO L427 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]=== [2020-09-17 02:10:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:50,572 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-09-17 02:10:50,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:50,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296517810] [2020-09-17 02:10:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:10:50,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296517810] [2020-09-17 02:10:50,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368293312] [2020-09-17 02:10:50,716 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 [2020-09-17 02:10:50,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-17 02:10:50,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:10:50,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:10:50,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:10:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:10:51,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:10:51,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:10:51,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025807309] [2020-09-17 02:10:51,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:10:51,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:51,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:10:51,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:10:51,052 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-09-17 02:10:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:55,451 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-09-17 02:10:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:10:55,452 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:10:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:59,480 INFO L225 Difference]: With dead ends: 183711 [2020-09-17 02:10:59,480 INFO L226 Difference]: Without dead ends: 183683 [2020-09-17 02:10:59,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:01,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-09-17 02:11:03,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-09-17 02:11:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-09-17 02:11:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-09-17 02:11:03,353 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-09-17 02:11:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:03,354 INFO L479 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-09-17 02:11:03,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-09-17 02:11:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:03,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:03,357 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:11:03,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-17 02:11:03,558 INFO L427 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]=== [2020-09-17 02:11:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:03,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-09-17 02:11:03,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:03,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322813111] [2020-09-17 02:11:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:11:03,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322813111] [2020-09-17 02:11:03,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258543218] [2020-09-17 02:11:03,646 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 [2020-09-17 02:11:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:03,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:11:03,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:11:03,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:03,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:11:03,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229601126] [2020-09-17 02:11:03,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:11:03,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:03,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:11:03,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:11:03,860 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-09-17 02:11:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:05,274 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-09-17 02:11:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:11:05,274 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:11:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:05,539 INFO L225 Difference]: With dead ends: 82213 [2020-09-17 02:11:05,540 INFO L226 Difference]: Without dead ends: 82165 [2020-09-17 02:11:05,540 INFO L675 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 [2020-09-17 02:11:06,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-09-17 02:11:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-09-17 02:11:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-17 02:11:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-17 02:11:08,406 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-17 02:11:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:08,406 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-17 02:11:08,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:11:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-17 02:11:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:08,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:08,410 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] [2020-09-17 02:11:08,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-17 02:11:08,611 INFO L427 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]=== [2020-09-17 02:11:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-09-17 02:11:08,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:08,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829564205] [2020-09-17 02:11:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:08,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829564205] [2020-09-17 02:11:08,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331095020] [2020-09-17 02:11:08,761 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 [2020-09-17 02:11:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:08,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:08,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:09,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:09,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:09,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970120873] [2020-09-17 02:11:09,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:09,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:09,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:09,096 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-09-17 02:11:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:16,439 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-09-17 02:11:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:16,440 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:16,978 INFO L225 Difference]: With dead ends: 183266 [2020-09-17 02:11:16,978 INFO L226 Difference]: Without dead ends: 183248 [2020-09-17 02:11:16,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-09-17 02:11:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-09-17 02:11:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-09-17 02:11:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-09-17 02:11:21,101 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-09-17 02:11:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:21,102 INFO L479 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-09-17 02:11:21,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-09-17 02:11:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:21,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:21,106 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] [2020-09-17 02:11:21,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-17 02:11:21,307 INFO L427 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]=== [2020-09-17 02:11:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:21,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-09-17 02:11:21,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:21,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434173339] [2020-09-17 02:11:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:11:21,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434173339] [2020-09-17 02:11:21,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791079922] [2020-09-17 02:11:21,457 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 [2020-09-17 02:11:21,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:11:21,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:11:21,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:21,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:11:21,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:21,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:21,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184076549] [2020-09-17 02:11:21,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:21,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:21,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:21,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:21,791 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-09-17 02:11:24,116 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-09-17 02:11:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:27,290 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-17 02:11:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:27,291 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:27,823 INFO L225 Difference]: With dead ends: 182849 [2020-09-17 02:11:27,823 INFO L226 Difference]: Without dead ends: 182825 [2020-09-17 02:11:27,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-17 02:11:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-09-17 02:11:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-09-17 02:11:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-09-17 02:11:36,022 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-09-17 02:11:36,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:36,022 INFO L479 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-09-17 02:11:36,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-09-17 02:11:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:36,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:36,027 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] [2020-09-17 02:11:36,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-17 02:11:36,228 INFO L427 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]=== [2020-09-17 02:11:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:36,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-09-17 02:11:36,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:36,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479559124] [2020-09-17 02:11:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:36,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479559124] [2020-09-17 02:11:36,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721595933] [2020-09-17 02:11:36,377 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 [2020-09-17 02:11:36,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 02:11:36,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:11:36,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:36,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:36,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:36,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:36,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039506737] [2020-09-17 02:11:36,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:36,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:36,716 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-09-17 02:11:42,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:42,179 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-09-17 02:11:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:42,180 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:42,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:42,703 INFO L225 Difference]: With dead ends: 183813 [2020-09-17 02:11:42,703 INFO L226 Difference]: Without dead ends: 183795 [2020-09-17 02:11:42,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-09-17 02:11:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-09-17 02:11:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-17 02:11:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-09-17 02:11:47,433 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-09-17 02:11:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:47,433 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-09-17 02:11:47,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-09-17 02:11:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:47,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:47,438 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] [2020-09-17 02:11:47,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-17 02:11:47,648 INFO L427 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]=== [2020-09-17 02:11:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:47,649 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-09-17 02:11:47,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:47,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397581694] [2020-09-17 02:11:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:47,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397581694] [2020-09-17 02:11:47,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431692391] [2020-09-17 02:11:47,796 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 [2020-09-17 02:11:47,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:11:47,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:11:47,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:47,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:48,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:48,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:48,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934634387] [2020-09-17 02:11:48,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:48,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:48,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:48,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:48,128 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-09-17 02:11:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:53,740 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-09-17 02:11:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:53,741 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:55,125 INFO L225 Difference]: With dead ends: 184566 [2020-09-17 02:11:55,126 INFO L226 Difference]: Without dead ends: 184542 [2020-09-17 02:11:55,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-09-17 02:11:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-09-17 02:11:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-09-17 02:11:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-09-17 02:11:59,553 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-09-17 02:11:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:59,553 INFO L479 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-09-17 02:11:59,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-09-17 02:11:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:59,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:59,558 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] [2020-09-17 02:11:59,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:59,771 INFO L427 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]=== [2020-09-17 02:11:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:59,772 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-09-17 02:11:59,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:59,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612105826] [2020-09-17 02:11:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:11:59,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612105826] [2020-09-17 02:11:59,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649553072] [2020-09-17 02:11:59,912 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 [2020-09-17 02:12:00,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 02:12:00,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:00,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:00,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:00,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:00,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:00,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896634148] [2020-09-17 02:12:00,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:00,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:00,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:00,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:00,255 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-09-17 02:12:03,465 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 15 [2020-09-17 02:12:06,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:06,656 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-09-17 02:12:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:06,657 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:07,218 INFO L225 Difference]: With dead ends: 183914 [2020-09-17 02:12:07,218 INFO L226 Difference]: Without dead ends: 183896 [2020-09-17 02:12:07,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-09-17 02:12:11,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-09-17 02:12:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-09-17 02:12:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-09-17 02:12:12,114 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-09-17 02:12:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:12,115 INFO L479 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-09-17 02:12:12,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-09-17 02:12:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:12,119 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] [2020-09-17 02:12:12,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-17 02:12:12,320 INFO L427 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]=== [2020-09-17 02:12:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-09-17 02:12:12,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:12,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915850464] [2020-09-17 02:12:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:12,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915850464] [2020-09-17 02:12:12,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406667534] [2020-09-17 02:12:12,477 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 [2020-09-17 02:12:12,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-09-17 02:12:12,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:12,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:12,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:12,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:12,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014675254] [2020-09-17 02:12:12,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:12,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:12,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:12,799 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-09-17 02:12:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:18,487 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-09-17 02:12:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:18,488 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:19,027 INFO L225 Difference]: With dead ends: 182421 [2020-09-17 02:12:19,027 INFO L226 Difference]: Without dead ends: 182393 [2020-09-17 02:12:19,027 INFO L675 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 [2020-09-17 02:12:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-09-17 02:12:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-09-17 02:12:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-09-17 02:12:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-09-17 02:12:26,585 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-09-17 02:12:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:26,585 INFO L479 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-09-17 02:12:26,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-09-17 02:12:26,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:26,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:26,589 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:12:26,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-09-17 02:12:26,790 INFO L427 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]=== [2020-09-17 02:12:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-09-17 02:12:26,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:26,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242921613] [2020-09-17 02:12:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 02:12:26,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242921613] [2020-09-17 02:12:26,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64041554] [2020-09-17 02:12:26,880 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 [2020-09-17 02:12:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:27,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:12:27,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 02:12:27,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:27,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:12:27,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722492569] [2020-09-17 02:12:27,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:12:27,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:27,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:12:27,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:12:27,097 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-09-17 02:12:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:28,142 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-09-17 02:12:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:12:28,143 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:12:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:28,457 INFO L225 Difference]: With dead ends: 86095 [2020-09-17 02:12:28,457 INFO L226 Difference]: Without dead ends: 86043 [2020-09-17 02:12:28,457 INFO L675 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 [2020-09-17 02:12:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-09-17 02:12:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-09-17 02:12:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-17 02:12:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-09-17 02:12:31,308 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-09-17 02:12:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:31,308 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-09-17 02:12:31,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:12:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-09-17 02:12:31,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:31,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:31,313 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] [2020-09-17 02:12:31,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:31,513 INFO L427 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]=== [2020-09-17 02:12:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-09-17 02:12:31,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:31,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846422709] [2020-09-17 02:12:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:12:31,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846422709] [2020-09-17 02:12:31,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825901912] [2020-09-17 02:12:31,661 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 [2020-09-17 02:12:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:31,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:31,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:12:31,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:31,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:31,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598617466] [2020-09-17 02:12:31,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:31,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:31,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:31,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:31,995 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-09-17 02:12:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:36,981 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-09-17 02:12:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:36,982 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:37,503 INFO L225 Difference]: With dead ends: 182203 [2020-09-17 02:12:37,503 INFO L226 Difference]: Without dead ends: 182185 [2020-09-17 02:12:37,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-09-17 02:12:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-09-17 02:12:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-09-17 02:12:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-09-17 02:12:46,521 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-09-17 02:12:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:46,521 INFO L479 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-09-17 02:12:46,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-09-17 02:12:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:46,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:46,527 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] [2020-09-17 02:12:46,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:46,741 INFO L427 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]=== [2020-09-17 02:12:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:46,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-09-17 02:12:46,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:46,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587418689] [2020-09-17 02:12:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:12:46,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587418689] [2020-09-17 02:12:46,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163344938] [2020-09-17 02:12:46,890 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 [2020-09-17 02:12:47,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:12:47,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:47,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:47,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:12:47,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:47,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:47,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22517612] [2020-09-17 02:12:47,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:47,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:47,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:47,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:47,230 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-09-17 02:12:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:51,724 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-09-17 02:12:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:51,725 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:53,041 INFO L225 Difference]: With dead ends: 182814 [2020-09-17 02:12:53,041 INFO L226 Difference]: Without dead ends: 182790 [2020-09-17 02:12:53,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-09-17 02:12:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-09-17 02:12:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-09-17 02:12:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-09-17 02:12:57,474 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-09-17 02:12:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:57,475 INFO L479 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-09-17 02:12:57,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-09-17 02:12:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:57,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:57,480 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] [2020-09-17 02:12:57,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:57,681 INFO L427 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]=== [2020-09-17 02:12:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:57,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-09-17 02:12:57,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:57,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324426525] [2020-09-17 02:12:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:12:57,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324426525] [2020-09-17 02:12:57,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446828077] [2020-09-17 02:12:57,837 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 [2020-09-17 02:12:57,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:12:57,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:57,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:57,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:12:58,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:58,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:58,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013662865] [2020-09-17 02:12:58,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:58,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:58,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:58,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:58,168 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-09-17 02:13:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:03,268 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-09-17 02:13:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:03,269 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:03,823 INFO L225 Difference]: With dead ends: 181233 [2020-09-17 02:13:03,823 INFO L226 Difference]: Without dead ends: 181215 [2020-09-17 02:13:03,824 INFO L675 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 [2020-09-17 02:13:05,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-09-17 02:13:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-09-17 02:13:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-09-17 02:13:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-09-17 02:13:11,382 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-09-17 02:13:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:11,382 INFO L479 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-09-17 02:13:11,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-09-17 02:13:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:11,387 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] [2020-09-17 02:13:11,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-09-17 02:13:11,588 INFO L427 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]=== [2020-09-17 02:13:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:11,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-09-17 02:13:11,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:11,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583851284] [2020-09-17 02:13:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:11,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583851284] [2020-09-17 02:13:11,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008920663] [2020-09-17 02:13:11,737 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 [2020-09-17 02:13:11,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:13:11,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:13:11,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:13:11,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:12,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:12,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:13:12,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261207418] [2020-09-17 02:13:12,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:13:12,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:12,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:13:12,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:12,084 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-09-17 02:13:17,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:17,381 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-09-17 02:13:17,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:17,382 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:17,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:17,902 INFO L225 Difference]: With dead ends: 181989 [2020-09-17 02:13:17,902 INFO L226 Difference]: Without dead ends: 181965 [2020-09-17 02:13:17,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:13:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-09-17 02:13:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-09-17 02:13:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-09-17 02:13:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-09-17 02:13:22,560 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-09-17 02:13:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:22,560 INFO L479 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-09-17 02:13:22,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-09-17 02:13:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:22,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:22,565 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] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forcibly destroying the process [2020-09-17 02:13:23,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-09-17 02:13:23,418 INFO L427 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]=== [2020-09-17 02:13:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-09-17 02:13:23,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:23,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619392482] [2020-09-17 02:13:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:23,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619392482] [2020-09-17 02:13:23,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146469191] [2020-09-17 02:13:23,569 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 [2020-09-17 02:13:23,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 02:13:23,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:13:23,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:13:23,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:23,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:23,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:13:23,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780785834] [2020-09-17 02:13:23,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:13:23,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:23,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:13:23,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:23,906 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-09-17 02:13:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:28,543 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-09-17 02:13:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:28,544 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:29,079 INFO L225 Difference]: With dead ends: 183299 [2020-09-17 02:13:29,079 INFO L226 Difference]: Without dead ends: 183281 [2020-09-17 02:13:29,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:13:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-09-17 02:13:36,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-09-17 02:13:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-09-17 02:13:36,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-09-17 02:13:36,746 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-09-17 02:13:36,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:36,747 INFO L479 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-09-17 02:13:36,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-09-17 02:13:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:36,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:36,752 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] [2020-09-17 02:13:36,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-17 02:13:36,953 INFO L427 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]=== [2020-09-17 02:13:36,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:36,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-09-17 02:13:36,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:36,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834974866] [2020-09-17 02:13:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:37,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834974866] [2020-09-17 02:13:37,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469023423] [2020-09-17 02:13:37,104 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 [2020-09-17 02:13:37,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-17 02:13:37,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:13:37,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:13:37,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:37,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:37,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:13:37,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871331706] [2020-09-17 02:13:37,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:13:37,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:37,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:13:37,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:37,451 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-09-17 02:13:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:42,170 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-09-17 02:13:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:42,171 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:43,747 INFO L225 Difference]: With dead ends: 182890 [2020-09-17 02:13:43,747 INFO L226 Difference]: Without dead ends: 182862 [2020-09-17 02:13:43,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:13:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-09-17 02:13:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-09-17 02:13:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-09-17 02:13:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-09-17 02:13:48,207 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-09-17 02:13:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:48,207 INFO L479 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-09-17 02:13:48,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-09-17 02:13:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:48,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:48,212 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:13:48,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-09-17 02:13:48,413 INFO L427 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]=== [2020-09-17 02:13:48,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:48,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-09-17 02:13:48,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:48,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179710301] [2020-09-17 02:13:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:13:48,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179710301] [2020-09-17 02:13:48,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495401548] [2020-09-17 02:13:48,507 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 [2020-09-17 02:13:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:13:48,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:13:48,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:48,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:13:48,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43430715] [2020-09-17 02:13:48,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:13:48,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:48,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:13:48,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:13:48,719 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-09-17 02:13:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:49,898 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-09-17 02:13:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:13:49,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:13:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:50,195 INFO L225 Difference]: With dead ends: 88848 [2020-09-17 02:13:50,196 INFO L226 Difference]: Without dead ends: 88788 [2020-09-17 02:13:50,196 INFO L675 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 [2020-09-17 02:13:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-09-17 02:13:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-09-17 02:13:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-09-17 02:13:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-09-17 02:13:53,135 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-09-17 02:13:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:53,135 INFO L479 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-09-17 02:13:53,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:13:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-09-17 02:13:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:53,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:53,140 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:13:53,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:53,341 INFO L427 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]=== [2020-09-17 02:13:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-09-17 02:13:53,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:53,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644627761] [2020-09-17 02:13:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:13:53,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644627761] [2020-09-17 02:13:53,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695633834] [2020-09-17 02:13:53,430 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 [2020-09-17 02:13:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:53,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:13:53,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:13:53,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:53,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:13:53,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774746601] [2020-09-17 02:13:53,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:13:53,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:53,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:13:53,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:13:53,647 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-09-17 02:13:54,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:54,734 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-09-17 02:13:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:13:54,735 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:13:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:55,044 INFO L225 Difference]: With dead ends: 92913 [2020-09-17 02:13:55,044 INFO L226 Difference]: Without dead ends: 92836 [2020-09-17 02:13:55,045 INFO L675 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 [2020-09-17 02:13:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-09-17 02:13:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-09-17 02:13:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-09-17 02:13:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-09-17 02:13:57,877 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-09-17 02:13:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:57,878 INFO L479 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-09-17 02:13:57,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:13:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-09-17 02:13:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:57,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:57,883 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] [2020-09-17 02:13:58,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-09-17 02:13:58,092 INFO L427 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]=== [2020-09-17 02:13:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-09-17 02:13:58,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:58,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505125441] [2020-09-17 02:13:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:13:58,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505125441] [2020-09-17 02:13:58,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:13:58,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:13:58,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892087283] [2020-09-17 02:13:58,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:13:58,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:58,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:13:58,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:13:58,242 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-09-17 02:14:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:02,759 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-09-17 02:14:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:02,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:14:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:03,306 INFO L225 Difference]: With dead ends: 180696 [2020-09-17 02:14:03,306 INFO L226 Difference]: Without dead ends: 180678 [2020-09-17 02:14:03,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:14:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-09-17 02:14:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-09-17 02:14:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-09-17 02:14:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-09-17 02:14:11,191 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-09-17 02:14:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:11,191 INFO L479 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-09-17 02:14:11,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:14:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-09-17 02:14:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:11,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:11,197 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] [2020-09-17 02:14:11,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-17 02:14:11,197 INFO L427 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]=== [2020-09-17 02:14:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:11,198 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-09-17 02:14:11,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:11,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253367546] [2020-09-17 02:14:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:11,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253367546] [2020-09-17 02:14:11,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:14:11,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:14:11,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066134015] [2020-09-17 02:14:11,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:14:11,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:11,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:14:11,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:14:11,350 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-09-17 02:14:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:15,906 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-09-17 02:14:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:15,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:14:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:16,434 INFO L225 Difference]: With dead ends: 180287 [2020-09-17 02:14:16,435 INFO L226 Difference]: Without dead ends: 180263 [2020-09-17 02:14:16,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:14:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-09-17 02:14:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-09-17 02:14:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-09-17 02:14:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-09-17 02:14:21,717 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-09-17 02:14:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:21,717 INFO L479 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-09-17 02:14:21,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:14:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-09-17 02:14:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:21,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:21,723 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] [2020-09-17 02:14:21,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-17 02:14:21,723 INFO L427 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]=== [2020-09-17 02:14:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-09-17 02:14:21,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:21,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380117735] [2020-09-17 02:14:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:21,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380117735] [2020-09-17 02:14:21,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:14:21,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:14:21,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71271814] [2020-09-17 02:14:21,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:14:21,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:14:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:14:21,887 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-09-17 02:14:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:27,101 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-09-17 02:14:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:27,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:14:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:27,692 INFO L225 Difference]: With dead ends: 179815 [2020-09-17 02:14:27,693 INFO L226 Difference]: Without dead ends: 179797 [2020-09-17 02:14:27,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:14:29,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-09-17 02:14:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-09-17 02:14:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-09-17 02:14:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-09-17 02:14:35,387 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-09-17 02:14:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:35,387 INFO L479 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-09-17 02:14:35,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:14:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-09-17 02:14:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:35,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:35,393 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] [2020-09-17 02:14:35,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-17 02:14:35,393 INFO L427 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]=== [2020-09-17 02:14:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-09-17 02:14:35,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:35,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005535872] [2020-09-17 02:14:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:35,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005535872] [2020-09-17 02:14:35,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:14:35,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:14:35,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070616578] [2020-09-17 02:14:35,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:14:35,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:35,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:14:35,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:14:35,553 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-09-17 02:14:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:40,432 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-09-17 02:14:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:40,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:14:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:40,953 INFO L225 Difference]: With dead ends: 179585 [2020-09-17 02:14:40,953 INFO L226 Difference]: Without dead ends: 179561 [2020-09-17 02:14:40,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:14:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-09-17 02:14:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-09-17 02:14:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-09-17 02:14:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-09-17 02:14:46,100 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-09-17 02:14:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:46,100 INFO L479 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-09-17 02:14:46,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:14:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-09-17 02:14:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:46,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:46,106 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] [2020-09-17 02:14:46,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-17 02:14:46,106 INFO L427 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]=== [2020-09-17 02:14:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:46,106 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-09-17 02:14:46,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:46,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713773700] [2020-09-17 02:14:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:46,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713773700] [2020-09-17 02:14:46,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:14:46,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:14:46,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368423350] [2020-09-17 02:14:46,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:14:46,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:46,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:14:46,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:14:46,261 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-09-17 02:14:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:50,795 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-09-17 02:14:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:50,796 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:14:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:51,338 INFO L225 Difference]: With dead ends: 179113 [2020-09-17 02:14:51,339 INFO L226 Difference]: Without dead ends: 179095 [2020-09-17 02:14:51,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:14:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-09-17 02:14:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-09-17 02:14:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-09-17 02:14:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-09-17 02:14:59,556 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-09-17 02:14:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:59,556 INFO L479 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-09-17 02:14:59,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:14:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-09-17 02:14:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:59,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:59,562 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] [2020-09-17 02:14:59,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-17 02:14:59,562 INFO L427 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]=== [2020-09-17 02:14:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-09-17 02:14:59,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:59,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330111085] [2020-09-17 02:14:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:59,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330111085] [2020-09-17 02:14:59,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:14:59,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:14:59,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382142678] [2020-09-17 02:14:59,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:14:59,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:59,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:14:59,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:14:59,717 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-09-17 02:15:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:05,009 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-09-17 02:15:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:15:05,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:15:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:05,550 INFO L225 Difference]: With dead ends: 178704 [2020-09-17 02:15:05,550 INFO L226 Difference]: Without dead ends: 178675 [2020-09-17 02:15:05,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:15:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-09-17 02:15:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-09-17 02:15:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-09-17 02:15:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-09-17 02:15:10,137 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-09-17 02:15:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:10,137 INFO L479 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-09-17 02:15:10,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:15:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-09-17 02:15:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:10,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:10,143 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:10,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-17 02:15:10,143 INFO L427 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]=== [2020-09-17 02:15:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:10,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-09-17 02:15:10,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:10,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98812612] [2020-09-17 02:15:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:10,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98812612] [2020-09-17 02:15:10,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:10,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:10,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081885589] [2020-09-17 02:15:10,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:10,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:10,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:10,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:10,236 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-09-17 02:15:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:12,122 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-09-17 02:15:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:12,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:12,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:12,465 INFO L225 Difference]: With dead ends: 90966 [2020-09-17 02:15:12,465 INFO L226 Difference]: Without dead ends: 90889 [2020-09-17 02:15:12,466 INFO L675 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 [2020-09-17 02:15:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-09-17 02:15:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-09-17 02:15:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-09-17 02:15:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-09-17 02:15:15,665 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-09-17 02:15:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:15,665 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-09-17 02:15:15,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:15:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-09-17 02:15:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:15,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:15,670 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:15,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-17 02:15:15,671 INFO L427 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]=== [2020-09-17 02:15:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-09-17 02:15:15,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:15,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9973171] [2020-09-17 02:15:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:15,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9973171] [2020-09-17 02:15:15,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:15,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:15,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703926012] [2020-09-17 02:15:15,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:15,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:15,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:15,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:15,765 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-09-17 02:15:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:16,763 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-09-17 02:15:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:16,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:17,059 INFO L225 Difference]: With dead ends: 91560 [2020-09-17 02:15:17,059 INFO L226 Difference]: Without dead ends: 91483 [2020-09-17 02:15:17,059 INFO L675 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 [2020-09-17 02:15:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-09-17 02:15:22,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-09-17 02:15:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-09-17 02:15:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-09-17 02:15:22,471 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-09-17 02:15:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:22,471 INFO L479 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-09-17 02:15:22,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:15:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-09-17 02:15:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:22,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:22,477 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:22,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-17 02:15:22,478 INFO L427 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]=== [2020-09-17 02:15:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-09-17 02:15:22,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:22,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376684329] [2020-09-17 02:15:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:22,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376684329] [2020-09-17 02:15:22,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:22,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:22,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330692221] [2020-09-17 02:15:22,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:22,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:22,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:22,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:22,570 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-09-17 02:15:23,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:23,643 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-09-17 02:15:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:23,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:23,949 INFO L225 Difference]: With dead ends: 92674 [2020-09-17 02:15:23,949 INFO L226 Difference]: Without dead ends: 92597 [2020-09-17 02:15:23,949 INFO L675 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 [2020-09-17 02:15:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-09-17 02:15:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-09-17 02:15:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-09-17 02:15:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-09-17 02:15:26,885 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-09-17 02:15:26,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:26,885 INFO L479 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-09-17 02:15:26,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:15:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-09-17 02:15:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:26,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:26,891 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:26,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-17 02:15:26,891 INFO L427 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]=== [2020-09-17 02:15:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:26,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-09-17 02:15:26,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:26,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885385917] [2020-09-17 02:15:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:26,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885385917] [2020-09-17 02:15:26,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:26,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:26,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623718759] [2020-09-17 02:15:26,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:26,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:26,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:26,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:26,990 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-09-17 02:15:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:28,093 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-09-17 02:15:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:28,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:29,351 INFO L225 Difference]: With dead ends: 93922 [2020-09-17 02:15:29,351 INFO L226 Difference]: Without dead ends: 93845 [2020-09-17 02:15:29,351 INFO L675 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 [2020-09-17 02:15:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-09-17 02:15:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-09-17 02:15:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-17 02:15:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-17 02:15:31,690 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-17 02:15:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:31,690 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-17 02:15:31,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:15:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-17 02:15:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 02:15:31,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:31,698 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:31,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-17 02:15:31,698 INFO L427 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]=== [2020-09-17 02:15:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-09-17 02:15:31,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:31,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130479382] [2020-09-17 02:15:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:15:31,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130479382] [2020-09-17 02:15:31,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484069281] [2020-09-17 02:15:31,820 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 [2020-09-17 02:15:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:15:32,512 INFO L286 TraceCheckSpWp]: Computing forward predicates...