/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 20:15:53,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:15:53,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:15:53,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:15:53,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:15:53,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:15:53,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:15:53,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:15:53,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:15:53,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:15:53,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:15:53,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:15:53,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:15:53,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:15:53,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:15:53,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:15:53,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:15:53,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:15:53,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:15:53,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:15:53,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:15:53,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:15:53,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:15:53,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:15:53,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 20:15:53,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:15:53,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:15:53,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:15:53,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:15:53,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:15:53,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:15:53,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:15:53,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:15:53,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:15:53,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:15:53,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:15:53,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-09-11 20:15:53,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:15:53,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:15:53,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:15:53,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:15:53,890 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:15:53,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:15:53,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:15:53,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:15:53,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:15:53,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:15:53,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:15:53,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:15:53,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:15:53,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:15:53,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:15:53,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:15:53,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:15:53,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:15:53,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:15:53,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:15:53,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:15:53,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:15:53,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:15:53,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:15:53,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:15:53,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:15:53,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:15:53,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:15:53,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:15:54,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:15:54,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:15:54,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:15:54,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:15:54,390 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:15:54,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-11 20:15:54,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4382720e/8797f922a0f543c6910a058ec5cdca00/FLAGfdf80f391 [2020-09-11 20:15:55,193 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:15:55,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-11 20:15:55,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4382720e/8797f922a0f543c6910a058ec5cdca00/FLAGfdf80f391 [2020-09-11 20:15:55,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4382720e/8797f922a0f543c6910a058ec5cdca00 [2020-09-11 20:15:55,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:15:55,437 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:15:55,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:15:55,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:15:55,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:15:55,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:15:55" (1/1) ... [2020-09-11 20:15:55,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594a5750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:55, skipping insertion in model container [2020-09-11 20:15:55,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:15:55" (1/1) ... [2020-09-11 20:15:55,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:15:55,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:15:56,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:15:56,095 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:15:56,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:15:56,259 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:15:56,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56 WrapperNode [2020-09-11 20:15:56,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:15:56,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:15:56,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:15:56,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:15:56,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:15:56,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:15:56,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:15:56,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:15:56,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... [2020-09-11 20:15:56,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:15:56,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:15:56,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:15:56,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:15:56,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-11 20:15:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-11 20:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 20:15:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 20:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:15:56,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:15:56,459 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:15:56,850 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:15:56,850 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-11 20:15:56,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:15:56 BoogieIcfgContainer [2020-09-11 20:15:56,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:15:56,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:15:56,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:15:56,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:15:56,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:15:55" (1/3) ... [2020-09-11 20:15:56,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd9cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:15:56, skipping insertion in model container [2020-09-11 20:15:56,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:56" (2/3) ... [2020-09-11 20:15:56,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd9cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:15:56, skipping insertion in model container [2020-09-11 20:15:56,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:15:56" (3/3) ... [2020-09-11 20:15:56,866 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-09-11 20:15:56,879 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:15:56,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:15:56,890 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 20:15:56,891 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:15:56,925 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,926 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,928 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,936 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,937 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,937 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,937 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,938 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:56,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 20:15:57,005 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:15:57,005 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:15:57,005 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:15:57,005 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:15:57,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:15:57,006 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:15:57,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:15:57,006 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:15:57,027 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-11 20:15:57,030 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-11 20:15:57,089 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-11 20:15:57,090 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 20:15:57,096 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. [2020-09-11 20:15:57,099 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-11 20:15:57,123 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-11 20:15:57,124 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 20:15:57,125 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. [2020-09-11 20:15:57,127 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-11 20:15:57,129 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:15:58,559 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-11 20:15:58,849 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-11 20:15:58,971 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-09-11 20:15:59,123 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-09-11 20:15:59,215 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-11 20:15:59,215 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-11 20:15:59,221 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-11 20:15:59,236 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-11 20:15:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-11 20:15:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 20:15:59,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:59,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 20:15:59,251 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:15:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-11 20:15:59,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:59,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705134851] [2020-09-11 20:15:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:15:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:15:59,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705134851] [2020-09-11 20:15:59,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:15:59,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:15:59,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639889812] [2020-09-11 20:15:59,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:15:59,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:15:59,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:15:59,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:15:59,601 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-11 20:15:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:15:59,648 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-11 20:15:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:15:59,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 20:15:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:15:59,666 INFO L225 Difference]: With dead ends: 35 [2020-09-11 20:15:59,666 INFO L226 Difference]: Without dead ends: 31 [2020-09-11 20:15:59,669 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 [2020-09-11 20:15:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-11 20:15:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-11 20:15:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-11 20:15:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-11 20:15:59,717 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-11 20:15:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:15:59,718 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-11 20:15:59,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:15:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-11 20:15:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 20:15:59,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:59,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:15:59,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:15:59,720 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:15:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:59,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-11 20:15:59,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:59,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766335241] [2020-09-11 20:15:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:15:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:15:59,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766335241] [2020-09-11 20:15:59,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:15:59,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:15:59,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669526418] [2020-09-11 20:15:59,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:15:59,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:15:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:15:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:15:59,868 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-11 20:15:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:15:59,892 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-11 20:15:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:15:59,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-11 20:15:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:15:59,894 INFO L225 Difference]: With dead ends: 26 [2020-09-11 20:15:59,894 INFO L226 Difference]: Without dead ends: 24 [2020-09-11 20:15:59,895 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 [2020-09-11 20:15:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-11 20:15:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-11 20:15:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-11 20:15:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-11 20:15:59,900 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-11 20:15:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:15:59,901 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-11 20:15:59,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:15:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-11 20:15:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:15:59,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:59,902 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-11 20:15:59,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:15:59,903 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:15:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:59,903 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-11 20:15:59,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:59,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528170953] [2020-09-11 20:15:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:15:59,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:15:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:15:59,950 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:15:59,980 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:15:59,980 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:15:59,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 20:15:59,981 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:15:59,982 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:15:59,982 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-11 20:15:59,992 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,992 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,992 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,993 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,993 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,993 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,993 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,994 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,994 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,996 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,996 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,996 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,996 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,997 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:59,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,001 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,001 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,001 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,003 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,003 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,004 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,004 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,004 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,007 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,007 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,007 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:00,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 20:16:00,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:16:00,016 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:16:00,016 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:16:00,016 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:16:00,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:16:00,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:16:00,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:16:00,017 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:16:00,019 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-11 20:16:00,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-11 20:16:00,040 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-11 20:16:00,040 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 20:16:00,041 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. [2020-09-11 20:16:00,043 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-11 20:16:00,061 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-11 20:16:00,061 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 20:16:00,063 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. [2020-09-11 20:16:00,065 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-11 20:16:00,065 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:01,808 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-11 20:16:01,971 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-11 20:16:01,978 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-11 20:16:01,978 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-11 20:16:01,978 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-11 20:16:01,991 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-11 20:16:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-11 20:16:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 20:16:01,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:01,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 20:16:01,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:01,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:01,993 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-11 20:16:01,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:01,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905245079] [2020-09-11 20:16:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:02,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905245079] [2020-09-11 20:16:02,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:02,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:16:02,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384014994] [2020-09-11 20:16:02,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:02,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:02,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:02,038 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-11 20:16:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:02,082 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-11 20:16:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:02,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 20:16:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:02,088 INFO L225 Difference]: With dead ends: 185 [2020-09-11 20:16:02,089 INFO L226 Difference]: Without dead ends: 171 [2020-09-11 20:16:02,089 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 [2020-09-11 20:16:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-11 20:16:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-11 20:16:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-11 20:16:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-11 20:16:02,116 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-11 20:16:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:02,117 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-11 20:16:02,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:16:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-11 20:16:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 20:16:02,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:02,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:02,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 20:16:02,119 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:02,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-11 20:16:02,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:02,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443636721] [2020-09-11 20:16:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:02,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443636721] [2020-09-11 20:16:02,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:02,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:02,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479091681] [2020-09-11 20:16:02,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:02,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:02,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:02,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:02,206 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-11 20:16:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:02,312 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-11 20:16:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:02,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 20:16:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:02,318 INFO L225 Difference]: With dead ends: 205 [2020-09-11 20:16:02,318 INFO L226 Difference]: Without dead ends: 201 [2020-09-11 20:16:02,319 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 [2020-09-11 20:16:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-11 20:16:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-11 20:16:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-11 20:16:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-11 20:16:02,342 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-11 20:16:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:02,342 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-11 20:16:02,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-11 20:16:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:16:02,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:02,344 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:02,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 20:16:02,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:02,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-11 20:16:02,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:02,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765094980] [2020-09-11 20:16:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:02,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765094980] [2020-09-11 20:16:02,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:02,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:02,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664200715] [2020-09-11 20:16:02,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:02,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:02,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:02,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:02,427 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-11 20:16:02,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:02,537 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-11 20:16:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:02,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 20:16:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:02,540 INFO L225 Difference]: With dead ends: 189 [2020-09-11 20:16:02,541 INFO L226 Difference]: Without dead ends: 185 [2020-09-11 20:16:02,541 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 [2020-09-11 20:16:02,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-11 20:16:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-11 20:16:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-11 20:16:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-11 20:16:02,558 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-11 20:16:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:02,560 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-11 20:16:02,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-11 20:16:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 20:16:02,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:02,562 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:02,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 20:16:02,563 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:02,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-11 20:16:02,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:02,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195222876] [2020-09-11 20:16:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:02,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:02,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:02,667 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:16:02,667 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:16:02,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 20:16:02,668 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:16:02,673 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:16:02,675 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-11 20:16:02,695 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,695 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,696 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,699 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,701 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,701 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,712 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,712 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,712 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,712 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,712 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,718 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,721 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,721 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:02,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-11 20:16:02,726 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:16:02,726 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:16:02,726 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:16:02,726 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:16:02,726 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:16:02,726 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:16:02,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:16:02,727 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:16:02,728 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-11 20:16:02,729 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-11 20:16:02,746 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-11 20:16:02,747 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 20:16:02,748 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. [2020-09-11 20:16:02,751 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-11 20:16:02,766 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-11 20:16:02,767 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 20:16:02,768 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. [2020-09-11 20:16:02,770 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-11 20:16:02,771 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:04,355 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-11 20:16:04,655 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-11 20:16:04,837 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-11 20:16:04,844 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-11 20:16:04,844 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-11 20:16:04,845 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-11 20:16:04,876 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-11 20:16:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-11 20:16:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 20:16:04,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:04,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 20:16:04,877 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:04,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:04,878 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-11 20:16:04,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:04,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653652841] [2020-09-11 20:16:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:04,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653652841] [2020-09-11 20:16:04,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:04,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:16:04,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379666953] [2020-09-11 20:16:04,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:04,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:04,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:04,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:04,924 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-11 20:16:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:04,961 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-11 20:16:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:04,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 20:16:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:04,969 INFO L225 Difference]: With dead ends: 600 [2020-09-11 20:16:04,969 INFO L226 Difference]: Without dead ends: 559 [2020-09-11 20:16:04,969 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 [2020-09-11 20:16:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-11 20:16:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-11 20:16:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-11 20:16:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-11 20:16:05,017 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-11 20:16:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:05,017 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-11 20:16:05,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:16:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-11 20:16:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 20:16:05,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:05,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:05,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 20:16:05,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-11 20:16:05,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:05,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011953332] [2020-09-11 20:16:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:05,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011953332] [2020-09-11 20:16:05,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:05,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:05,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128813638] [2020-09-11 20:16:05,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:05,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:05,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:05,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:05,118 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-11 20:16:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:05,251 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-11 20:16:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:05,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 20:16:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:05,259 INFO L225 Difference]: With dead ends: 817 [2020-09-11 20:16:05,259 INFO L226 Difference]: Without dead ends: 812 [2020-09-11 20:16:05,260 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 [2020-09-11 20:16:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-11 20:16:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-11 20:16:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-11 20:16:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-11 20:16:05,317 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-11 20:16:05,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:05,318 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-11 20:16:05,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-11 20:16:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:16:05,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:05,320 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:05,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 20:16:05,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:05,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-11 20:16:05,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:05,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156478050] [2020-09-11 20:16:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:05,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156478050] [2020-09-11 20:16:05,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:05,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:05,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490234733] [2020-09-11 20:16:05,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:05,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:05,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:05,394 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-11 20:16:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:05,508 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-11 20:16:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:05,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 20:16:05,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:05,516 INFO L225 Difference]: With dead ends: 843 [2020-09-11 20:16:05,517 INFO L226 Difference]: Without dead ends: 836 [2020-09-11 20:16:05,517 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 [2020-09-11 20:16:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-11 20:16:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-11 20:16:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-11 20:16:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-11 20:16:05,551 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-11 20:16:05,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:05,551 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-11 20:16:05,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-11 20:16:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:16:05,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:05,553 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:05,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 20:16:05,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-11 20:16:05,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:05,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6748180] [2020-09-11 20:16:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:05,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6748180] [2020-09-11 20:16:05,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058622571] [2020-09-11 20:16:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:05,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:05,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:05,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:05,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:05,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802774443] [2020-09-11 20:16:05,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:05,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:05,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:05,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:05,875 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-11 20:16:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:06,199 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-11 20:16:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:06,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 20:16:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:06,209 INFO L225 Difference]: With dead ends: 1059 [2020-09-11 20:16:06,209 INFO L226 Difference]: Without dead ends: 1052 [2020-09-11 20:16:06,210 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 [2020-09-11 20:16:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-11 20:16:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-11 20:16:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-11 20:16:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-11 20:16:06,244 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-11 20:16:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:06,244 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-11 20:16:06,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-11 20:16:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:16:06,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:06,246 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:06,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-11 20:16:06,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:06,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-11 20:16:06,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:06,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976605114] [2020-09-11 20:16:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:06,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976605114] [2020-09-11 20:16:06,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:06,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:06,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858618389] [2020-09-11 20:16:06,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:06,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:06,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:06,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:06,590 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-11 20:16:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:06,890 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-11 20:16:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:06,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 20:16:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:06,898 INFO L225 Difference]: With dead ends: 1053 [2020-09-11 20:16:06,898 INFO L226 Difference]: Without dead ends: 1045 [2020-09-11 20:16:06,899 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 [2020-09-11 20:16:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-11 20:16:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-11 20:16:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-11 20:16:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-11 20:16:06,929 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-11 20:16:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:06,929 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-11 20:16:06,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-11 20:16:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 20:16:06,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:06,965 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:06,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 20:16:06,965 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-11 20:16:06,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:06,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704799442] [2020-09-11 20:16:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:07,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704799442] [2020-09-11 20:16:07,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:07,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:07,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54997513] [2020-09-11 20:16:07,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:07,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:07,034 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-11 20:16:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:07,133 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-11 20:16:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:07,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 20:16:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:07,140 INFO L225 Difference]: With dead ends: 736 [2020-09-11 20:16:07,140 INFO L226 Difference]: Without dead ends: 728 [2020-09-11 20:16:07,141 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 [2020-09-11 20:16:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-11 20:16:07,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-11 20:16:07,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-11 20:16:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-11 20:16:07,162 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-11 20:16:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:07,163 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-11 20:16:07,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-11 20:16:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 20:16:07,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:07,164 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:07,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 20:16:07,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:07,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-11 20:16:07,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:07,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934938451] [2020-09-11 20:16:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:07,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:07,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:07,203 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:16:07,204 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:16:07,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-11 20:16:07,204 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:16:07,205 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:16:07,205 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-11 20:16:07,218 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,218 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,218 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,218 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,218 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,219 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,219 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,219 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,219 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,219 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,220 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,220 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,222 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,227 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,227 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,228 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,228 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,228 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,229 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,232 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,233 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,233 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,234 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,235 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,235 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,235 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,235 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,239 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,239 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,239 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,240 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,240 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,240 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,244 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,244 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,245 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,247 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,247 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,247 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:07,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-11 20:16:07,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:16:07,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:16:07,249 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:16:07,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:16:07,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:16:07,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:16:07,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:16:07,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:16:07,252 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-11 20:16:07,252 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-11 20:16:07,272 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-11 20:16:07,273 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 20:16:07,276 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. [2020-09-11 20:16:07,283 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-11 20:16:07,307 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-11 20:16:07,307 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 20:16:07,308 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. [2020-09-11 20:16:07,311 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-11 20:16:07,312 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:09,164 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-11 20:16:09,271 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-11 20:16:09,513 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-11 20:16:09,713 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-11 20:16:09,821 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-11 20:16:09,821 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-11 20:16:09,821 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-11 20:16:09,944 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-11 20:16:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-11 20:16:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 20:16:09,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:09,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 20:16:09,945 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]=== [2020-09-11 20:16:09,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:09,946 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-11 20:16:09,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:09,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524277604] [2020-09-11 20:16:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:09,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524277604] [2020-09-11 20:16:09,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:09,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:16:09,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778000092] [2020-09-11 20:16:09,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:09,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:09,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:09,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:09,978 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-11 20:16:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:10,035 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-11 20:16:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:10,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 20:16:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:10,055 INFO L225 Difference]: With dead ends: 1889 [2020-09-11 20:16:10,056 INFO L226 Difference]: Without dead ends: 1767 [2020-09-11 20:16:10,056 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 [2020-09-11 20:16:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-11 20:16:10,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-11 20:16:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-11 20:16:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-11 20:16:10,202 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-11 20:16:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:10,202 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-11 20:16:10,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:16:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-11 20:16:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 20:16:10,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:10,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:10,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-11 20:16:10,203 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]=== [2020-09-11 20:16:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-11 20:16:10,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:10,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637592280] [2020-09-11 20:16:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:10,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637592280] [2020-09-11 20:16:10,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:10,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:10,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801632202] [2020-09-11 20:16:10,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:10,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:10,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:10,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:10,270 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-11 20:16:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:10,387 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-11 20:16:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:10,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 20:16:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:10,414 INFO L225 Difference]: With dead ends: 2905 [2020-09-11 20:16:10,414 INFO L226 Difference]: Without dead ends: 2899 [2020-09-11 20:16:10,416 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 [2020-09-11 20:16:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-11 20:16:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-11 20:16:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-11 20:16:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-11 20:16:10,537 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-11 20:16:10,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:10,537 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-11 20:16:10,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:10,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-11 20:16:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:16:10,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:10,538 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:10,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-11 20:16:10,539 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]=== [2020-09-11 20:16:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-11 20:16:10,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:10,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326069095] [2020-09-11 20:16:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:10,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326069095] [2020-09-11 20:16:10,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:10,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:10,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409861914] [2020-09-11 20:16:10,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:10,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:10,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:10,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:10,613 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-11 20:16:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:10,738 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-11 20:16:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:10,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 20:16:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:10,781 INFO L225 Difference]: With dead ends: 3204 [2020-09-11 20:16:10,782 INFO L226 Difference]: Without dead ends: 3194 [2020-09-11 20:16:10,782 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 [2020-09-11 20:16:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-11 20:16:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-11 20:16:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-11 20:16:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-11 20:16:10,898 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-11 20:16:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:10,900 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-11 20:16:10,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-11 20:16:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:16:10,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:10,902 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:10,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-11 20:16:10,902 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]=== [2020-09-11 20:16:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:10,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-11 20:16:10,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:10,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713593517] [2020-09-11 20:16:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:10,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713593517] [2020-09-11 20:16:10,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312719888] [2020-09-11 20:16:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:11,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:11,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:11,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:11,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:11,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580536349] [2020-09-11 20:16:11,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:11,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:11,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:11,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:11,140 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-11 20:16:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:11,599 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-11 20:16:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:11,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 20:16:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:11,623 INFO L225 Difference]: With dead ends: 4556 [2020-09-11 20:16:11,624 INFO L226 Difference]: Without dead ends: 4546 [2020-09-11 20:16:11,624 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 [2020-09-11 20:16:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-11 20:16:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-11 20:16:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-11 20:16:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-11 20:16:11,757 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-11 20:16:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:11,758 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-11 20:16:11,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-11 20:16:11,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:16:11,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:11,759 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:11,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-11 20:16:11,976 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]=== [2020-09-11 20:16:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:11,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-11 20:16:11,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:11,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396964896] [2020-09-11 20:16:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:12,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396964896] [2020-09-11 20:16:12,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:12,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:12,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421346555] [2020-09-11 20:16:12,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:12,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:12,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:12,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:12,073 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-11 20:16:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:12,432 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-11 20:16:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:12,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 20:16:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:12,454 INFO L225 Difference]: With dead ends: 4612 [2020-09-11 20:16:12,454 INFO L226 Difference]: Without dead ends: 4601 [2020-09-11 20:16:12,455 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 [2020-09-11 20:16:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-11 20:16:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-11 20:16:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-11 20:16:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-11 20:16:12,599 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-11 20:16:12,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:12,599 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-11 20:16:12,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-11 20:16:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 20:16:12,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:12,601 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:12,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-11 20:16:12,601 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]=== [2020-09-11 20:16:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:12,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-11 20:16:12,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:12,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882472307] [2020-09-11 20:16:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:12,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882472307] [2020-09-11 20:16:12,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:12,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:12,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346319689] [2020-09-11 20:16:12,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:12,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:12,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:12,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:12,689 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-11 20:16:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:12,813 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-11 20:16:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:12,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 20:16:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:12,827 INFO L225 Difference]: With dead ends: 3265 [2020-09-11 20:16:12,827 INFO L226 Difference]: Without dead ends: 3250 [2020-09-11 20:16:12,828 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 [2020-09-11 20:16:12,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-11 20:16:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-11 20:16:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-11 20:16:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-11 20:16:12,940 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-11 20:16:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:12,940 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-11 20:16:12,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-11 20:16:12,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:12,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:12,942 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:12,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-11 20:16:12,942 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]=== [2020-09-11 20:16:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:12,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-11 20:16:12,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:12,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821438822] [2020-09-11 20:16:12,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:16:13,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821438822] [2020-09-11 20:16:13,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65112535] [2020-09-11 20:16:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:13,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:13,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:16:13,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:13,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:13,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432938648] [2020-09-11 20:16:13,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:13,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:13,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:13,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:13,252 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-11 20:16:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:13,721 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-11 20:16:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:13,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 20:16:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:13,740 INFO L225 Difference]: With dead ends: 4825 [2020-09-11 20:16:13,740 INFO L226 Difference]: Without dead ends: 4813 [2020-09-11 20:16:13,741 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 [2020-09-11 20:16:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-11 20:16:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-11 20:16:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-11 20:16:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-11 20:16:13,887 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-11 20:16:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:13,888 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-11 20:16:13,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-11 20:16:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:13,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:13,890 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:14,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:14,103 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]=== [2020-09-11 20:16:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-11 20:16:14,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:14,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484080754] [2020-09-11 20:16:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:14,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484080754] [2020-09-11 20:16:14,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278764486] [2020-09-11 20:16:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:14,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:14,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:14,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:14,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:14,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967750638] [2020-09-11 20:16:14,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:14,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:14,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:14,383 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-11 20:16:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:14,877 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-11 20:16:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:14,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 20:16:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:14,897 INFO L225 Difference]: With dead ends: 4942 [2020-09-11 20:16:14,897 INFO L226 Difference]: Without dead ends: 4925 [2020-09-11 20:16:14,898 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 [2020-09-11 20:16:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-11 20:16:15,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-11 20:16:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-11 20:16:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-11 20:16:15,134 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-11 20:16:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:15,134 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-11 20:16:15,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-11 20:16:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:15,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:15,139 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:15,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:15,346 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]=== [2020-09-11 20:16:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-11 20:16:15,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:15,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471849195] [2020-09-11 20:16:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:15,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471849195] [2020-09-11 20:16:15,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:15,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:15,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477127705] [2020-09-11 20:16:15,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:15,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:15,443 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-11 20:16:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:15,781 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-11 20:16:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:15,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 20:16:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:15,800 INFO L225 Difference]: With dead ends: 4934 [2020-09-11 20:16:15,801 INFO L226 Difference]: Without dead ends: 4917 [2020-09-11 20:16:15,801 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 [2020-09-11 20:16:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-11 20:16:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-11 20:16:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-11 20:16:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-11 20:16:15,927 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-11 20:16:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:15,927 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-11 20:16:15,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-11 20:16:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:15,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:15,930 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:15,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-11 20:16:15,930 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]=== [2020-09-11 20:16:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:15,930 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-11 20:16:15,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:15,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347982922] [2020-09-11 20:16:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:16,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347982922] [2020-09-11 20:16:16,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:16,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:16,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136047001] [2020-09-11 20:16:16,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:16,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:16,025 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-11 20:16:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:16,354 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-11 20:16:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:16,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 20:16:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:16,370 INFO L225 Difference]: With dead ends: 4774 [2020-09-11 20:16:16,371 INFO L226 Difference]: Without dead ends: 4757 [2020-09-11 20:16:16,371 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 [2020-09-11 20:16:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-11 20:16:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-11 20:16:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-11 20:16:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-11 20:16:16,489 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-11 20:16:16,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:16,489 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-11 20:16:16,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-11 20:16:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:16,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:16,492 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:16,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-11 20:16:16,492 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]=== [2020-09-11 20:16:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-11 20:16:16,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:16,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465234450] [2020-09-11 20:16:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:16,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465234450] [2020-09-11 20:16:16,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050085055] [2020-09-11 20:16:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:16,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:16,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:16,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:16,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:16,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145800298] [2020-09-11 20:16:16,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:16,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:16,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:16,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:16,795 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-11 20:16:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:17,816 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-11 20:16:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:17,817 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:17,830 INFO L225 Difference]: With dead ends: 6025 [2020-09-11 20:16:17,830 INFO L226 Difference]: Without dead ends: 6017 [2020-09-11 20:16:17,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:16:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-11 20:16:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-11 20:16:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-11 20:16:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-11 20:16:17,935 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-11 20:16:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:17,935 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-11 20:16:17,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-11 20:16:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:17,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:17,938 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:18,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-11 20:16:18,153 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]=== [2020-09-11 20:16:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:18,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-11 20:16:18,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:18,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942640988] [2020-09-11 20:16:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:16:18,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942640988] [2020-09-11 20:16:18,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542813180] [2020-09-11 20:16:18,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:18,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:16:18,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:16:18,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:18,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:16:18,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:18,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:18,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653044246] [2020-09-11 20:16:18,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:18,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:18,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:18,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:18,476 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-11 20:16:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:19,500 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-11 20:16:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:19,501 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:19,513 INFO L225 Difference]: With dead ends: 5914 [2020-09-11 20:16:19,513 INFO L226 Difference]: Without dead ends: 5903 [2020-09-11 20:16:19,514 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 [2020-09-11 20:16:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-11 20:16:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-11 20:16:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-11 20:16:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-11 20:16:19,707 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-11 20:16:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:19,707 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-11 20:16:19,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-11 20:16:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:19,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:19,711 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:19,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:19,926 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]=== [2020-09-11 20:16:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-11 20:16:19,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:19,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533922115] [2020-09-11 20:16:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:20,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533922115] [2020-09-11 20:16:20,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851571786] [2020-09-11 20:16:20,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:20,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 20:16:20,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:16:20,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:20,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:20,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:20,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:20,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123028839] [2020-09-11 20:16:20,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:20,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:20,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:20,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:20,272 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-11 20:16:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:21,233 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-11 20:16:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:21,234 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:21,247 INFO L225 Difference]: With dead ends: 5907 [2020-09-11 20:16:21,247 INFO L226 Difference]: Without dead ends: 5899 [2020-09-11 20:16:21,249 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 [2020-09-11 20:16:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-11 20:16:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-11 20:16:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-11 20:16:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-11 20:16:21,347 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-11 20:16:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:21,347 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-11 20:16:21,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-11 20:16:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:21,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:21,350 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:21,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-11 20:16:21,564 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]=== [2020-09-11 20:16:21,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:21,565 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-11 20:16:21,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:21,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953013140] [2020-09-11 20:16:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:21,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953013140] [2020-09-11 20:16:21,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776854643] [2020-09-11 20:16:21,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:21,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 20:16:21,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:16:21,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:21,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:21,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:21,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365697742] [2020-09-11 20:16:21,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:21,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:21,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:21,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:21,879 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-11 20:16:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:22,946 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-11 20:16:22,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:22,947 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:22,960 INFO L225 Difference]: With dead ends: 5835 [2020-09-11 20:16:22,960 INFO L226 Difference]: Without dead ends: 5824 [2020-09-11 20:16:22,961 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 [2020-09-11 20:16:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-11 20:16:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-11 20:16:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-11 20:16:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-11 20:16:23,040 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-11 20:16:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:23,040 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-11 20:16:23,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-11 20:16:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:23,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:23,043 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:23,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-11 20:16:23,258 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]=== [2020-09-11 20:16:23,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:23,258 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-11 20:16:23,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:23,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101731761] [2020-09-11 20:16:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:23,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101731761] [2020-09-11 20:16:23,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:23,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:16:23,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180721805] [2020-09-11 20:16:23,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:16:23,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:16:23,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:16:23,381 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-11 20:16:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:24,250 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-11 20:16:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:24,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 20:16:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:24,263 INFO L225 Difference]: With dead ends: 5820 [2020-09-11 20:16:24,263 INFO L226 Difference]: Without dead ends: 5812 [2020-09-11 20:16:24,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 20:16:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-11 20:16:24,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-11 20:16:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-11 20:16:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-11 20:16:24,339 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-11 20:16:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:24,339 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-11 20:16:24,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:16:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-11 20:16:24,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:24,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:24,342 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:24,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-11 20:16:24,342 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]=== [2020-09-11 20:16:24,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-11 20:16:24,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:24,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028150911] [2020-09-11 20:16:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:24,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028150911] [2020-09-11 20:16:24,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:24,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:16:24,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532086907] [2020-09-11 20:16:24,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:16:24,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:24,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:16:24,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:16:24,465 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-11 20:16:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:25,319 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-11 20:16:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:25,320 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 20:16:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:25,330 INFO L225 Difference]: With dead ends: 5717 [2020-09-11 20:16:25,330 INFO L226 Difference]: Without dead ends: 5705 [2020-09-11 20:16:25,401 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 [2020-09-11 20:16:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-11 20:16:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-11 20:16:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-11 20:16:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-11 20:16:25,474 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-11 20:16:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:25,474 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-11 20:16:25,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:16:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-11 20:16:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:25,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:25,476 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:25,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-11 20:16:25,476 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]=== [2020-09-11 20:16:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:25,476 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-11 20:16:25,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:25,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555383604] [2020-09-11 20:16:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:16:25,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555383604] [2020-09-11 20:16:25,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:25,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:25,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122855415] [2020-09-11 20:16:25,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:25,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:25,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:25,557 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-11 20:16:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:25,665 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-11 20:16:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:25,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 20:16:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:25,674 INFO L225 Difference]: With dead ends: 2762 [2020-09-11 20:16:25,674 INFO L226 Difference]: Without dead ends: 2746 [2020-09-11 20:16:25,674 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 [2020-09-11 20:16:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-11 20:16:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-11 20:16:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-11 20:16:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-11 20:16:25,741 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-11 20:16:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:25,741 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-11 20:16:25,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-11 20:16:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-11 20:16:25,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:25,744 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:25,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-11 20:16:25,745 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]=== [2020-09-11 20:16:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-11 20:16:25,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:25,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759196522] [2020-09-11 20:16:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:25,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:25,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:25,783 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:16:25,783 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:16:25,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-11 20:16:25,784 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:16:25,784 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:16:25,785 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-11 20:16:25,798 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,799 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,800 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,800 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,803 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,803 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,803 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,803 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,803 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,804 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,806 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,806 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,806 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,813 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,819 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,820 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,820 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,826 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,826 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:25,837 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-11 20:16:25,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:16:25,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:16:25,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:16:25,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:16:25,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:16:25,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:16:25,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:16:25,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:16:25,840 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-11 20:16:25,840 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-11 20:16:25,856 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-11 20:16:25,856 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 20:16:25,857 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. [2020-09-11 20:16:25,861 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-11 20:16:25,877 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-11 20:16:25,877 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 20:16:25,879 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. [2020-09-11 20:16:25,883 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-11 20:16:25,883 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:28,034 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-09-11 20:16:28,337 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-11 20:16:28,441 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-11 20:16:28,441 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-11 20:16:28,442 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-11 20:16:28,820 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-11 20:16:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-11 20:16:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 20:16:28,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:28,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 20:16:28,821 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]=== [2020-09-11 20:16:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-11 20:16:28,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:28,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747829940] [2020-09-11 20:16:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:28,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747829940] [2020-09-11 20:16:28,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:28,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:16:28,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189779492] [2020-09-11 20:16:28,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:28,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:28,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:28,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:28,847 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-11 20:16:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:28,933 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-11 20:16:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:28,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 20:16:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:28,955 INFO L225 Difference]: With dead ends: 5844 [2020-09-11 20:16:28,955 INFO L226 Difference]: Without dead ends: 5479 [2020-09-11 20:16:28,957 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 [2020-09-11 20:16:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-11 20:16:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-11 20:16:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-11 20:16:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-11 20:16:29,123 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-11 20:16:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:29,123 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-11 20:16:29,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:16:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-11 20:16:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 20:16:29,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:29,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:29,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-11 20:16:29,124 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]=== [2020-09-11 20:16:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-11 20:16:29,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:29,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247204979] [2020-09-11 20:16:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:29,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247204979] [2020-09-11 20:16:29,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:29,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:29,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69928685] [2020-09-11 20:16:29,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:29,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:29,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:29,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:29,173 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-11 20:16:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:29,335 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-11 20:16:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:29,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 20:16:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:29,362 INFO L225 Difference]: With dead ends: 9673 [2020-09-11 20:16:29,362 INFO L226 Difference]: Without dead ends: 9666 [2020-09-11 20:16:29,362 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 [2020-09-11 20:16:29,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-11 20:16:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-11 20:16:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-11 20:16:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-11 20:16:29,601 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-11 20:16:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:29,601 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-11 20:16:29,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-11 20:16:29,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:16:29,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:29,601 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:29,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-11 20:16:29,602 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]=== [2020-09-11 20:16:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-11 20:16:29,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:29,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431951173] [2020-09-11 20:16:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:29,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431951173] [2020-09-11 20:16:29,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:29,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:29,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264479556] [2020-09-11 20:16:29,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:29,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:29,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:29,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:29,668 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-11 20:16:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:29,991 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-11 20:16:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:29,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 20:16:29,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:30,021 INFO L225 Difference]: With dead ends: 11081 [2020-09-11 20:16:30,021 INFO L226 Difference]: Without dead ends: 11068 [2020-09-11 20:16:30,021 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 [2020-09-11 20:16:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-11 20:16:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-11 20:16:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-11 20:16:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-11 20:16:30,266 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-11 20:16:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:30,266 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-11 20:16:30,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-11 20:16:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:16:30,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:30,267 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:30,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-11 20:16:30,267 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]=== [2020-09-11 20:16:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:30,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-11 20:16:30,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:30,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902480985] [2020-09-11 20:16:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:30,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902480985] [2020-09-11 20:16:30,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591580012] [2020-09-11 20:16:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:30,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:30,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:30,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:30,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:30,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682979296] [2020-09-11 20:16:30,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:30,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:30,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:30,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:30,507 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-11 20:16:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:30,973 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-11 20:16:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:30,974 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 20:16:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:31,018 INFO L225 Difference]: With dead ends: 16749 [2020-09-11 20:16:31,018 INFO L226 Difference]: Without dead ends: 16736 [2020-09-11 20:16:31,019 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 [2020-09-11 20:16:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-11 20:16:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-11 20:16:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-11 20:16:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-11 20:16:32,235 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-11 20:16:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:32,235 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-11 20:16:32,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-11 20:16:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:16:32,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:32,236 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:32,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:32,443 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]=== [2020-09-11 20:16:32,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:32,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-11 20:16:32,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:32,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090015966] [2020-09-11 20:16:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:32,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090015966] [2020-09-11 20:16:32,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:32,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:32,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869512253] [2020-09-11 20:16:32,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:32,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:32,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:32,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:32,520 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-11 20:16:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:33,070 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-11 20:16:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:33,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 20:16:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:33,141 INFO L225 Difference]: With dead ends: 17085 [2020-09-11 20:16:33,141 INFO L226 Difference]: Without dead ends: 17071 [2020-09-11 20:16:33,142 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 [2020-09-11 20:16:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-11 20:16:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-11 20:16:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-11 20:16:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-11 20:16:33,547 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-11 20:16:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:33,547 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-11 20:16:33,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-11 20:16:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 20:16:33,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:33,548 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:33,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-11 20:16:33,548 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]=== [2020-09-11 20:16:33,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:33,549 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-11 20:16:33,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:33,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544008179] [2020-09-11 20:16:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:33,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544008179] [2020-09-11 20:16:33,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:33,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:33,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784575883] [2020-09-11 20:16:33,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:33,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:33,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:33,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:33,614 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-11 20:16:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:33,860 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-11 20:16:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:33,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 20:16:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:33,920 INFO L225 Difference]: With dead ends: 12234 [2020-09-11 20:16:33,920 INFO L226 Difference]: Without dead ends: 12212 [2020-09-11 20:16:33,922 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 [2020-09-11 20:16:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-11 20:16:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-11 20:16:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-11 20:16:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-11 20:16:34,367 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-11 20:16:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:34,367 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-11 20:16:34,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-11 20:16:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:34,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:34,369 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:34,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-11 20:16:34,370 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]=== [2020-09-11 20:16:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:34,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-11 20:16:34,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:34,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351686758] [2020-09-11 20:16:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 20:16:34,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351686758] [2020-09-11 20:16:34,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043819357] [2020-09-11 20:16:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:34,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:34,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 20:16:34,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:34,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:34,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350107751] [2020-09-11 20:16:34,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:34,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:34,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:34,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:34,802 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-11 20:16:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:35,251 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-11 20:16:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:35,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 20:16:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:35,303 INFO L225 Difference]: With dead ends: 19016 [2020-09-11 20:16:35,304 INFO L226 Difference]: Without dead ends: 18998 [2020-09-11 20:16:35,304 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 [2020-09-11 20:16:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-11 20:16:35,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-11 20:16:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-11 20:16:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-11 20:16:35,647 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-11 20:16:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:35,647 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-11 20:16:35,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-11 20:16:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:35,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:35,648 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:35,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-11 20:16:35,849 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]=== [2020-09-11 20:16:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:35,850 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-11 20:16:35,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:35,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114090032] [2020-09-11 20:16:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:35,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114090032] [2020-09-11 20:16:35,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704129312] [2020-09-11 20:16:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:36,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:36,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:36,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:36,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:36,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161870851] [2020-09-11 20:16:36,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:36,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:36,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:36,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:36,128 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-11 20:16:36,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:36,708 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-11 20:16:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:36,708 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 20:16:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:36,803 INFO L225 Difference]: With dead ends: 19670 [2020-09-11 20:16:36,803 INFO L226 Difference]: Without dead ends: 19645 [2020-09-11 20:16:36,804 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 [2020-09-11 20:16:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-11 20:16:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-11 20:16:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-11 20:16:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-11 20:16:37,546 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-11 20:16:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:37,547 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-11 20:16:37,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-11 20:16:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:37,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:37,548 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:37,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-11 20:16:37,749 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]=== [2020-09-11 20:16:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-11 20:16:37,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:37,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306816989] [2020-09-11 20:16:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:37,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306816989] [2020-09-11 20:16:37,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:37,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:37,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711052565] [2020-09-11 20:16:37,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:37,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:37,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:37,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:37,824 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-11 20:16:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:38,391 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-11 20:16:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:38,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 20:16:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:38,479 INFO L225 Difference]: With dead ends: 19852 [2020-09-11 20:16:38,479 INFO L226 Difference]: Without dead ends: 19827 [2020-09-11 20:16:38,483 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 [2020-09-11 20:16:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-11 20:16:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-11 20:16:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-11 20:16:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-11 20:16:39,097 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-11 20:16:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:39,097 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-11 20:16:39,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-11 20:16:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:39,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:39,099 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:39,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-11 20:16:39,099 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]=== [2020-09-11 20:16:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:39,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-11 20:16:39,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:39,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287451642] [2020-09-11 20:16:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:39,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287451642] [2020-09-11 20:16:39,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:39,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:39,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915313986] [2020-09-11 20:16:39,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:39,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:39,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:39,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:39,186 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-11 20:16:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:39,584 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-11 20:16:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:39,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 20:16:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:39,654 INFO L225 Difference]: With dead ends: 19555 [2020-09-11 20:16:39,654 INFO L226 Difference]: Without dead ends: 19530 [2020-09-11 20:16:39,655 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 [2020-09-11 20:16:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-11 20:16:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-11 20:16:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-11 20:16:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-11 20:16:40,182 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-11 20:16:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:40,182 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-11 20:16:40,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-11 20:16:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:40,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:40,184 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:40,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-11 20:16:40,184 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]=== [2020-09-11 20:16:40,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:40,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-11 20:16:40,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:40,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414904831] [2020-09-11 20:16:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:40,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414904831] [2020-09-11 20:16:40,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090936840] [2020-09-11 20:16:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:40,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:40,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:40,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:40,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:40,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100180803] [2020-09-11 20:16:40,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:40,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:40,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:40,532 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-11 20:16:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:41,773 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-11 20:16:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:41,774 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:41,847 INFO L225 Difference]: With dead ends: 26969 [2020-09-11 20:16:41,847 INFO L226 Difference]: Without dead ends: 26957 [2020-09-11 20:16:41,848 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 [2020-09-11 20:16:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-11 20:16:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-11 20:16:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-11 20:16:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-11 20:16:42,287 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-11 20:16:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:42,287 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-11 20:16:42,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-11 20:16:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:42,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:42,289 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:42,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:42,490 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]=== [2020-09-11 20:16:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:42,490 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-11 20:16:42,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:42,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591166094] [2020-09-11 20:16:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 20:16:42,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591166094] [2020-09-11 20:16:42,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424726888] [2020-09-11 20:16:42,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:42,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:16:42,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:16:42,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:42,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 20:16:42,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:42,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:42,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11631907] [2020-09-11 20:16:42,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:42,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:42,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:42,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:42,808 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-11 20:16:43,000 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-09-11 20:16:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:44,085 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-11 20:16:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:44,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:44,155 INFO L225 Difference]: With dead ends: 26661 [2020-09-11 20:16:44,156 INFO L226 Difference]: Without dead ends: 26645 [2020-09-11 20:16:44,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:16:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-11 20:16:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-11 20:16:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-11 20:16:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-11 20:16:44,601 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-11 20:16:44,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:44,602 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-11 20:16:44,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-11 20:16:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:44,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:44,603 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:44,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-11 20:16:44,804 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]=== [2020-09-11 20:16:44,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:44,805 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-11 20:16:44,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:44,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163206607] [2020-09-11 20:16:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:44,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163206607] [2020-09-11 20:16:44,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965686150] [2020-09-11 20:16:44,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:44,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 20:16:44,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:16:44,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:45,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:45,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:45,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:45,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097973261] [2020-09-11 20:16:45,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:45,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:45,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:45,179 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-11 20:16:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:46,400 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-11 20:16:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:46,400 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:46,482 INFO L225 Difference]: With dead ends: 26686 [2020-09-11 20:16:46,482 INFO L226 Difference]: Without dead ends: 26674 [2020-09-11 20:16:46,483 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 [2020-09-11 20:16:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-11 20:16:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-11 20:16:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-11 20:16:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-11 20:16:47,076 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-11 20:16:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:47,076 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-11 20:16:47,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-11 20:16:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:47,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:47,078 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:47,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:47,279 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]=== [2020-09-11 20:16:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:47,279 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-11 20:16:47,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:47,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673004889] [2020-09-11 20:16:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:47,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673004889] [2020-09-11 20:16:47,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779772476] [2020-09-11 20:16:47,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:47,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 20:16:47,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:16:47,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:16:47,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:47,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:47,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:16:47,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240901865] [2020-09-11 20:16:47,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:16:47,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:47,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:16:47,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:16:47,618 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-11 20:16:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:48,868 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-11 20:16:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:48,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:16:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:48,950 INFO L225 Difference]: With dead ends: 26489 [2020-09-11 20:16:48,950 INFO L226 Difference]: Without dead ends: 26473 [2020-09-11 20:16:48,950 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 [2020-09-11 20:16:49,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-11 20:16:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-11 20:16:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-11 20:16:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-11 20:16:49,368 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-11 20:16:49,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:49,368 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-11 20:16:49,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:16:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-11 20:16:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:49,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:49,370 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:49,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-11 20:16:49,576 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]=== [2020-09-11 20:16:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-11 20:16:49,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:49,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503074081] [2020-09-11 20:16:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:16:49,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503074081] [2020-09-11 20:16:49,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:49,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:49,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646095871] [2020-09-11 20:16:49,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:16:49,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:16:49,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:16:49,656 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-11 20:16:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:49,839 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-11 20:16:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:16:49,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 20:16:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:49,874 INFO L225 Difference]: With dead ends: 13251 [2020-09-11 20:16:49,874 INFO L226 Difference]: Without dead ends: 13220 [2020-09-11 20:16:49,874 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 [2020-09-11 20:16:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-11 20:16:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-11 20:16:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-11 20:16:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-11 20:16:50,348 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-11 20:16:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:50,348 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-11 20:16:50,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:16:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-11 20:16:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:50,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:50,350 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:50,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-11 20:16:50,350 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]=== [2020-09-11 20:16:50,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:50,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-11 20:16:50,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:50,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565115448] [2020-09-11 20:16:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:50,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565115448] [2020-09-11 20:16:50,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:50,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:16:50,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525065237] [2020-09-11 20:16:50,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:16:50,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:16:50,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:16:50,452 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-11 20:16:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:51,512 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-11 20:16:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:51,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 20:16:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:51,595 INFO L225 Difference]: With dead ends: 29788 [2020-09-11 20:16:51,595 INFO L226 Difference]: Without dead ends: 29770 [2020-09-11 20:16:51,596 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 [2020-09-11 20:16:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-11 20:16:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-11 20:16:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-11 20:16:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-11 20:16:52,081 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-11 20:16:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:52,082 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-11 20:16:52,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:16:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-11 20:16:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:16:52,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:52,083 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:52,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-11 20:16:52,083 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]=== [2020-09-11 20:16:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:52,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-11 20:16:52,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:52,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401032480] [2020-09-11 20:16:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:16:52,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401032480] [2020-09-11 20:16:52,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:52,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:16:52,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568718475] [2020-09-11 20:16:52,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:16:52,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:52,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:16:52,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:16:52,188 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-11 20:16:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:53,264 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-11 20:16:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:16:53,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 20:16:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:53,345 INFO L225 Difference]: With dead ends: 29379 [2020-09-11 20:16:53,345 INFO L226 Difference]: Without dead ends: 29356 [2020-09-11 20:16:53,346 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 [2020-09-11 20:16:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-11 20:16:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-11 20:16:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-11 20:16:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-11 20:16:54,136 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-11 20:16:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:54,136 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-11 20:16:54,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:16:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-11 20:16:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:16:54,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:54,139 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:54,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-11 20:16:54,139 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]=== [2020-09-11 20:16:54,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:54,140 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-11 20:16:54,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:54,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398815709] [2020-09-11 20:16:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:16:54,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398815709] [2020-09-11 20:16:54,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78029064] [2020-09-11 20:16:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:54,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:54,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:16:54,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:54,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:54,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708125530] [2020-09-11 20:16:54,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:54,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:54,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:54,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:54,412 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-11 20:16:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:54,937 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-11 20:16:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:54,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 20:16:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:54,990 INFO L225 Difference]: With dead ends: 19727 [2020-09-11 20:16:54,990 INFO L226 Difference]: Without dead ends: 19703 [2020-09-11 20:16:54,991 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 [2020-09-11 20:16:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-11 20:16:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-11 20:16:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-11 20:16:55,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-11 20:16:55,352 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-11 20:16:55,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:55,353 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-11 20:16:55,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-11 20:16:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:16:55,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:55,355 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:55,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-11 20:16:55,556 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]=== [2020-09-11 20:16:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-11 20:16:55,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:55,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586589286] [2020-09-11 20:16:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:16:55,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586589286] [2020-09-11 20:16:55,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150146947] [2020-09-11 20:16:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:55,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:55,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:16:55,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:55,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:55,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377902923] [2020-09-11 20:16:55,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:55,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:55,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:55,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:55,837 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-11 20:16:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:56,315 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-11 20:16:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:56,316 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 20:16:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:56,376 INFO L225 Difference]: With dead ends: 20694 [2020-09-11 20:16:56,377 INFO L226 Difference]: Without dead ends: 20666 [2020-09-11 20:16:56,377 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 [2020-09-11 20:16:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-11 20:16:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-11 20:16:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-11 20:16:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-11 20:16:56,752 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-11 20:16:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:56,752 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-11 20:16:56,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-11 20:16:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:16:56,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:56,756 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:56,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:56,969 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]=== [2020-09-11 20:16:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:56,970 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-11 20:16:56,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:56,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235579985] [2020-09-11 20:16:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:16:57,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235579985] [2020-09-11 20:16:57,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143099586] [2020-09-11 20:16:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:57,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:16:57,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:16:57,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:57,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:16:57,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878294769] [2020-09-11 20:16:57,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:16:57,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:57,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:16:57,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:16:57,238 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-11 20:16:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:57,772 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-11 20:16:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:57,773 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 20:16:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:57,834 INFO L225 Difference]: With dead ends: 21396 [2020-09-11 20:16:57,834 INFO L226 Difference]: Without dead ends: 21359 [2020-09-11 20:16:57,834 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 [2020-09-11 20:16:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-11 20:16:58,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-11 20:16:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-11 20:16:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-11 20:16:58,363 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-11 20:16:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:58,364 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-11 20:16:58,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:16:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-11 20:16:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:16:58,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:58,366 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:58,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-11 20:16:58,567 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]=== [2020-09-11 20:16:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:58,567 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-11 20:16:58,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:58,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057138141] [2020-09-11 20:16:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:16:58,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057138141] [2020-09-11 20:16:58,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:58,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:58,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132907891] [2020-09-11 20:16:58,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:58,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:58,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:58,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:58,653 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-11 20:16:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:59,136 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-11 20:16:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:16:59,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 20:16:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:59,198 INFO L225 Difference]: With dead ends: 21489 [2020-09-11 20:16:59,198 INFO L226 Difference]: Without dead ends: 21452 [2020-09-11 20:16:59,198 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 [2020-09-11 20:16:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-11 20:16:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-11 20:16:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-11 20:16:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-11 20:16:59,607 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-11 20:16:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:59,608 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-11 20:16:59,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:16:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-11 20:16:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:16:59,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:59,611 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:59,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-11 20:16:59,612 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]=== [2020-09-11 20:16:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-11 20:16:59,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:59,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378309738] [2020-09-11 20:16:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:16:59,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378309738] [2020-09-11 20:16:59,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:59,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:16:59,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839823163] [2020-09-11 20:16:59,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:16:59,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:59,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:16:59,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:16:59,695 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-11 20:17:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:00,179 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-11 20:17:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:17:00,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 20:17:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:00,241 INFO L225 Difference]: With dead ends: 21198 [2020-09-11 20:17:00,241 INFO L226 Difference]: Without dead ends: 21161 [2020-09-11 20:17:00,241 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 [2020-09-11 20:17:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-11 20:17:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-11 20:17:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-11 20:17:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-11 20:17:00,641 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-11 20:17:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:00,641 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-11 20:17:00,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:17:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-11 20:17:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:17:00,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:00,644 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:00,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-11 20:17:00,644 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]=== [2020-09-11 20:17:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:00,645 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-11 20:17:00,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:00,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341682051] [2020-09-11 20:17:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:17:00,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341682051] [2020-09-11 20:17:00,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:00,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:17:00,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60995774] [2020-09-11 20:17:00,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:17:00,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:17:00,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:17:00,731 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-11 20:17:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:01,211 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-11 20:17:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:17:01,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 20:17:01,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:01,273 INFO L225 Difference]: With dead ends: 21067 [2020-09-11 20:17:01,273 INFO L226 Difference]: Without dead ends: 21030 [2020-09-11 20:17:01,274 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 [2020-09-11 20:17:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-11 20:17:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-11 20:17:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-11 20:17:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-11 20:17:01,873 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-11 20:17:01,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:01,873 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-11 20:17:01,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:17:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-11 20:17:01,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:01,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:01,878 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:01,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-11 20:17:01,878 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]=== [2020-09-11 20:17:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:01,879 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-11 20:17:01,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:01,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576275906] [2020-09-11 20:17:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:17:01,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576275906] [2020-09-11 20:17:01,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19444856] [2020-09-11 20:17:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:02,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:02,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:17:02,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:02,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:02,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011028984] [2020-09-11 20:17:02,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:02,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:02,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:02,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:02,202 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-11 20:17:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:03,569 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-11 20:17:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:03,570 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:03,634 INFO L225 Difference]: With dead ends: 30145 [2020-09-11 20:17:03,634 INFO L226 Difference]: Without dead ends: 30125 [2020-09-11 20:17:03,635 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 [2020-09-11 20:17:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-11 20:17:04,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-11 20:17:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-11 20:17:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-11 20:17:04,070 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-11 20:17:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:04,071 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-11 20:17:04,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-11 20:17:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:04,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:04,074 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:04,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-11 20:17:04,275 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]=== [2020-09-11 20:17:04,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:04,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-11 20:17:04,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:04,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146312718] [2020-09-11 20:17:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:17:04,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146312718] [2020-09-11 20:17:04,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177452025] [2020-09-11 20:17:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:04,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:04,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:17:04,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:04,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:04,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424271009] [2020-09-11 20:17:04,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:04,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:04,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:04,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:04,585 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-11 20:17:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:05,783 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-11 20:17:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:05,784 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:05,856 INFO L225 Difference]: With dead ends: 29696 [2020-09-11 20:17:05,856 INFO L226 Difference]: Without dead ends: 29676 [2020-09-11 20:17:05,856 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 [2020-09-11 20:17:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-11 20:17:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-11 20:17:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-11 20:17:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-11 20:17:06,307 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-11 20:17:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:06,308 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-11 20:17:06,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-11 20:17:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:06,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:06,311 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:06,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-11 20:17:06,512 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]=== [2020-09-11 20:17:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-11 20:17:06,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:06,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018857536] [2020-09-11 20:17:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:06,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018857536] [2020-09-11 20:17:06,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038955494] [2020-09-11 20:17:06,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:06,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:17:06,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:06,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:06,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:07,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:07,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:07,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348446544] [2020-09-11 20:17:07,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:07,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:07,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:07,020 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-11 20:17:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:08,234 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-11 20:17:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:08,235 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:08,315 INFO L225 Difference]: With dead ends: 29267 [2020-09-11 20:17:08,315 INFO L226 Difference]: Without dead ends: 29245 [2020-09-11 20:17:08,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:17:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-11 20:17:08,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-11 20:17:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-11 20:17:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-11 20:17:08,755 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-11 20:17:08,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:08,755 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-11 20:17:08,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-11 20:17:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:08,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:08,759 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:08,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-11 20:17:08,959 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]=== [2020-09-11 20:17:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:08,960 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-11 20:17:08,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:08,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21296746] [2020-09-11 20:17:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:09,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21296746] [2020-09-11 20:17:09,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806330945] [2020-09-11 20:17:09,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:09,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:17:09,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:09,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:09,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:09,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:09,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:09,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931378134] [2020-09-11 20:17:09,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:09,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:09,296 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-11 20:17:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:10,730 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-11 20:17:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:10,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:10,801 INFO L225 Difference]: With dead ends: 28920 [2020-09-11 20:17:10,801 INFO L226 Difference]: Without dead ends: 28898 [2020-09-11 20:17:10,802 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 [2020-09-11 20:17:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-11 20:17:11,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-11 20:17:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-11 20:17:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-11 20:17:11,247 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-11 20:17:11,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:11,248 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-11 20:17:11,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:11,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-11 20:17:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:11,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:11,251 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:11,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:11,452 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]=== [2020-09-11 20:17:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:11,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-11 20:17:11,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:11,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160351614] [2020-09-11 20:17:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-11 20:17:11,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160351614] [2020-09-11 20:17:11,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612929] [2020-09-11 20:17:11,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:11,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-11 20:17:11,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:11,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:11,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-11 20:17:11,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:11,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:11,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316596384] [2020-09-11 20:17:11,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:11,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:11,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:11,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:11,796 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-11 20:17:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:13,069 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-11 20:17:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:13,070 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:13,136 INFO L225 Difference]: With dead ends: 29038 [2020-09-11 20:17:13,137 INFO L226 Difference]: Without dead ends: 29018 [2020-09-11 20:17:13,137 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 [2020-09-11 20:17:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-11 20:17:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-11 20:17:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-11 20:17:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-11 20:17:13,564 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-11 20:17:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:13,564 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-11 20:17:13,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:13,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-11 20:17:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:13,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:13,568 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:13,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-11 20:17:13,768 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]=== [2020-09-11 20:17:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-11 20:17:13,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:13,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140367022] [2020-09-11 20:17:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 20:17:13,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140367022] [2020-09-11 20:17:13,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763336407] [2020-09-11 20:17:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:17:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:13,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:13,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 20:17:14,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:14,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:14,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576572997] [2020-09-11 20:17:14,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:14,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:14,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:14,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:14,107 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-11 20:17:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:15,455 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-11 20:17:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:15,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:15,536 INFO L225 Difference]: With dead ends: 29417 [2020-09-11 20:17:15,537 INFO L226 Difference]: Without dead ends: 29397 [2020-09-11 20:17:15,537 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 [2020-09-11 20:17:15,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-11 20:17:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-11 20:17:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-11 20:17:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-11 20:17:15,992 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-11 20:17:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:15,993 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-11 20:17:15,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-11 20:17:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:15,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:15,996 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:16,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:16,197 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]=== [2020-09-11 20:17:16,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:16,197 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-11 20:17:16,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:16,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591124685] [2020-09-11 20:17:16,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:17:16,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591124685] [2020-09-11 20:17:16,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009580501] [2020-09-11 20:17:16,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:17:16,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:17:16,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:16,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:16,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:17:16,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:16,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:16,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713938901] [2020-09-11 20:17:16,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:16,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:16,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:16,536 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-11 20:17:17,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:17,807 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-11 20:17:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:17,808 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:17,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:17,896 INFO L225 Difference]: With dead ends: 29064 [2020-09-11 20:17:17,896 INFO L226 Difference]: Without dead ends: 29037 [2020-09-11 20:17:17,896 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 [2020-09-11 20:17:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-11 20:17:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-11 20:17:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-11 20:17:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-11 20:17:18,615 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-11 20:17:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:18,615 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-11 20:17:18,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-11 20:17:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:18,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:18,619 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:18,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-11 20:17:18,820 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]=== [2020-09-11 20:17:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:18,820 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-11 20:17:18,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:18,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106457358] [2020-09-11 20:17:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:17:18,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106457358] [2020-09-11 20:17:18,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278520025] [2020-09-11 20:17:18,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:17:19,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 20:17:19,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:19,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:19,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:17:19,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:19,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:19,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109679632] [2020-09-11 20:17:19,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:19,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:19,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:19,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:19,165 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-11 20:17:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:20,349 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-11 20:17:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:20,350 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:20,420 INFO L225 Difference]: With dead ends: 28523 [2020-09-11 20:17:20,420 INFO L226 Difference]: Without dead ends: 28501 [2020-09-11 20:17:20,420 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 [2020-09-11 20:17:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-11 20:17:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-11 20:17:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-11 20:17:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-11 20:17:20,851 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-11 20:17:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:20,851 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-11 20:17:20,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-11 20:17:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:20,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:20,855 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:21,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:21,056 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]=== [2020-09-11 20:17:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:21,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-11 20:17:21,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:21,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471551060] [2020-09-11 20:17:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:21,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471551060] [2020-09-11 20:17:21,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964573990] [2020-09-11 20:17:21,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:21,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 20:17:21,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:21,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:21,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:21,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:21,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:21,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767232653] [2020-09-11 20:17:21,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:21,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:21,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:21,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:21,370 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-11 20:17:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:22,468 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-11 20:17:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:22,469 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:22,552 INFO L225 Difference]: With dead ends: 28636 [2020-09-11 20:17:22,552 INFO L226 Difference]: Without dead ends: 28616 [2020-09-11 20:17:22,552 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 [2020-09-11 20:17:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-11 20:17:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-11 20:17:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-11 20:17:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-11 20:17:22,968 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-11 20:17:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:22,969 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-11 20:17:22,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-11 20:17:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:22,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:22,972 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:23,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-11 20:17:23,178 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]=== [2020-09-11 20:17:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:23,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-11 20:17:23,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:23,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243927842] [2020-09-11 20:17:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:23,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243927842] [2020-09-11 20:17:23,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223248588] [2020-09-11 20:17:23,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:23,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 20:17:23,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:23,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:23,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:23,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:23,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:23,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899854544] [2020-09-11 20:17:23,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:23,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:23,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:23,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:23,516 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-11 20:17:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:24,634 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-11 20:17:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:24,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:24,699 INFO L225 Difference]: With dead ends: 28297 [2020-09-11 20:17:24,699 INFO L226 Difference]: Without dead ends: 28277 [2020-09-11 20:17:24,699 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 [2020-09-11 20:17:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-11 20:17:25,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-11 20:17:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-11 20:17:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-11 20:17:25,365 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-11 20:17:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:25,365 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-11 20:17:25,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-11 20:17:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:25,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:25,368 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:25,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:25,569 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]=== [2020-09-11 20:17:25,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:25,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-11 20:17:25,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:25,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743301055] [2020-09-11 20:17:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:25,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743301055] [2020-09-11 20:17:25,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457141080] [2020-09-11 20:17:25,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:25,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 20:17:25,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:25,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:25,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:25,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:25,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:25,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895582341] [2020-09-11 20:17:25,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:25,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:25,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:25,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:25,900 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-11 20:17:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:27,210 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-11 20:17:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:27,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:27,281 INFO L225 Difference]: With dead ends: 28565 [2020-09-11 20:17:27,281 INFO L226 Difference]: Without dead ends: 28538 [2020-09-11 20:17:27,281 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 [2020-09-11 20:17:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-11 20:17:27,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-11 20:17:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-11 20:17:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-11 20:17:27,710 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-11 20:17:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:27,710 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-11 20:17:27,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-11 20:17:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:27,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:27,714 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:27,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-11 20:17:27,915 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]=== [2020-09-11 20:17:27,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:27,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-11 20:17:27,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:27,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487400255] [2020-09-11 20:17:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:28,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487400255] [2020-09-11 20:17:28,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355885327] [2020-09-11 20:17:28,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:28,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 20:17:28,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:17:28,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:17:28,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 20:17:28,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:28,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:17:28,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015586658] [2020-09-11 20:17:28,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:17:28,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:28,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:17:28,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:17:28,260 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-11 20:17:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:29,702 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-11 20:17:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:29,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:17:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:29,772 INFO L225 Difference]: With dead ends: 28213 [2020-09-11 20:17:29,773 INFO L226 Difference]: Without dead ends: 28186 [2020-09-11 20:17:29,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:17:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-11 20:17:30,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-11 20:17:30,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-11 20:17:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-11 20:17:30,199 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-11 20:17:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:30,200 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-11 20:17:30,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:17:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-11 20:17:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:30,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:30,203 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:30,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:30,404 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]=== [2020-09-11 20:17:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-11 20:17:30,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:30,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738362125] [2020-09-11 20:17:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:17:30,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738362125] [2020-09-11 20:17:30,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:30,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:17:30,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15999856] [2020-09-11 20:17:30,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:17:30,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:30,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:17:30,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:17:30,508 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-11 20:17:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:31,635 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-11 20:17:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:31,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 20:17:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:31,709 INFO L225 Difference]: With dead ends: 28226 [2020-09-11 20:17:31,709 INFO L226 Difference]: Without dead ends: 28206 [2020-09-11 20:17:31,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 20:17:31,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-11 20:17:32,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-11 20:17:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-11 20:17:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-11 20:17:32,358 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-11 20:17:32,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:32,358 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-11 20:17:32,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:17:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-11 20:17:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:32,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:32,362 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:32,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-11 20:17:32,363 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]=== [2020-09-11 20:17:32,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-11 20:17:32,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:32,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239858208] [2020-09-11 20:17:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:17:32,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239858208] [2020-09-11 20:17:32,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:32,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:17:32,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27481312] [2020-09-11 20:17:32,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:17:32,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:32,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:17:32,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:17:32,468 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-11 20:17:33,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:33,525 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-11 20:17:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:33,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 20:17:33,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:33,598 INFO L225 Difference]: With dead ends: 27801 [2020-09-11 20:17:33,598 INFO L226 Difference]: Without dead ends: 27781 [2020-09-11 20:17:33,599 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 [2020-09-11 20:17:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-11 20:17:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-11 20:17:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-11 20:17:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-11 20:17:34,020 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-11 20:17:34,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:34,021 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-11 20:17:34,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:17:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-11 20:17:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:34,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:34,024 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:34,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-11 20:17:34,025 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]=== [2020-09-11 20:17:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:34,025 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-11 20:17:34,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:34,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279399450] [2020-09-11 20:17:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:17:34,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279399450] [2020-09-11 20:17:34,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:34,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:17:34,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418178887] [2020-09-11 20:17:34,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:17:34,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:34,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:17:34,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:17:34,125 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-11 20:17:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:35,274 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-11 20:17:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:35,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 20:17:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:35,359 INFO L225 Difference]: With dead ends: 27548 [2020-09-11 20:17:35,359 INFO L226 Difference]: Without dead ends: 27521 [2020-09-11 20:17:35,359 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 [2020-09-11 20:17:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-11 20:17:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-11 20:17:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-11 20:17:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-11 20:17:35,818 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-11 20:17:35,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:35,818 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-11 20:17:35,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:17:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-11 20:17:35,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:35,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:35,822 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:35,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-11 20:17:35,822 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]=== [2020-09-11 20:17:35,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:35,823 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-11 20:17:35,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:35,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886164774] [2020-09-11 20:17:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:17:35,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886164774] [2020-09-11 20:17:35,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:35,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:17:35,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197593747] [2020-09-11 20:17:35,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:17:35,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:35,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:17:35,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:17:35,929 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-11 20:17:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:37,009 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-11 20:17:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:37,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 20:17:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:37,074 INFO L225 Difference]: With dead ends: 27167 [2020-09-11 20:17:37,074 INFO L226 Difference]: Without dead ends: 27147 [2020-09-11 20:17:37,074 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 [2020-09-11 20:17:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-11 20:17:37,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-11 20:17:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-11 20:17:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-11 20:17:37,467 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-11 20:17:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:37,467 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-11 20:17:37,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:17:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-11 20:17:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:37,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:37,470 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:37,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-11 20:17:37,470 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]=== [2020-09-11 20:17:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-11 20:17:37,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:37,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026953438] [2020-09-11 20:17:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:17:37,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026953438] [2020-09-11 20:17:37,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:37,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:17:37,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950109015] [2020-09-11 20:17:37,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:17:37,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:37,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:17:37,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:17:37,573 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-11 20:17:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:38,626 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-11 20:17:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:38,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 20:17:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:38,699 INFO L225 Difference]: With dead ends: 26955 [2020-09-11 20:17:38,699 INFO L226 Difference]: Without dead ends: 26928 [2020-09-11 20:17:38,700 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 [2020-09-11 20:17:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-11 20:17:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-11 20:17:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-11 20:17:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-11 20:17:39,134 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-11 20:17:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:39,135 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-11 20:17:39,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:17:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-11 20:17:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:39,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:39,138 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:39,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-11 20:17:39,139 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]=== [2020-09-11 20:17:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-11 20:17:39,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092554982] [2020-09-11 20:17:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:39,315 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-11 20:17:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:17:39,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092554982] [2020-09-11 20:17:39,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:39,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:17:39,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836759059] [2020-09-11 20:17:39,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:17:39,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:39,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:17:39,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:17:39,375 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-11 20:17:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:40,612 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-11 20:17:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:17:40,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 20:17:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:40,676 INFO L225 Difference]: With dead ends: 26632 [2020-09-11 20:17:40,676 INFO L226 Difference]: Without dead ends: 26605 [2020-09-11 20:17:40,676 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 [2020-09-11 20:17:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-11 20:17:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-11 20:17:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-11 20:17:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-11 20:17:41,031 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-11 20:17:41,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:41,031 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-11 20:17:41,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:17:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-11 20:17:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:17:41,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:41,034 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:41,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-11 20:17:41,034 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]=== [2020-09-11 20:17:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:41,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-11 20:17:41,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:41,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115537125] [2020-09-11 20:17:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-11 20:17:41,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115537125] [2020-09-11 20:17:41,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:41,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:17:41,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669593288] [2020-09-11 20:17:41,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:17:41,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:41,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:17:41,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:17:41,095 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-11 20:17:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:41,281 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-11 20:17:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:17:41,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-11 20:17:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:41,310 INFO L225 Difference]: With dead ends: 11919 [2020-09-11 20:17:41,310 INFO L226 Difference]: Without dead ends: 11887 [2020-09-11 20:17:41,311 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 [2020-09-11 20:17:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-11 20:17:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-11 20:17:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-11 20:17:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-11 20:17:41,558 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-11 20:17:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:41,558 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-11 20:17:41,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:17:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-11 20:17:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-11 20:17:41,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:41,562 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:41,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-11 20:17:41,563 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]=== [2020-09-11 20:17:41,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:41,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-11 20:17:41,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:41,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282853061] [2020-09-11 20:17:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:17:41,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:17:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:17:41,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:17:41,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:17:41,594 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:17:41,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-11 20:17:41,594 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:17:41,595 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:17:41,595 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-11 20:17:41,619 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,619 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,621 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,622 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,622 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,625 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,625 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,625 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,625 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,629 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,629 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,629 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,629 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,629 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,629 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,629 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,633 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,633 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,636 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,636 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,637 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,637 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,638 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,640 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,641 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,641 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,642 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,642 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,644 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,644 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,644 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:17:41,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-11 20:17:41,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:17:41,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:17:41,656 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:17:41,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:17:41,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:17:41,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:17:41,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:17:41,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:17:41,659 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-11 20:17:41,659 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-11 20:17:41,678 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-11 20:17:41,678 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 20:17:41,680 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. [2020-09-11 20:17:41,685 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-11 20:17:41,706 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-11 20:17:41,707 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 20:17:41,708 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. [2020-09-11 20:17:41,715 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-11 20:17:41,716 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:17:44,076 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-11 20:17:44,460 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-11 20:17:44,658 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-11 20:17:44,663 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-11 20:17:44,664 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-11 20:17:44,664 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-11 20:17:46,366 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-11 20:17:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-11 20:17:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 20:17:46,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:46,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 20:17:46,366 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]=== [2020-09-11 20:17:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:46,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-11 20:17:46,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:46,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70451126] [2020-09-11 20:17:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:17:46,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70451126] [2020-09-11 20:17:46,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:46,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:17:46,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116635109] [2020-09-11 20:17:46,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:17:46,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:46,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:17:46,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:17:46,385 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-11 20:17:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:46,545 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-11 20:17:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:17:46,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 20:17:46,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:46,598 INFO L225 Difference]: With dead ends: 17885 [2020-09-11 20:17:46,599 INFO L226 Difference]: Without dead ends: 16791 [2020-09-11 20:17:46,599 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 [2020-09-11 20:17:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-11 20:17:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-11 20:17:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-11 20:17:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-11 20:17:47,632 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-11 20:17:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:47,632 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-11 20:17:47,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:17:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-11 20:17:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 20:17:47,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:47,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:47,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-11 20:17:47,633 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]=== [2020-09-11 20:17:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:47,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-11 20:17:47,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:47,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802129737] [2020-09-11 20:17:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:17:47,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802129737] [2020-09-11 20:17:47,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:47,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:17:47,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149634627] [2020-09-11 20:17:47,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:17:47,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:47,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:17:47,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:17:47,670 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-11 20:17:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:47,978 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-11 20:17:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:17:47,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 20:17:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:48,087 INFO L225 Difference]: With dead ends: 30985 [2020-09-11 20:17:48,087 INFO L226 Difference]: Without dead ends: 30977 [2020-09-11 20:17:48,088 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 [2020-09-11 20:17:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-11 20:17:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-11 20:17:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-11 20:17:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-11 20:17:49,198 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-11 20:17:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:49,198 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-11 20:17:49,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:17:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-11 20:17:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:17:49,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:49,198 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:49,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-11 20:17:49,199 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]=== [2020-09-11 20:17:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:49,199 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-11 20:17:49,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:49,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202887726] [2020-09-11 20:17:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:17:49,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202887726] [2020-09-11 20:17:49,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:49,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:17:49,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3967097] [2020-09-11 20:17:49,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:17:49,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:49,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:17:49,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:17:49,240 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-11 20:17:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:49,601 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-11 20:17:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:17:49,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 20:17:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:49,746 INFO L225 Difference]: With dead ends: 36296 [2020-09-11 20:17:49,746 INFO L226 Difference]: Without dead ends: 36280 [2020-09-11 20:17:49,746 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 [2020-09-11 20:17:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-11 20:17:53,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-11 20:17:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-11 20:17:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-11 20:17:53,173 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-11 20:17:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:53,173 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-11 20:17:53,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:17:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-11 20:17:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:17:53,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:53,174 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:53,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-11 20:17:53,174 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]=== [2020-09-11 20:17:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-11 20:17:53,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:53,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945026142] [2020-09-11 20:17:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:17:53,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945026142] [2020-09-11 20:17:53,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897784429] [2020-09-11 20:17:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:53,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:17:53,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:17:53,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:53,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:17:53,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509791756] [2020-09-11 20:17:53,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:17:53,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:53,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:17:53,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:17:53,433 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-11 20:17:54,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:54,218 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-11 20:17:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:17:54,219 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 20:17:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:54,423 INFO L225 Difference]: With dead ends: 56720 [2020-09-11 20:17:54,424 INFO L226 Difference]: Without dead ends: 56704 [2020-09-11 20:17:54,424 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 [2020-09-11 20:17:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-11 20:17:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-11 20:17:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-11 20:17:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-11 20:17:55,923 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-11 20:17:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:55,923 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-11 20:17:55,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:17:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-11 20:17:55,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:17:55,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:55,924 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:56,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-11 20:17:56,125 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]=== [2020-09-11 20:17:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:56,126 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-11 20:17:56,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:56,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688694375] [2020-09-11 20:17:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:17:56,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688694375] [2020-09-11 20:17:56,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:56,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:17:56,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867024433] [2020-09-11 20:17:56,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:17:56,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:56,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:17:56,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:17:56,187 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-11 20:17:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:56,960 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-11 20:17:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:17:56,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 20:17:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:57,166 INFO L225 Difference]: With dead ends: 58078 [2020-09-11 20:17:57,166 INFO L226 Difference]: Without dead ends: 58061 [2020-09-11 20:17:57,166 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 [2020-09-11 20:18:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-11 20:18:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-11 20:18:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-11 20:18:00,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-11 20:18:00,916 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-11 20:18:00,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:00,916 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-11 20:18:00,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:18:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-11 20:18:00,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 20:18:00,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:00,917 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:00,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-11 20:18:00,917 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]=== [2020-09-11 20:18:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:00,918 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-11 20:18:00,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:00,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203081815] [2020-09-11 20:18:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:18:00,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203081815] [2020-09-11 20:18:00,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:18:00,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:18:00,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563921020] [2020-09-11 20:18:00,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:18:00,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:00,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:18:00,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:18:00,971 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-11 20:18:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:01,470 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-11 20:18:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:18:01,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 20:18:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:01,630 INFO L225 Difference]: With dead ends: 41885 [2020-09-11 20:18:01,631 INFO L226 Difference]: Without dead ends: 41856 [2020-09-11 20:18:01,631 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 [2020-09-11 20:18:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-11 20:18:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-11 20:18:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-11 20:18:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-11 20:18:03,053 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-11 20:18:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:03,054 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-11 20:18:03,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:18:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-11 20:18:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:18:03,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:03,054 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:03,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-11 20:18:03,055 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]=== [2020-09-11 20:18:03,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-11 20:18:03,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:03,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34267592] [2020-09-11 20:18:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:18:03,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34267592] [2020-09-11 20:18:03,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704273057] [2020-09-11 20:18:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:18:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:03,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:18:03,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:18:03,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:03,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:18:03,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619802626] [2020-09-11 20:18:03,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:18:03,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:03,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:18:03,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:18:03,322 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-11 20:18:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:04,877 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-11 20:18:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:18:04,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 20:18:04,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:05,124 INFO L225 Difference]: With dead ends: 66831 [2020-09-11 20:18:05,125 INFO L226 Difference]: Without dead ends: 66807 [2020-09-11 20:18:05,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-11 20:18:05,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-11 20:18:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-11 20:18:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-11 20:18:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-11 20:18:07,054 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-11 20:18:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:07,054 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-11 20:18:07,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:18:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-11 20:18:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:18:07,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:07,056 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:07,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-11 20:18:07,256 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]=== [2020-09-11 20:18:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:07,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-11 20:18:07,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:07,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517804471] [2020-09-11 20:18:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:18:07,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517804471] [2020-09-11 20:18:07,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614742320] [2020-09-11 20:18:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:18:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:07,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:18:07,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:18:07,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:07,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:18:07,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673675176] [2020-09-11 20:18:07,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:18:07,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:18:07,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:18:07,531 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-11 20:18:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:08,334 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-11 20:18:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:18:08,335 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 20:18:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:08,585 INFO L225 Difference]: With dead ends: 69484 [2020-09-11 20:18:08,585 INFO L226 Difference]: Without dead ends: 69451 [2020-09-11 20:18:08,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-11 20:18:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-11 20:18:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-11 20:18:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-11 20:18:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-11 20:18:12,671 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-11 20:18:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:12,671 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-11 20:18:12,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:18:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-11 20:18:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:18:12,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:12,672 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:12,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:18:12,873 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]=== [2020-09-11 20:18:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-11 20:18:12,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:12,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513614346] [2020-09-11 20:18:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:18:12,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513614346] [2020-09-11 20:18:12,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:18:12,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:18:12,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264470342] [2020-09-11 20:18:12,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:18:12,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:12,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:18:12,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:18:12,940 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-11 20:18:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:13,768 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-11 20:18:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:18:13,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 20:18:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:14,048 INFO L225 Difference]: With dead ends: 70510 [2020-09-11 20:18:14,048 INFO L226 Difference]: Without dead ends: 70477 [2020-09-11 20:18:14,048 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 [2020-09-11 20:18:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-11 20:18:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-11 20:18:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-11 20:18:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-11 20:18:16,667 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-11 20:18:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:16,667 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-11 20:18:16,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:18:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-11 20:18:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:18:16,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:16,668 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:16,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-11 20:18:16,668 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]=== [2020-09-11 20:18:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-11 20:18:16,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:16,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905680890] [2020-09-11 20:18:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:18:16,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905680890] [2020-09-11 20:18:16,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:18:16,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:18:16,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380100684] [2020-09-11 20:18:16,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:18:16,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:16,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:18:16,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:18:16,736 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-11 20:18:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:17,514 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-11 20:18:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:18:17,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 20:18:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:17,753 INFO L225 Difference]: With dead ends: 70096 [2020-09-11 20:18:17,753 INFO L226 Difference]: Without dead ends: 70063 [2020-09-11 20:18:17,754 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 [2020-09-11 20:18:18,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-11 20:18:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-11 20:18:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-11 20:18:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-11 20:18:19,675 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-11 20:18:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:19,675 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-11 20:18:19,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:18:19,675 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-11 20:18:19,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:18:19,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:19,676 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:19,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-11 20:18:19,677 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]=== [2020-09-11 20:18:19,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:19,677 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-11 20:18:19,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:19,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432512156] [2020-09-11 20:18:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:18:19,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432512156] [2020-09-11 20:18:19,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580597576] [2020-09-11 20:18:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:18:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:19,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:18:19,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:18:20,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:20,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:18:20,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894691633] [2020-09-11 20:18:20,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:18:20,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:20,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:18:20,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:18:20,025 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-11 20:18:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:22,965 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-11 20:18:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:18:22,965 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:18:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:23,288 INFO L225 Difference]: With dead ends: 100731 [2020-09-11 20:18:23,288 INFO L226 Difference]: Without dead ends: 100715 [2020-09-11 20:18:23,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:18:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-11 20:18:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-11 20:18:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-11 20:18:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-11 20:18:26,083 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-11 20:18:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:26,083 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-11 20:18:26,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:18:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-11 20:18:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:18:26,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:26,085 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:26,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-11 20:18:26,285 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]=== [2020-09-11 20:18:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:26,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-11 20:18:26,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:26,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689548127] [2020-09-11 20:18:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:18:26,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689548127] [2020-09-11 20:18:26,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443895445] [2020-09-11 20:18:26,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:18:26,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:18:26,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:18:26,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:18:26,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:18:26,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:26,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:18:26,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212957189] [2020-09-11 20:18:26,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:18:26,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:18:26,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:18:26,604 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-11 20:18:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:28,238 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-11 20:18:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:18:28,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:18:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:28,539 INFO L225 Difference]: With dead ends: 99876 [2020-09-11 20:18:28,539 INFO L226 Difference]: Without dead ends: 99855 [2020-09-11 20:18:28,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:18:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-11 20:18:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-11 20:18:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-11 20:18:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-11 20:18:33,572 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-11 20:18:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:33,573 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-11 20:18:33,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:18:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-11 20:18:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:18:33,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:33,574 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:33,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:18:33,783 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]=== [2020-09-11 20:18:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:33,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-11 20:18:33,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:33,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57603830] [2020-09-11 20:18:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:18:33,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57603830] [2020-09-11 20:18:33,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230385773] [2020-09-11 20:18:33,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:18:33,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 20:18:33,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:18:33,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:18:33,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:18:34,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:34,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:18:34,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859203926] [2020-09-11 20:18:34,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:18:34,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:34,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:18:34,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:18:34,117 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-11 20:18:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:35,804 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-11 20:18:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:18:35,805 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:18:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:36,093 INFO L225 Difference]: With dead ends: 100071 [2020-09-11 20:18:36,094 INFO L226 Difference]: Without dead ends: 100055 [2020-09-11 20:18:36,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:18:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-11 20:18:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-11 20:18:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-11 20:18:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-11 20:18:38,772 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-11 20:18:38,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:38,772 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-11 20:18:38,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:18:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-11 20:18:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:18:38,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:38,773 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:38,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-11 20:18:38,974 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]=== [2020-09-11 20:18:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-11 20:18:38,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:38,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623848742] [2020-09-11 20:18:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:18:39,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623848742] [2020-09-11 20:18:39,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471298114] [2020-09-11 20:18:39,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:18:39,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 20:18:39,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:18:39,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:18:39,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:18:39,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:39,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:18:39,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050906683] [2020-09-11 20:18:39,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:18:39,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:18:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:18:39,312 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-11 20:18:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:40,787 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-11 20:18:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:18:40,788 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 20:18:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:41,079 INFO L225 Difference]: With dead ends: 99523 [2020-09-11 20:18:41,079 INFO L226 Difference]: Without dead ends: 99502 [2020-09-11 20:18:41,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:18:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-11 20:18:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-11 20:18:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-11 20:18:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-11 20:18:43,838 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-11 20:18:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:43,838 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-11 20:18:43,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:18:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-11 20:18:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:18:43,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:43,839 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:44,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-11 20:18:44,040 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]=== [2020-09-11 20:18:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-11 20:18:44,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:44,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514261438] [2020-09-11 20:18:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:18:44,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514261438] [2020-09-11 20:18:44,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:18:44,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:18:44,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121901850] [2020-09-11 20:18:44,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:18:44,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:44,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:18:44,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:18:44,133 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-11 20:18:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:45,636 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-11 20:18:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:18:45,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 20:18:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:45,919 INFO L225 Difference]: With dead ends: 99710 [2020-09-11 20:18:45,919 INFO L226 Difference]: Without dead ends: 99694 [2020-09-11 20:18:45,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 20:18:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-11 20:18:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-11 20:18:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-11 20:18:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-11 20:18:48,461 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-11 20:18:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:48,461 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-11 20:18:48,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:18:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-11 20:18:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:18:48,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:48,462 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:48,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-11 20:18:48,462 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]=== [2020-09-11 20:18:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:48,463 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-11 20:18:48,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:48,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465280242] [2020-09-11 20:18:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:18:48,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465280242] [2020-09-11 20:18:48,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:18:48,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 20:18:48,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326065591] [2020-09-11 20:18:48,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:18:48,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:48,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:18:48,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:18:48,550 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-11 20:18:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:50,021 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-11 20:18:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:18:50,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 20:18:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:50,318 INFO L225 Difference]: With dead ends: 98863 [2020-09-11 20:18:50,318 INFO L226 Difference]: Without dead ends: 98841 [2020-09-11 20:18:50,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 20:18:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-11 20:18:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-11 20:18:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-11 20:18:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-11 20:18:52,781 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-11 20:18:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:52,781 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-11 20:18:52,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:18:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-11 20:18:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:18:52,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:52,782 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:52,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-11 20:18:52,783 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]=== [2020-09-11 20:18:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:52,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-11 20:18:52,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:52,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635296817] [2020-09-11 20:18:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:18:52,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635296817] [2020-09-11 20:18:52,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:18:52,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:18:52,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307433261] [2020-09-11 20:18:52,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:18:52,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:52,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:18:52,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:18:52,833 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-11 20:18:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:53,197 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-11 20:18:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:18:53,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 20:18:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:53,331 INFO L225 Difference]: With dead ends: 46463 [2020-09-11 20:18:53,331 INFO L226 Difference]: Without dead ends: 46417 [2020-09-11 20:18:53,331 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 [2020-09-11 20:18:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-11 20:18:54,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-11 20:18:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-11 20:18:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-11 20:18:55,029 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-11 20:18:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:55,030 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-11 20:18:55,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:18:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-11 20:18:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:18:55,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:55,031 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:55,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-11 20:18:55,032 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]=== [2020-09-11 20:18:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:55,032 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-11 20:18:55,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:55,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026753578] [2020-09-11 20:18:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 20:18:55,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026753578] [2020-09-11 20:18:55,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167317860] [2020-09-11 20:18:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:18:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:55,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:18:55,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 20:18:55,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:55,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:18:55,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263673612] [2020-09-11 20:18:55,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:18:55,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:55,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:18:55,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:18:55,296 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-11 20:18:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:18:56,189 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-11 20:18:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:18:56,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 20:18:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:18:56,415 INFO L225 Difference]: With dead ends: 75380 [2020-09-11 20:18:56,415 INFO L226 Difference]: Without dead ends: 75344 [2020-09-11 20:18:56,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-11 20:18:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-11 20:18:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-11 20:18:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-11 20:18:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-11 20:18:58,735 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-11 20:18:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:58,735 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-11 20:18:58,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:18:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-11 20:18:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:18:58,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:58,737 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:58,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:18:58,937 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]=== [2020-09-11 20:18:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-11 20:18:58,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:58,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461982943] [2020-09-11 20:18:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:18:59,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461982943] [2020-09-11 20:18:59,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604946364] [2020-09-11 20:18:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:18:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:18:59,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:18:59,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:18:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:18:59,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:18:59,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:18:59,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972759685] [2020-09-11 20:18:59,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:18:59,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:18:59,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:18:59,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:18:59,205 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-11 20:19:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:00,041 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-11 20:19:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:19:00,042 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 20:19:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:00,276 INFO L225 Difference]: With dead ends: 79487 [2020-09-11 20:19:00,277 INFO L226 Difference]: Without dead ends: 79445 [2020-09-11 20:19:00,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-11 20:19:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-11 20:19:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-11 20:19:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-11 20:19:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-11 20:19:02,734 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-11 20:19:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:02,734 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-11 20:19:02,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:19:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-11 20:19:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:19:02,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:02,736 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:02,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:19:02,937 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]=== [2020-09-11 20:19:02,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:02,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-11 20:19:02,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:02,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695084772] [2020-09-11 20:19:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:19:03,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695084772] [2020-09-11 20:19:03,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871919561] [2020-09-11 20:19:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:19:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:03,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 20:19:03,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:19:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 20:19:03,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:19:03,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 20:19:03,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534169917] [2020-09-11 20:19:03,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 20:19:03,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:03,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 20:19:03,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:19:03,189 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-11 20:19:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:04,013 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-11 20:19:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:19:04,014 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 20:19:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:04,282 INFO L225 Difference]: With dead ends: 82728 [2020-09-11 20:19:04,283 INFO L226 Difference]: Without dead ends: 82673 [2020-09-11 20:19:04,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-11 20:19:05,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-11 20:19:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-11 20:19:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-11 20:19:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-11 20:19:06,788 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-11 20:19:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:06,789 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-11 20:19:06,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 20:19:06,789 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-11 20:19:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:19:06,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:06,791 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:06,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:19:06,992 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]=== [2020-09-11 20:19:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-11 20:19:06,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:06,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72885631] [2020-09-11 20:19:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:19:07,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72885631] [2020-09-11 20:19:07,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:19:07,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:19:07,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800561313] [2020-09-11 20:19:07,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:19:07,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:07,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:19:07,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:19:07,060 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-11 20:19:07,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:07,840 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-11 20:19:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:19:07,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 20:19:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:08,091 INFO L225 Difference]: With dead ends: 83507 [2020-09-11 20:19:08,091 INFO L226 Difference]: Without dead ends: 83452 [2020-09-11 20:19:08,091 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 [2020-09-11 20:19:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-11 20:19:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-11 20:19:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-11 20:19:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-11 20:19:10,674 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-11 20:19:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:10,674 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-11 20:19:10,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:19:10,674 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-11 20:19:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:19:10,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:10,677 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:10,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-11 20:19:10,677 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]=== [2020-09-11 20:19:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-11 20:19:10,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:10,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846124379] [2020-09-11 20:19:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:19:10,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846124379] [2020-09-11 20:19:10,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:19:10,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:19:10,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726895226] [2020-09-11 20:19:10,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:19:10,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:19:10,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:19:10,745 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-11 20:19:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:11,589 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-11 20:19:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:19:11,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 20:19:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:11,841 INFO L225 Difference]: With dead ends: 83523 [2020-09-11 20:19:11,841 INFO L226 Difference]: Without dead ends: 83468 [2020-09-11 20:19:11,841 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 [2020-09-11 20:19:12,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-11 20:19:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-11 20:19:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-11 20:19:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-11 20:19:14,401 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-11 20:19:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:14,401 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-11 20:19:14,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:19:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-11 20:19:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:19:14,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:14,404 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:14,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-11 20:19:14,404 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]=== [2020-09-11 20:19:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:14,404 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-11 20:19:14,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:14,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849958269] [2020-09-11 20:19:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 20:19:14,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849958269] [2020-09-11 20:19:14,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:19:14,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:19:14,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582180517] [2020-09-11 20:19:14,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:19:14,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:14,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:19:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:19:14,470 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-11 20:19:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:15,241 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-11 20:19:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 20:19:15,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 20:19:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:15,491 INFO L225 Difference]: With dead ends: 83918 [2020-09-11 20:19:15,491 INFO L226 Difference]: Without dead ends: 83863 [2020-09-11 20:19:15,492 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 [2020-09-11 20:19:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-11 20:19:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-11 20:19:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-11 20:19:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-11 20:19:18,068 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-11 20:19:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:18,068 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-11 20:19:18,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:19:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-11 20:19:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:19:18,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:18,071 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:18,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-11 20:19:18,072 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]=== [2020-09-11 20:19:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-11 20:19:18,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:18,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516898446] [2020-09-11 20:19:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:19:18,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516898446] [2020-09-11 20:19:18,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142041480] [2020-09-11 20:19:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:19:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:18,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:19:18,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:19:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:19:18,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:19:18,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:19:18,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924451165] [2020-09-11 20:19:18,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:19:18,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:18,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:19:18,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:19:18,402 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-11 20:19:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:20,306 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-11 20:19:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:19:20,306 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:19:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:20,662 INFO L225 Difference]: With dead ends: 122892 [2020-09-11 20:19:20,662 INFO L226 Difference]: Without dead ends: 122862 [2020-09-11 20:19:20,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:19:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-11 20:19:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-11 20:19:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-11 20:19:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-11 20:19:23,851 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-11 20:19:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:23,851 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-11 20:19:23,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:19:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-11 20:19:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:19:23,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:23,854 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:24,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-11 20:19:24,055 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]=== [2020-09-11 20:19:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:24,056 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-11 20:19:24,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:24,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975391439] [2020-09-11 20:19:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:19:24,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975391439] [2020-09-11 20:19:24,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679158255] [2020-09-11 20:19:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:19:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:24,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:19:24,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:19:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 20:19:24,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:19:24,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:19:24,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315027688] [2020-09-11 20:19:24,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:19:24,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:24,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:19:24,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:19:24,334 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-11 20:19:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:26,507 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-11 20:19:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:19:26,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:19:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:26,863 INFO L225 Difference]: With dead ends: 121590 [2020-09-11 20:19:26,863 INFO L226 Difference]: Without dead ends: 121560 [2020-09-11 20:19:26,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:19:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-11 20:19:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-11 20:19:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-11 20:19:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-11 20:19:32,471 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-11 20:19:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:32,471 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-11 20:19:32,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:19:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-11 20:19:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:19:32,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:32,475 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:32,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:19:32,683 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]=== [2020-09-11 20:19:32,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:32,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-11 20:19:32,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:32,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680078556] [2020-09-11 20:19:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 20:19:32,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680078556] [2020-09-11 20:19:32,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985897568] [2020-09-11 20:19:32,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 20:19:32,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:19:32,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:19:32,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:19:32,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:19:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 20:19:33,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:19:33,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:19:33,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321967373] [2020-09-11 20:19:33,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:19:33,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:19:33,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:19:33,029 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-11 20:19:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:19:34,752 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-11 20:19:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:19:34,752 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 20:19:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:19:35,074 INFO L225 Difference]: With dead ends: 120395 [2020-09-11 20:19:35,074 INFO L226 Difference]: Without dead ends: 120362 [2020-09-11 20:19:35,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 20:19:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-11 20:19:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-11 20:19:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-11 20:19:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-11 20:19:38,093 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-11 20:19:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:19:38,093 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-11 20:19:38,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 20:19:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-11 20:19:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:19:38,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:19:38,095 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:19:38,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-11 20:19:38,296 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]=== [2020-09-11 20:19:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:19:38,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-11 20:19:38,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:19:38,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129560171] [2020-09-11 20:19:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:19:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:19:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 20:19:38,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129560171] [2020-09-11 20:19:38,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926571448] [2020-09-11 20:19:38,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:19:38,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:19:38,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:19:38,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 20:19:38,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:19:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 20:19:38,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:19:38,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 20:19:38,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384011272] [2020-09-11 20:19:38,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 20:19:38,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:19:38,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 20:19:38,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-11 20:19:38,594 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. Received shutdown request... [2020-09-11 20:19:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 20:19:40,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-11 20:19:40,604 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-11 20:19:40,610 WARN L228 ceAbstractionStarter]: Timeout [2020-09-11 20:19:40,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:19:40 BasicIcfg [2020-09-11 20:19:40,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 20:19:40,612 INFO L168 Benchmark]: Toolchain (without parser) took 225181.03 ms. Allocated memory was 140.5 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 101.2 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-09-11 20:19:40,613 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-11 20:19:40,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 822.46 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 165.1 MB in the end (delta: -64.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:40,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.48 ms. Allocated memory is still 205.0 MB. Free memory was 165.1 MB in the beginning and 163.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:40,614 INFO L168 Benchmark]: Boogie Preprocessor took 37.27 ms. Allocated memory is still 205.0 MB. Free memory was 163.2 MB in the beginning and 161.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:40,614 INFO L168 Benchmark]: RCFGBuilder took 485.17 ms. Allocated memory is still 205.0 MB. Free memory was 161.3 MB in the beginning and 140.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:40,614 INFO L168 Benchmark]: TraceAbstraction took 223753.58 ms. Allocated memory was 205.0 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 140.7 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-09-11 20:19:40,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 822.46 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 165.1 MB in the end (delta: -64.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.48 ms. Allocated memory is still 205.0 MB. Free memory was 165.1 MB in the beginning and 163.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.27 ms. Allocated memory is still 205.0 MB. Free memory was 163.2 MB in the beginning and 161.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.17 ms. Allocated memory is still 205.0 MB. Free memory was 161.3 MB in the beginning and 140.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223753.58 ms. Allocated memory was 205.0 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 140.7 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 61 ProgramPointsBefore, 18 ProgramPointsAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 304 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 486 CheckedPairsTotal, 51 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 80 ProgramPointsBefore, 31 ProgramPointsAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 472 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 942 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 99 ProgramPointsBefore, 41 ProgramPointsAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1426 CheckedPairsTotal, 74 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.5s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 840 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2033 CheckedPairsTotal, 86 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.6s, 137 ProgramPointsBefore, 61 ProgramPointsAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 1058 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2999 CheckedPairsTotal, 104 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.0s, 156 ProgramPointsBefore, 71 ProgramPointsAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1407 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3678 CheckedPairsTotal, 113 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing difference of abstraction (36444states) and FLOYD_HOARE automaton (currently 29 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (18173 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 223.3s, OverallIterations: 102, TraceHistogramMax: 6, AutomataDifference: 86.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.7s, HoareTripleCheckerStatistics: 4459 SDtfs, 23550 SDslu, 15872 SDs, 0 SdLazy, 29977 SolverSat, 2096 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2634 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 1990 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13500 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 91.9s AutomataMinimizationTime, 96 MinimizatonAttempts, 1917805 StatesRemovedByMinimization, 89 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 2895 NumberOfCodeBlocks, 2867 NumberOfCodeBlocksAsserted, 168 NumberOfCheckSat, 2666 ConstructedInterpolants, 0 QuantifiedInterpolants, 345044 SizeOfPredicates, 232 NumberOfNonLiveVariables, 4921 ConjunctsInSsa, 364 ConjunctsInUnsatCore, 141 InterpolantComputations, 53 PerfectInterpolantSequences, 872/1544 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown