/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 00:47:48,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 00:47:48,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 00:47:48,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 00:47:48,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 00:47:48,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 00:47:48,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 00:47:48,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 00:47:48,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 00:47:48,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 00:47:48,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 00:47:48,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 00:47:48,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 00:47:48,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 00:47:48,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 00:47:48,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 00:47:48,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 00:47:48,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 00:47:48,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 00:47:48,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 00:47:48,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 00:47:48,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 00:47:48,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 00:47:48,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 00:47:48,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 00:47:48,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 00:47:48,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 00:47:48,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 00:47:48,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-15 00:47:48,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 00:47:48,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 00:47:48,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 00:47:48,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 00:47:48,658 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 00:47:48,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 00:47:48,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 00:47:48,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 00:47:48,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 00:47:48,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 00:47:48,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 00:47:48,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 00:47:48,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 00:47:48,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 00:47:48,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 00:47:48,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 00:47:48,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 00:47:48,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 00:47:48,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 00:47:48,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 00:47:48,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 00:47:48,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:47:48,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 00:47:48,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-15 00:47:48,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 00:47:48,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 00:47:48,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 00:47:48,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 00:47:48,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-15 00:47:48,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-15 00:47:49,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 00:47:49,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 00:47:49,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 00:47:49,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 00:47:49,134 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 00:47:49,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-15 00:47:49,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41ef7c0f6/53af3e340b674a3d80fba43ca895c464/FLAGe00a3c31f [2020-09-15 00:47:49,862 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 00:47:49,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-15 00:47:49,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41ef7c0f6/53af3e340b674a3d80fba43ca895c464/FLAGe00a3c31f [2020-09-15 00:47:50,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41ef7c0f6/53af3e340b674a3d80fba43ca895c464 [2020-09-15 00:47:50,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 00:47:50,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 00:47:50,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 00:47:50,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 00:47:50,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 00:47:50,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43eb884a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50, skipping insertion in model container [2020-09-15 00:47:50,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 00:47:50,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 00:47:50,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:47:50,781 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 00:47:50,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:47:50,902 INFO L208 MainTranslator]: Completed translation [2020-09-15 00:47:50,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50 WrapperNode [2020-09-15 00:47:50,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 00:47:50,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 00:47:50,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 00:47:50,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 00:47:50,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 00:47:50,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 00:47:50,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 00:47:50,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 00:47:50,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (1/1) ... [2020-09-15 00:47:50,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 00:47:50,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 00:47:50,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 00:47:50,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 00:47:50,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (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 [2020-09-15 00:47:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-15 00:47:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-15 00:47:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-15 00:47:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-15 00:47:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 00:47:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 00:47:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 00:47:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 00:47:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 00:47:51,083 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 00:47:51,493 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 00:47:51,493 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-15 00:47:51,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:47:51 BoogieIcfgContainer [2020-09-15 00:47:51,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 00:47:51,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 00:47:51,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 00:47:51,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 00:47:51,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 12:47:50" (1/3) ... [2020-09-15 00:47:51,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5980468a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:47:51, skipping insertion in model container [2020-09-15 00:47:51,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:50" (2/3) ... [2020-09-15 00:47:51,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5980468a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:47:51, skipping insertion in model container [2020-09-15 00:47:51,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:47:51" (3/3) ... [2020-09-15 00:47:51,508 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-09-15 00:47:51,519 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 00:47:51,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-15 00:47:51,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 00:47:51,530 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 00:47:51,560 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,560 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,570 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:51,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 00:47:51,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:47:51,623 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:47:51,623 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:47:51,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:47:51,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:47:51,623 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:47:51,624 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:47:51,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:47:51,642 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-15 00:47:51,645 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-15 00:47:51,708 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-15 00:47:51,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:47:51,715 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. [2020-09-15 00:47:51,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-15 00:47:51,739 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-15 00:47:51,740 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:47:51,741 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. [2020-09-15 00:47:51,743 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-15 00:47:51,744 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:47:53,364 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-15 00:47:53,624 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-09-15 00:47:53,713 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-15 00:47:53,714 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-15 00:47:53,718 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-15 00:47:53,730 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-15 00:47:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-15 00:47:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:47:53,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:53,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:47:53,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:47:53,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:53,749 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-15 00:47:53,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:53,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640341349] [2020-09-15 00:47:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:47:53,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640341349] [2020-09-15 00:47:53,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:53,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:47:53,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367903879] [2020-09-15 00:47:53,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:47:53,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:47:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:47:54,005 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-15 00:47:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:54,069 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-15 00:47:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:47:54,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:47:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:54,084 INFO L225 Difference]: With dead ends: 35 [2020-09-15 00:47:54,084 INFO L226 Difference]: Without dead ends: 31 [2020-09-15 00:47:54,086 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 [2020-09-15 00:47:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-15 00:47:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-15 00:47:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-15 00:47:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-15 00:47:54,125 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-15 00:47:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:54,126 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-15 00:47:54,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:47:54,126 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-15 00:47:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-15 00:47:54,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:54,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:54,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 00:47:54,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:47:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:54,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-15 00:47:54,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:54,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38278111] [2020-09-15 00:47:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:47:54,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38278111] [2020-09-15 00:47:54,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:54,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:47:54,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977054942] [2020-09-15 00:47:54,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:47:54,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:47:54,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:47:54,242 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-15 00:47:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:54,264 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-15 00:47:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 00:47:54,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-15 00:47:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:54,266 INFO L225 Difference]: With dead ends: 26 [2020-09-15 00:47:54,266 INFO L226 Difference]: Without dead ends: 24 [2020-09-15 00:47:54,268 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 [2020-09-15 00:47:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-15 00:47:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-15 00:47:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-15 00:47:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-15 00:47:54,273 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-15 00:47:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:54,273 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-15 00:47:54,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:47:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-15 00:47:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 00:47:54,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:54,274 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:54,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 00:47:54,275 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:47:54,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:54,275 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-15 00:47:54,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:54,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802577024] [2020-09-15 00:47:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:47:54,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:47:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:47:54,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:47:54,360 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:47:54,360 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:47:54,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 00:47:54,361 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:47:54,362 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:47:54,362 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-15 00:47:54,372 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,373 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,373 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,373 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,373 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,374 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,374 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,374 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,374 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,375 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,375 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,375 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,375 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,376 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,382 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,382 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,386 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,386 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:54,395 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 00:47:54,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:47:54,395 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:47:54,396 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:47:54,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:47:54,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:47:54,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:47:54,396 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:47:54,396 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:47:54,399 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-15 00:47:54,399 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-15 00:47:54,418 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-15 00:47:54,419 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:47:54,420 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. [2020-09-15 00:47:54,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-15 00:47:54,438 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-15 00:47:54,439 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:47:54,440 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. [2020-09-15 00:47:54,442 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-15 00:47:54,442 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:47:55,911 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-15 00:47:56,168 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-15 00:47:56,338 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 00:47:56,344 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-15 00:47:56,344 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-15 00:47:56,345 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-15 00:47:56,357 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-15 00:47:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-15 00:47:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:47:56,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:56,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:47:56,358 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-15 00:47:56,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:56,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800002368] [2020-09-15 00:47:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:47:56,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800002368] [2020-09-15 00:47:56,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:56,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:47:56,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692423443] [2020-09-15 00:47:56,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:47:56,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:56,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:47:56,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:47:56,428 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-15 00:47:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:56,479 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-15 00:47:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:47:56,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:47:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:56,485 INFO L225 Difference]: With dead ends: 185 [2020-09-15 00:47:56,485 INFO L226 Difference]: Without dead ends: 171 [2020-09-15 00:47:56,486 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 [2020-09-15 00:47:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-15 00:47:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-15 00:47:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-15 00:47:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-15 00:47:56,512 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-15 00:47:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:56,513 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-15 00:47:56,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:47:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-15 00:47:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:47:56,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:56,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:56,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 00:47:56,514 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:56,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-15 00:47:56,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:56,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892684578] [2020-09-15 00:47:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:47:56,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892684578] [2020-09-15 00:47:56,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:56,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:47:56,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028746968] [2020-09-15 00:47:56,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:47:56,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:56,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:47:56,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:47:56,602 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-15 00:47:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:56,723 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-15 00:47:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:47:56,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:47:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:56,727 INFO L225 Difference]: With dead ends: 205 [2020-09-15 00:47:56,727 INFO L226 Difference]: Without dead ends: 201 [2020-09-15 00:47:56,727 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 [2020-09-15 00:47:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-15 00:47:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-15 00:47:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-15 00:47:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-15 00:47:56,745 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-15 00:47:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:56,746 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-15 00:47:56,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:47:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-15 00:47:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:47:56,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:56,747 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:56,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 00:47:56,748 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-15 00:47:56,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:56,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783454962] [2020-09-15 00:47:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:47:56,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783454962] [2020-09-15 00:47:56,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:56,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:47:56,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253626400] [2020-09-15 00:47:56,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:47:56,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:56,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:47:56,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:47:56,841 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-15 00:47:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:56,932 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-15 00:47:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:47:56,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:47:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:56,936 INFO L225 Difference]: With dead ends: 189 [2020-09-15 00:47:56,936 INFO L226 Difference]: Without dead ends: 185 [2020-09-15 00:47:56,937 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 [2020-09-15 00:47:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-15 00:47:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-15 00:47:56,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-15 00:47:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-15 00:47:56,952 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-15 00:47:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:56,953 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-15 00:47:56,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:47:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-15 00:47:56,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 00:47:56,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:56,956 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:56,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 00:47:56,956 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:56,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-15 00:47:56,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:56,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082970489] [2020-09-15 00:47:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:47:56,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:47:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:47:57,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:47:57,043 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:47:57,043 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:47:57,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 00:47:57,044 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:47:57,044 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:47:57,052 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-15 00:47:57,065 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,065 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,066 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,066 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,071 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,072 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,083 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,083 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,093 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,093 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,094 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,094 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:57,105 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-15 00:47:57,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:47:57,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:47:57,106 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:47:57,106 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:47:57,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:47:57,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:47:57,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:47:57,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:47:57,108 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-15 00:47:57,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-15 00:47:57,147 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-15 00:47:57,147 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:47:57,148 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. [2020-09-15 00:47:57,154 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-15 00:47:57,178 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-15 00:47:57,179 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:47:57,181 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. [2020-09-15 00:47:57,184 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-15 00:47:57,185 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:47:58,825 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-15 00:47:59,131 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-15 00:47:59,298 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 00:47:59,306 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-15 00:47:59,306 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-15 00:47:59,306 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-15 00:47:59,339 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-15 00:47:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-15 00:47:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:47:59,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:59,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:47:59,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:59,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-15 00:47:59,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:59,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136414561] [2020-09-15 00:47:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:47:59,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136414561] [2020-09-15 00:47:59,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:59,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:47:59,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452059784] [2020-09-15 00:47:59,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:47:59,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:47:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:47:59,380 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-15 00:47:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:59,445 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-15 00:47:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:47:59,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:47:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:59,454 INFO L225 Difference]: With dead ends: 600 [2020-09-15 00:47:59,455 INFO L226 Difference]: Without dead ends: 559 [2020-09-15 00:47:59,455 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 [2020-09-15 00:47:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-15 00:47:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-15 00:47:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-15 00:47:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-15 00:47:59,532 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-15 00:47:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:59,532 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-15 00:47:59,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:47:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-15 00:47:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:47:59,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:59,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:59,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 00:47:59,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:59,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-15 00:47:59,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:59,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580231552] [2020-09-15 00:47:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:47:59,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580231552] [2020-09-15 00:47:59,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:59,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:47:59,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061357898] [2020-09-15 00:47:59,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:47:59,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:59,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:47:59,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:47:59,624 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-15 00:47:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:59,734 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-15 00:47:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:47:59,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:47:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:59,741 INFO L225 Difference]: With dead ends: 817 [2020-09-15 00:47:59,742 INFO L226 Difference]: Without dead ends: 812 [2020-09-15 00:47:59,743 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 [2020-09-15 00:47:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-15 00:47:59,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-15 00:47:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-15 00:47:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-15 00:47:59,792 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-15 00:47:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:59,792 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-15 00:47:59,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:47:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-15 00:47:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:47:59,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:59,794 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:59,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 00:47:59,795 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-15 00:47:59,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:59,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243355121] [2020-09-15 00:47:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:47:59,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243355121] [2020-09-15 00:47:59,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:59,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:47:59,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099102231] [2020-09-15 00:47:59,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:47:59,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:47:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:47:59,875 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-15 00:47:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:59,969 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-15 00:47:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:47:59,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:47:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:59,976 INFO L225 Difference]: With dead ends: 843 [2020-09-15 00:47:59,977 INFO L226 Difference]: Without dead ends: 836 [2020-09-15 00:47:59,977 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 [2020-09-15 00:47:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-15 00:48:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-15 00:48:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-15 00:48:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-15 00:48:00,005 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-15 00:48:00,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:00,005 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-15 00:48:00,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-15 00:48:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:00,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:00,007 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:00,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 00:48:00,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:48:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:00,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-15 00:48:00,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:00,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845379306] [2020-09-15 00:48:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:00,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845379306] [2020-09-15 00:48:00,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231714830] [2020-09-15 00:48:00,084 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 [2020-09-15 00:48:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:00,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:00,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:00,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:00,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:00,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393805664] [2020-09-15 00:48:00,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:00,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:00,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:00,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:00,263 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-15 00:48:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:00,606 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-15 00:48:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:00,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:48:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:00,617 INFO L225 Difference]: With dead ends: 1059 [2020-09-15 00:48:00,617 INFO L226 Difference]: Without dead ends: 1052 [2020-09-15 00:48:00,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-15 00:48:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-15 00:48:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-15 00:48:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-15 00:48:00,649 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-15 00:48:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:00,649 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-15 00:48:00,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-15 00:48:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:00,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:00,651 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:00,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-15 00:48:00,867 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:48:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:00,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-15 00:48:00,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:00,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891511951] [2020-09-15 00:48:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:00,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891511951] [2020-09-15 00:48:00,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:00,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:00,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413770354] [2020-09-15 00:48:00,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:00,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:00,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:00,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:00,939 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-15 00:48:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:01,244 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-15 00:48:01,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:01,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:48:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:01,259 INFO L225 Difference]: With dead ends: 1053 [2020-09-15 00:48:01,259 INFO L226 Difference]: Without dead ends: 1045 [2020-09-15 00:48:01,259 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 [2020-09-15 00:48:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-15 00:48:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-15 00:48:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-15 00:48:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-15 00:48:01,285 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-15 00:48:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:01,286 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-15 00:48:01,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-15 00:48:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:48:01,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:01,287 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:01,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-15 00:48:01,305 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:48:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:01,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-15 00:48:01,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:01,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760384520] [2020-09-15 00:48:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:01,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760384520] [2020-09-15 00:48:01,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:01,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:01,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032538022] [2020-09-15 00:48:01,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:01,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:01,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:01,374 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-15 00:48:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:01,459 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-15 00:48:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:01,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:48:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:01,465 INFO L225 Difference]: With dead ends: 736 [2020-09-15 00:48:01,465 INFO L226 Difference]: Without dead ends: 728 [2020-09-15 00:48:01,466 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 [2020-09-15 00:48:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-15 00:48:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-15 00:48:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-15 00:48:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-15 00:48:01,487 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-15 00:48:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:01,487 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-15 00:48:01,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-15 00:48:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 00:48:01,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:01,489 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:01,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-15 00:48:01,489 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:48:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:01,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-15 00:48:01,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:01,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436712251] [2020-09-15 00:48:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:01,504 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:01,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:01,524 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:48:01,524 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:48:01,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-15 00:48:01,525 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:48:01,525 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:48:01,526 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-15 00:48:01,537 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,538 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,539 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,539 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,539 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,540 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,540 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,540 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,541 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,541 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,541 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,542 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,542 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,559 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,559 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,559 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,560 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,560 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:01,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-15 00:48:01,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:48:01,570 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:48:01,570 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:48:01,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:48:01,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:48:01,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:48:01,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:48:01,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:48:01,572 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-15 00:48:01,572 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-15 00:48:01,587 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-15 00:48:01,587 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:48:01,588 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. [2020-09-15 00:48:01,591 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-15 00:48:01,604 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-15 00:48:01,604 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:48:01,606 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. [2020-09-15 00:48:01,609 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-15 00:48:01,609 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:48:03,418 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-15 00:48:03,523 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-15 00:48:03,762 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-15 00:48:03,971 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-15 00:48:04,089 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-15 00:48:04,089 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-15 00:48:04,089 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-15 00:48:04,205 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-15 00:48:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-15 00:48:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:48:04,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:04,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:48:04,206 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]=== [2020-09-15 00:48:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:04,207 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-15 00:48:04,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:04,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311795592] [2020-09-15 00:48:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:04,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311795592] [2020-09-15 00:48:04,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:04,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:48:04,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512724782] [2020-09-15 00:48:04,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:48:04,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:04,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:48:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:48:04,270 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-15 00:48:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:04,315 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-15 00:48:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:48:04,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:48:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:04,330 INFO L225 Difference]: With dead ends: 1889 [2020-09-15 00:48:04,330 INFO L226 Difference]: Without dead ends: 1767 [2020-09-15 00:48:04,331 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 [2020-09-15 00:48:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-15 00:48:04,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-15 00:48:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-15 00:48:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-15 00:48:04,415 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-15 00:48:04,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:04,415 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-15 00:48:04,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:48:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-15 00:48:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:48:04,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:04,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:04,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-15 00:48:04,416 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]=== [2020-09-15 00:48:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-15 00:48:04,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:04,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228222062] [2020-09-15 00:48:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:04,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228222062] [2020-09-15 00:48:04,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:04,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:04,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741519010] [2020-09-15 00:48:04,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:04,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:04,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:04,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:04,479 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-15 00:48:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:04,588 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-15 00:48:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:04,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:48:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:04,613 INFO L225 Difference]: With dead ends: 2905 [2020-09-15 00:48:04,613 INFO L226 Difference]: Without dead ends: 2899 [2020-09-15 00:48:04,614 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 [2020-09-15 00:48:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-15 00:48:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-15 00:48:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-15 00:48:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-15 00:48:04,718 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-15 00:48:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:04,719 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-15 00:48:04,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-15 00:48:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:48:04,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:04,720 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:04,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-15 00:48:04,720 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]=== [2020-09-15 00:48:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-15 00:48:04,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:04,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221207706] [2020-09-15 00:48:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:04,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221207706] [2020-09-15 00:48:04,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:04,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:04,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005240612] [2020-09-15 00:48:04,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:04,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:04,798 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-15 00:48:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:04,928 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-15 00:48:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:04,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:48:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:04,974 INFO L225 Difference]: With dead ends: 3204 [2020-09-15 00:48:04,975 INFO L226 Difference]: Without dead ends: 3194 [2020-09-15 00:48:04,975 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 [2020-09-15 00:48:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-15 00:48:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-15 00:48:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-15 00:48:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-15 00:48:05,098 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-15 00:48:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:05,100 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-15 00:48:05,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-15 00:48:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:05,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:05,101 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:05,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-15 00:48:05,102 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]=== [2020-09-15 00:48:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:05,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-15 00:48:05,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:05,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917725098] [2020-09-15 00:48:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:05,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917725098] [2020-09-15 00:48:05,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354776737] [2020-09-15 00:48:05,185 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 [2020-09-15 00:48:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:05,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:05,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:05,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:05,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:05,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260119281] [2020-09-15 00:48:05,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:05,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:05,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:05,343 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-15 00:48:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:05,767 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-15 00:48:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:05,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:48:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:05,800 INFO L225 Difference]: With dead ends: 4556 [2020-09-15 00:48:05,800 INFO L226 Difference]: Without dead ends: 4546 [2020-09-15 00:48:05,802 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 [2020-09-15 00:48:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-15 00:48:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-15 00:48:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-15 00:48:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-15 00:48:05,923 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-15 00:48:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:05,923 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-15 00:48:05,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-15 00:48:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:05,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:05,925 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:06,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-15 00:48:06,141 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]=== [2020-09-15 00:48:06,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:06,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-15 00:48:06,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:06,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826643647] [2020-09-15 00:48:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:06,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826643647] [2020-09-15 00:48:06,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:06,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:06,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373064806] [2020-09-15 00:48:06,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:06,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:06,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:06,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:06,218 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-15 00:48:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:06,531 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-15 00:48:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:06,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:48:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:06,550 INFO L225 Difference]: With dead ends: 4612 [2020-09-15 00:48:06,550 INFO L226 Difference]: Without dead ends: 4601 [2020-09-15 00:48:06,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:48:06,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-15 00:48:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-15 00:48:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-15 00:48:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-15 00:48:06,656 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-15 00:48:06,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:06,656 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-15 00:48:06,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-15 00:48:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:48:06,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:06,658 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:06,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-15 00:48:06,658 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]=== [2020-09-15 00:48:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:06,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-15 00:48:06,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:06,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921990966] [2020-09-15 00:48:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:06,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921990966] [2020-09-15 00:48:06,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:06,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:06,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389817858] [2020-09-15 00:48:06,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:06,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:06,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:06,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:06,736 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-15 00:48:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:06,879 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-15 00:48:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:06,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:48:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:06,893 INFO L225 Difference]: With dead ends: 3265 [2020-09-15 00:48:06,893 INFO L226 Difference]: Without dead ends: 3250 [2020-09-15 00:48:06,893 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 [2020-09-15 00:48:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-15 00:48:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-15 00:48:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-15 00:48:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-15 00:48:07,027 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-15 00:48:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:07,027 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-15 00:48:07,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-15 00:48:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:07,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:07,029 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:07,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-15 00:48:07,029 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]=== [2020-09-15 00:48:07,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-15 00:48:07,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:07,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084116461] [2020-09-15 00:48:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:07,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084116461] [2020-09-15 00:48:07,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256823652] [2020-09-15 00:48:07,122 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 [2020-09-15 00:48:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:07,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:07,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:07,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:07,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:07,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271662586] [2020-09-15 00:48:07,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:07,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:07,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:07,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:07,294 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-15 00:48:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:07,719 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-15 00:48:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:07,720 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:07,736 INFO L225 Difference]: With dead ends: 4825 [2020-09-15 00:48:07,736 INFO L226 Difference]: Without dead ends: 4813 [2020-09-15 00:48:07,737 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 [2020-09-15 00:48:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-15 00:48:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-15 00:48:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-15 00:48:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-15 00:48:07,848 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-15 00:48:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:07,849 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-15 00:48:07,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-15 00:48:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:07,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:07,851 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:08,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:08,066 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]=== [2020-09-15 00:48:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:08,066 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-15 00:48:08,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:08,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699545975] [2020-09-15 00:48:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:08,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699545975] [2020-09-15 00:48:08,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647783688] [2020-09-15 00:48:08,142 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 [2020-09-15 00:48:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:08,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:08,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:08,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:08,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:08,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564530968] [2020-09-15 00:48:08,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:08,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:08,297 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-15 00:48:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:08,809 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-15 00:48:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:08,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:08,830 INFO L225 Difference]: With dead ends: 4942 [2020-09-15 00:48:08,830 INFO L226 Difference]: Without dead ends: 4925 [2020-09-15 00:48:08,831 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 [2020-09-15 00:48:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-15 00:48:08,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-15 00:48:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-15 00:48:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-15 00:48:08,949 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-15 00:48:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:08,949 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-15 00:48:08,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-15 00:48:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:08,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:08,951 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:09,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:09,165 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]=== [2020-09-15 00:48:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:09,166 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-15 00:48:09,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:09,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744061980] [2020-09-15 00:48:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:09,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744061980] [2020-09-15 00:48:09,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:09,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:09,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468786684] [2020-09-15 00:48:09,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:09,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:09,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:09,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:09,266 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-15 00:48:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:09,553 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-15 00:48:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:09,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:09,565 INFO L225 Difference]: With dead ends: 4934 [2020-09-15 00:48:09,565 INFO L226 Difference]: Without dead ends: 4917 [2020-09-15 00:48:09,565 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 [2020-09-15 00:48:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-15 00:48:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-15 00:48:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-15 00:48:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-15 00:48:09,666 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-15 00:48:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:09,667 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-15 00:48:09,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-15 00:48:09,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:09,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:09,669 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:09,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-15 00:48:09,669 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]=== [2020-09-15 00:48:09,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:09,670 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-15 00:48:09,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:09,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455552490] [2020-09-15 00:48:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:09,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455552490] [2020-09-15 00:48:09,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:09,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:09,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245239195] [2020-09-15 00:48:09,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:09,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:09,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:09,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:09,756 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-15 00:48:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:10,065 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-15 00:48:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:10,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:10,077 INFO L225 Difference]: With dead ends: 4774 [2020-09-15 00:48:10,077 INFO L226 Difference]: Without dead ends: 4757 [2020-09-15 00:48:10,078 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 [2020-09-15 00:48:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-15 00:48:10,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-15 00:48:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-15 00:48:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-15 00:48:10,166 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-15 00:48:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:10,167 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-15 00:48:10,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:10,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-15 00:48:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:10,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:10,169 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:10,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-15 00:48:10,169 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]=== [2020-09-15 00:48:10,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-15 00:48:10,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:10,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452241517] [2020-09-15 00:48:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:10,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452241517] [2020-09-15 00:48:10,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27809014] [2020-09-15 00:48:10,345 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 [2020-09-15 00:48:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:10,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:10,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:10,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:10,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:10,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306339244] [2020-09-15 00:48:10,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:10,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:10,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:10,578 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-15 00:48:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:11,517 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-15 00:48:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:11,518 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:11,528 INFO L225 Difference]: With dead ends: 6025 [2020-09-15 00:48:11,528 INFO L226 Difference]: Without dead ends: 6017 [2020-09-15 00:48:11,529 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 [2020-09-15 00:48:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-15 00:48:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-15 00:48:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-15 00:48:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-15 00:48:11,610 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-15 00:48:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:11,610 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-15 00:48:11,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-15 00:48:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:11,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:11,612 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:11,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-15 00:48:11,827 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]=== [2020-09-15 00:48:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-15 00:48:11,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:11,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614681576] [2020-09-15 00:48:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:11,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614681576] [2020-09-15 00:48:11,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955591533] [2020-09-15 00:48:11,938 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 [2020-09-15 00:48:12,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:48:12,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:12,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:12,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:12,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:12,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:12,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972858065] [2020-09-15 00:48:12,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:12,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:12,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:12,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:12,154 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-15 00:48:12,497 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-09-15 00:48:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:13,223 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-15 00:48:13,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:13,223 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:13,233 INFO L225 Difference]: With dead ends: 5914 [2020-09-15 00:48:13,233 INFO L226 Difference]: Without dead ends: 5903 [2020-09-15 00:48:13,234 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 [2020-09-15 00:48:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-15 00:48:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-15 00:48:13,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-15 00:48:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-15 00:48:13,324 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-15 00:48:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:13,325 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-15 00:48:13,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-15 00:48:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:13,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:13,327 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:13,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:13,540 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]=== [2020-09-15 00:48:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:13,541 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-15 00:48:13,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:13,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260619045] [2020-09-15 00:48:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:13,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260619045] [2020-09-15 00:48:13,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761906574] [2020-09-15 00:48:13,651 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 [2020-09-15 00:48:13,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:48:13,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:13,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:13,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:13,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:13,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:13,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933526941] [2020-09-15 00:48:13,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:13,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:13,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:13,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:13,849 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-15 00:48:14,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:14,856 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-15 00:48:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:14,856 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:14,866 INFO L225 Difference]: With dead ends: 5907 [2020-09-15 00:48:14,866 INFO L226 Difference]: Without dead ends: 5899 [2020-09-15 00:48:14,867 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 [2020-09-15 00:48:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-15 00:48:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-15 00:48:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-15 00:48:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-15 00:48:14,942 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-15 00:48:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:14,942 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-15 00:48:14,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-15 00:48:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:14,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:14,944 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:15,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-15 00:48:15,158 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]=== [2020-09-15 00:48:15,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:15,159 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-15 00:48:15,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:15,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716318038] [2020-09-15 00:48:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:15,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716318038] [2020-09-15 00:48:15,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766820064] [2020-09-15 00:48:15,256 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 [2020-09-15 00:48:15,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:48:15,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:15,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:15,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:15,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:15,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:15,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950367705] [2020-09-15 00:48:15,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:15,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:15,479 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-15 00:48:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:16,451 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-15 00:48:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:16,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:16,461 INFO L225 Difference]: With dead ends: 5835 [2020-09-15 00:48:16,461 INFO L226 Difference]: Without dead ends: 5824 [2020-09-15 00:48:16,462 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 [2020-09-15 00:48:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-15 00:48:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-15 00:48:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-15 00:48:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-15 00:48:16,522 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-15 00:48:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:16,522 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-15 00:48:16,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-15 00:48:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:16,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:16,524 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:16,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-15 00:48:16,740 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]=== [2020-09-15 00:48:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:16,740 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-15 00:48:16,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:16,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419404404] [2020-09-15 00:48:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:16,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419404404] [2020-09-15 00:48:16,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:16,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:16,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120238251] [2020-09-15 00:48:16,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:16,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:16,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:16,840 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-15 00:48:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:17,720 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-15 00:48:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:17,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:17,729 INFO L225 Difference]: With dead ends: 5820 [2020-09-15 00:48:17,730 INFO L226 Difference]: Without dead ends: 5812 [2020-09-15 00:48:17,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:48:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-15 00:48:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-15 00:48:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-15 00:48:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-15 00:48:17,790 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-15 00:48:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:17,790 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-15 00:48:17,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-15 00:48:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:17,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:17,792 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:17,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-15 00:48:17,793 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]=== [2020-09-15 00:48:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:17,793 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-15 00:48:17,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:17,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502449736] [2020-09-15 00:48:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:17,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502449736] [2020-09-15 00:48:17,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:17,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:17,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122214925] [2020-09-15 00:48:17,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:17,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:17,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:17,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:17,893 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-15 00:48:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:18,694 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-15 00:48:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:18,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:18,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:18,704 INFO L225 Difference]: With dead ends: 5717 [2020-09-15 00:48:18,704 INFO L226 Difference]: Without dead ends: 5705 [2020-09-15 00:48:18,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:48:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-15 00:48:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-15 00:48:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-15 00:48:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-15 00:48:18,784 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-15 00:48:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:18,784 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-15 00:48:18,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-15 00:48:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:18,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:18,786 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:18,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-15 00:48:18,786 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]=== [2020-09-15 00:48:18,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:18,786 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-15 00:48:18,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:18,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101555467] [2020-09-15 00:48:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:48:18,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101555467] [2020-09-15 00:48:18,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:18,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:18,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077063431] [2020-09-15 00:48:18,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:18,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:18,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:18,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:18,861 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-15 00:48:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:18,962 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-15 00:48:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:18,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:48:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:18,970 INFO L225 Difference]: With dead ends: 2762 [2020-09-15 00:48:18,970 INFO L226 Difference]: Without dead ends: 2746 [2020-09-15 00:48:18,970 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 [2020-09-15 00:48:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-15 00:48:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-15 00:48:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-15 00:48:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-15 00:48:19,029 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-15 00:48:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:19,029 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-15 00:48:19,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-15 00:48:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-15 00:48:19,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:19,031 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:19,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-15 00:48:19,032 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]=== [2020-09-15 00:48:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:19,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-15 00:48:19,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:19,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322591783] [2020-09-15 00:48:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:19,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:19,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:19,064 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:48:19,064 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:48:19,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-15 00:48:19,065 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:48:19,065 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:48:19,065 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-15 00:48:19,077 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,079 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,079 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,093 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,093 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,095 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,095 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,095 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,095 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,095 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,097 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,097 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,097 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,097 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,098 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:19,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-15 00:48:19,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:48:19,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:48:19,112 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:48:19,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:48:19,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:48:19,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:48:19,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:48:19,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:48:19,114 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-15 00:48:19,114 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-15 00:48:19,129 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-15 00:48:19,130 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:48:19,131 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. [2020-09-15 00:48:19,135 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-15 00:48:19,149 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-15 00:48:19,149 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:48:19,150 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. [2020-09-15 00:48:19,154 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-15 00:48:19,155 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:48:21,161 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-15 00:48:21,404 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-09-15 00:48:21,655 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-15 00:48:21,746 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-15 00:48:21,746 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-15 00:48:21,746 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-15 00:48:22,178 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-15 00:48:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-15 00:48:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:48:22,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:22,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:48:22,179 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]=== [2020-09-15 00:48:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-15 00:48:22,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:22,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340441289] [2020-09-15 00:48:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:22,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340441289] [2020-09-15 00:48:22,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:22,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:48:22,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958405992] [2020-09-15 00:48:22,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:48:22,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:22,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:48:22,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:48:22,206 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-15 00:48:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:22,287 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-15 00:48:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:48:22,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:48:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:22,307 INFO L225 Difference]: With dead ends: 5844 [2020-09-15 00:48:22,307 INFO L226 Difference]: Without dead ends: 5479 [2020-09-15 00:48:22,309 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 [2020-09-15 00:48:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-15 00:48:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-15 00:48:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-15 00:48:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-15 00:48:22,477 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-15 00:48:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:22,477 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-15 00:48:22,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:48:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-15 00:48:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:48:22,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:22,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:22,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-15 00:48:22,478 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]=== [2020-09-15 00:48:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-15 00:48:22,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:22,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787570812] [2020-09-15 00:48:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:22,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787570812] [2020-09-15 00:48:22,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:22,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:22,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480321696] [2020-09-15 00:48:22,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:22,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:22,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:22,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:22,522 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-15 00:48:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:22,685 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-15 00:48:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:22,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:48:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:22,717 INFO L225 Difference]: With dead ends: 9673 [2020-09-15 00:48:22,717 INFO L226 Difference]: Without dead ends: 9666 [2020-09-15 00:48:22,717 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 [2020-09-15 00:48:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-15 00:48:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-15 00:48:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-15 00:48:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-15 00:48:22,920 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-15 00:48:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:22,920 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-15 00:48:22,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-15 00:48:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:48:22,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:22,921 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:22,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-15 00:48:22,921 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]=== [2020-09-15 00:48:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-15 00:48:22,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:22,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155347340] [2020-09-15 00:48:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:22,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155347340] [2020-09-15 00:48:22,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:22,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:22,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027630202] [2020-09-15 00:48:22,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:22,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:22,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:22,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:22,980 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-15 00:48:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:23,222 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-15 00:48:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:23,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:48:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:23,266 INFO L225 Difference]: With dead ends: 11081 [2020-09-15 00:48:23,266 INFO L226 Difference]: Without dead ends: 11068 [2020-09-15 00:48:23,268 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 [2020-09-15 00:48:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-15 00:48:24,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-15 00:48:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-15 00:48:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-15 00:48:24,470 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-15 00:48:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:24,471 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-15 00:48:24,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-15 00:48:24,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:24,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:24,471 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:24,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-15 00:48:24,472 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]=== [2020-09-15 00:48:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:24,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-15 00:48:24,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:24,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179138339] [2020-09-15 00:48:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:24,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179138339] [2020-09-15 00:48:24,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886107330] [2020-09-15 00:48:24,547 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 [2020-09-15 00:48:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:24,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:24,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:24,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:24,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:24,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983017782] [2020-09-15 00:48:24,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:24,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:24,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:24,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:24,717 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-15 00:48:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:25,159 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-15 00:48:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:25,160 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:48:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:25,198 INFO L225 Difference]: With dead ends: 16749 [2020-09-15 00:48:25,198 INFO L226 Difference]: Without dead ends: 16736 [2020-09-15 00:48:25,199 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 [2020-09-15 00:48:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-15 00:48:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-15 00:48:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-15 00:48:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-15 00:48:25,481 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-15 00:48:25,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:25,481 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-15 00:48:25,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-15 00:48:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:25,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:25,482 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:25,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:25,683 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]=== [2020-09-15 00:48:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:25,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-15 00:48:25,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:25,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145891572] [2020-09-15 00:48:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:25,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145891572] [2020-09-15 00:48:25,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:25,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:25,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124656273] [2020-09-15 00:48:25,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:25,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:25,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:25,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:25,751 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-15 00:48:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:26,304 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-15 00:48:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:26,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:48:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:26,345 INFO L225 Difference]: With dead ends: 17085 [2020-09-15 00:48:26,345 INFO L226 Difference]: Without dead ends: 17071 [2020-09-15 00:48:26,346 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 [2020-09-15 00:48:26,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-15 00:48:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-15 00:48:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-15 00:48:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-15 00:48:26,610 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-15 00:48:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:26,610 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-15 00:48:26,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-15 00:48:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:48:26,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:26,612 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:26,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-15 00:48:26,612 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]=== [2020-09-15 00:48:26,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:26,612 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-15 00:48:26,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:26,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950831219] [2020-09-15 00:48:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:26,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950831219] [2020-09-15 00:48:26,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:26,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:26,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903933484] [2020-09-15 00:48:26,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:26,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:26,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:26,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:26,682 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-15 00:48:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:26,850 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-15 00:48:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:26,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:48:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:26,881 INFO L225 Difference]: With dead ends: 12234 [2020-09-15 00:48:26,881 INFO L226 Difference]: Without dead ends: 12212 [2020-09-15 00:48:26,882 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 [2020-09-15 00:48:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-15 00:48:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-15 00:48:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-15 00:48:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-15 00:48:27,121 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-15 00:48:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:27,121 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-15 00:48:27,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-15 00:48:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:27,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:27,122 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:27,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-15 00:48:27,122 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]=== [2020-09-15 00:48:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-15 00:48:27,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:27,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137171761] [2020-09-15 00:48:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:48:27,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137171761] [2020-09-15 00:48:27,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063441944] [2020-09-15 00:48:27,200 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 [2020-09-15 00:48:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:27,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:27,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:48:27,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:27,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:27,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200346118] [2020-09-15 00:48:27,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:27,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:27,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:27,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:27,356 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-15 00:48:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:27,851 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-15 00:48:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:27,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:27,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:27,893 INFO L225 Difference]: With dead ends: 19016 [2020-09-15 00:48:27,893 INFO L226 Difference]: Without dead ends: 18998 [2020-09-15 00:48:27,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-15 00:48:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-15 00:48:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-15 00:48:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-15 00:48:28,200 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-15 00:48:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:28,200 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-15 00:48:28,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-15 00:48:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:28,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:28,201 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:28,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-15 00:48:28,408 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]=== [2020-09-15 00:48:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-15 00:48:28,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:28,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190786628] [2020-09-15 00:48:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:28,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190786628] [2020-09-15 00:48:28,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970513011] [2020-09-15 00:48:28,485 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 [2020-09-15 00:48:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:28,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:28,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:28,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:28,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:28,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651100110] [2020-09-15 00:48:28,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:28,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:28,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:28,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:28,628 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-15 00:48:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:29,091 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-15 00:48:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:29,092 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:29,170 INFO L225 Difference]: With dead ends: 19670 [2020-09-15 00:48:29,171 INFO L226 Difference]: Without dead ends: 19645 [2020-09-15 00:48:29,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:29,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-15 00:48:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-15 00:48:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-15 00:48:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-15 00:48:29,768 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-15 00:48:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:29,769 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-15 00:48:29,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-15 00:48:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:29,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:29,770 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:29,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-15 00:48:29,971 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]=== [2020-09-15 00:48:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:29,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-15 00:48:29,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:29,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304797380] [2020-09-15 00:48:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:30,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304797380] [2020-09-15 00:48:30,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:30,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:30,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618634014] [2020-09-15 00:48:30,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:30,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:30,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:30,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:30,043 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-15 00:48:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:30,587 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-15 00:48:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:30,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:30,661 INFO L225 Difference]: With dead ends: 19852 [2020-09-15 00:48:30,661 INFO L226 Difference]: Without dead ends: 19827 [2020-09-15 00:48:30,662 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 [2020-09-15 00:48:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-15 00:48:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-15 00:48:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-15 00:48:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-15 00:48:31,142 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-15 00:48:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:31,142 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-15 00:48:31,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-15 00:48:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:31,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:31,144 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:31,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-15 00:48:31,144 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]=== [2020-09-15 00:48:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:31,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-15 00:48:31,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:31,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966949856] [2020-09-15 00:48:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:31,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966949856] [2020-09-15 00:48:31,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:31,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:31,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217530401] [2020-09-15 00:48:31,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:31,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:31,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:31,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:31,214 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-15 00:48:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:31,622 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-15 00:48:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:31,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:31,663 INFO L225 Difference]: With dead ends: 19555 [2020-09-15 00:48:31,663 INFO L226 Difference]: Without dead ends: 19530 [2020-09-15 00:48:31,663 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 [2020-09-15 00:48:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-15 00:48:32,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-15 00:48:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-15 00:48:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-15 00:48:32,148 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-15 00:48:32,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:32,149 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-15 00:48:32,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:32,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-15 00:48:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:32,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:32,150 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:32,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-15 00:48:32,151 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]=== [2020-09-15 00:48:32,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:32,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-15 00:48:32,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:32,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998474771] [2020-09-15 00:48:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:32,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998474771] [2020-09-15 00:48:32,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172754414] [2020-09-15 00:48:32,254 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 [2020-09-15 00:48:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:32,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:32,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:48:32,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:32,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:32,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105902340] [2020-09-15 00:48:32,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:32,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:32,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:32,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:32,477 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-15 00:48:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:33,669 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-15 00:48:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:33,669 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:33,729 INFO L225 Difference]: With dead ends: 26969 [2020-09-15 00:48:33,730 INFO L226 Difference]: Without dead ends: 26957 [2020-09-15 00:48:33,730 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 [2020-09-15 00:48:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-15 00:48:34,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-15 00:48:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-15 00:48:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-15 00:48:34,133 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-15 00:48:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:34,133 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-15 00:48:34,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-15 00:48:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:34,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:34,134 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:34,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:34,335 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]=== [2020-09-15 00:48:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:34,336 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-15 00:48:34,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:34,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169572916] [2020-09-15 00:48:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:48:34,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169572916] [2020-09-15 00:48:34,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094523501] [2020-09-15 00:48:34,429 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 [2020-09-15 00:48:34,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:48:34,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:34,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:34,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:48:34,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:34,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:34,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424726888] [2020-09-15 00:48:34,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:34,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:34,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:34,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:34,661 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-15 00:48:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:35,896 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-15 00:48:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:35,897 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:35,954 INFO L225 Difference]: With dead ends: 26661 [2020-09-15 00:48:35,954 INFO L226 Difference]: Without dead ends: 26645 [2020-09-15 00:48:35,955 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 [2020-09-15 00:48:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-15 00:48:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-15 00:48:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-15 00:48:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-15 00:48:36,319 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-15 00:48:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:36,320 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-15 00:48:36,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-15 00:48:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:36,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:36,321 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:36,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-15 00:48:36,535 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]=== [2020-09-15 00:48:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:36,536 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-15 00:48:36,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:36,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242944640] [2020-09-15 00:48:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:36,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242944640] [2020-09-15 00:48:36,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155045503] [2020-09-15 00:48:36,629 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 [2020-09-15 00:48:36,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:48:36,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:36,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:36,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:36,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:36,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:36,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424657080] [2020-09-15 00:48:36,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:36,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:36,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:36,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:36,881 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-15 00:48:37,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:37,989 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-15 00:48:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:37,990 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:37,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:38,054 INFO L225 Difference]: With dead ends: 26686 [2020-09-15 00:48:38,055 INFO L226 Difference]: Without dead ends: 26674 [2020-09-15 00:48:38,055 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 [2020-09-15 00:48:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-15 00:48:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-15 00:48:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-15 00:48:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-15 00:48:38,584 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-15 00:48:38,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:38,584 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-15 00:48:38,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-15 00:48:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:38,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:38,586 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:38,787 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]=== [2020-09-15 00:48:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:38,787 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-15 00:48:38,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:38,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072114397] [2020-09-15 00:48:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:38,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072114397] [2020-09-15 00:48:38,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007938230] [2020-09-15 00:48:38,882 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 [2020-09-15 00:48:38,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:48:38,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:38,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:38,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:48:39,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:39,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:39,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392712174] [2020-09-15 00:48:39,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:39,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:39,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:39,115 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-15 00:48:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:40,315 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-15 00:48:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:40,316 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:40,381 INFO L225 Difference]: With dead ends: 26489 [2020-09-15 00:48:40,381 INFO L226 Difference]: Without dead ends: 26473 [2020-09-15 00:48:40,382 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 [2020-09-15 00:48:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-15 00:48:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-15 00:48:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-15 00:48:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-15 00:48:40,742 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-15 00:48:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:40,742 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-15 00:48:40,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-15 00:48:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:40,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:40,743 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:40,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-15 00:48:40,944 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]=== [2020-09-15 00:48:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-15 00:48:40,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:40,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071158606] [2020-09-15 00:48:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:48:41,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071158606] [2020-09-15 00:48:41,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:41,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:41,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434535149] [2020-09-15 00:48:41,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:41,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:41,008 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-15 00:48:41,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:41,192 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-15 00:48:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:41,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:48:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:41,231 INFO L225 Difference]: With dead ends: 13251 [2020-09-15 00:48:41,231 INFO L226 Difference]: Without dead ends: 13220 [2020-09-15 00:48:41,231 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 [2020-09-15 00:48:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-15 00:48:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-15 00:48:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-15 00:48:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-15 00:48:41,653 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-15 00:48:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:41,654 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-15 00:48:41,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-15 00:48:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:41,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:41,656 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:41,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-15 00:48:41,656 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]=== [2020-09-15 00:48:41,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:41,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-15 00:48:41,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:41,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734756002] [2020-09-15 00:48:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:41,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734756002] [2020-09-15 00:48:41,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:41,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:41,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792882194] [2020-09-15 00:48:41,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:41,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:41,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:41,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:41,752 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-15 00:48:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:42,724 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-15 00:48:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:42,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:42,788 INFO L225 Difference]: With dead ends: 29788 [2020-09-15 00:48:42,788 INFO L226 Difference]: Without dead ends: 29770 [2020-09-15 00:48:42,789 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 [2020-09-15 00:48:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-15 00:48:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-15 00:48:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-15 00:48:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-15 00:48:43,205 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-15 00:48:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:43,206 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-15 00:48:43,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-15 00:48:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:43,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:43,208 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:43,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-15 00:48:43,208 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]=== [2020-09-15 00:48:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:43,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-15 00:48:43,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:43,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88417855] [2020-09-15 00:48:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:48:43,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88417855] [2020-09-15 00:48:43,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:43,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:43,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919598615] [2020-09-15 00:48:43,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:43,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:43,308 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-15 00:48:44,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:44,346 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-15 00:48:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:44,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:44,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:44,417 INFO L225 Difference]: With dead ends: 29379 [2020-09-15 00:48:44,417 INFO L226 Difference]: Without dead ends: 29356 [2020-09-15 00:48:44,417 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 [2020-09-15 00:48:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-15 00:48:44,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-15 00:48:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-15 00:48:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-15 00:48:45,001 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-15 00:48:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:45,001 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-15 00:48:45,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-15 00:48:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:45,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:45,003 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:45,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-15 00:48:45,003 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]=== [2020-09-15 00:48:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-15 00:48:45,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:45,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795911689] [2020-09-15 00:48:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:45,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795911689] [2020-09-15 00:48:45,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856027267] [2020-09-15 00:48:45,086 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 [2020-09-15 00:48:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:45,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:45,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:45,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:45,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:45,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421535397] [2020-09-15 00:48:45,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:45,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:45,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:45,298 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-15 00:48:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:45,887 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-15 00:48:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:45,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:48:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:45,952 INFO L225 Difference]: With dead ends: 19727 [2020-09-15 00:48:45,952 INFO L226 Difference]: Without dead ends: 19703 [2020-09-15 00:48:45,952 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 [2020-09-15 00:48:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-15 00:48:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-15 00:48:46,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-15 00:48:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-15 00:48:46,274 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-15 00:48:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:46,274 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-15 00:48:46,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-15 00:48:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:46,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:46,276 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:46,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-15 00:48:46,484 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]=== [2020-09-15 00:48:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:46,484 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-15 00:48:46,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:46,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845215126] [2020-09-15 00:48:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:48:46,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845215126] [2020-09-15 00:48:46,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952666971] [2020-09-15 00:48:46,562 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 [2020-09-15 00:48:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:46,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:46,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:48:46,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:46,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:46,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137462800] [2020-09-15 00:48:46,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:46,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:46,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:46,747 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-15 00:48:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:47,193 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-15 00:48:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:47,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:48:47,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:47,244 INFO L225 Difference]: With dead ends: 20694 [2020-09-15 00:48:47,244 INFO L226 Difference]: Without dead ends: 20666 [2020-09-15 00:48:47,244 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 [2020-09-15 00:48:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-15 00:48:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-15 00:48:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-15 00:48:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-15 00:48:47,594 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-15 00:48:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:47,594 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-15 00:48:47,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-15 00:48:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:47,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:47,597 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:47,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:47,798 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]=== [2020-09-15 00:48:47,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:47,798 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-15 00:48:47,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:47,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207765215] [2020-09-15 00:48:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:47,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207765215] [2020-09-15 00:48:47,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241226622] [2020-09-15 00:48:47,884 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 [2020-09-15 00:48:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:48,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:48,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:48,149 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-15 00:48:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:48,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:48,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:48,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893640292] [2020-09-15 00:48:48,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:48,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:48,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:48,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:48,201 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-15 00:48:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:48,712 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-15 00:48:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:48,712 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:48:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:48,759 INFO L225 Difference]: With dead ends: 21396 [2020-09-15 00:48:48,759 INFO L226 Difference]: Without dead ends: 21359 [2020-09-15 00:48:48,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-15 00:48:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-15 00:48:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-15 00:48:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-15 00:48:49,092 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-15 00:48:49,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:49,092 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-15 00:48:49,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-15 00:48:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:49,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:49,094 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:49,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-15 00:48:49,295 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]=== [2020-09-15 00:48:49,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:49,296 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-15 00:48:49,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:49,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929140212] [2020-09-15 00:48:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:48:49,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929140212] [2020-09-15 00:48:49,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:49,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:49,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051000103] [2020-09-15 00:48:49,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:49,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:49,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:49,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:49,379 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-15 00:48:49,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:49,827 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-15 00:48:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:49,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:48:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:49,871 INFO L225 Difference]: With dead ends: 21489 [2020-09-15 00:48:49,871 INFO L226 Difference]: Without dead ends: 21452 [2020-09-15 00:48:49,871 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 [2020-09-15 00:48:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-15 00:48:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-15 00:48:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-15 00:48:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-15 00:48:50,205 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-15 00:48:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:50,205 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-15 00:48:50,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-15 00:48:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:50,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:50,207 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:50,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-15 00:48:50,207 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]=== [2020-09-15 00:48:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-15 00:48:50,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:50,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753052972] [2020-09-15 00:48:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:48:50,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753052972] [2020-09-15 00:48:50,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:50,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:50,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986763924] [2020-09-15 00:48:50,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:50,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:50,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:50,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:50,284 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-15 00:48:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:50,740 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-15 00:48:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:50,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:48:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:50,788 INFO L225 Difference]: With dead ends: 21198 [2020-09-15 00:48:50,788 INFO L226 Difference]: Without dead ends: 21161 [2020-09-15 00:48:50,789 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 [2020-09-15 00:48:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-15 00:48:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-15 00:48:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-15 00:48:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-15 00:48:51,353 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-15 00:48:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:51,354 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-15 00:48:51,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-15 00:48:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:51,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:51,356 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:51,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-15 00:48:51,356 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]=== [2020-09-15 00:48:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:51,356 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-15 00:48:51,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:51,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719713847] [2020-09-15 00:48:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:48:51,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719713847] [2020-09-15 00:48:51,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:51,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:51,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223851077] [2020-09-15 00:48:51,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:51,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:51,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:51,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:51,440 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-15 00:48:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:51,891 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-15 00:48:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:51,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:48:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:51,942 INFO L225 Difference]: With dead ends: 21067 [2020-09-15 00:48:51,943 INFO L226 Difference]: Without dead ends: 21030 [2020-09-15 00:48:51,943 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 [2020-09-15 00:48:52,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-15 00:48:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-15 00:48:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-15 00:48:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-15 00:48:52,275 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-15 00:48:52,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:52,275 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-15 00:48:52,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-15 00:48:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:48:52,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:52,278 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:52,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-15 00:48:52,278 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]=== [2020-09-15 00:48:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:52,279 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-15 00:48:52,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:52,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301607405] [2020-09-15 00:48:52,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:52,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301607405] [2020-09-15 00:48:52,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405190709] [2020-09-15 00:48:52,383 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 [2020-09-15 00:48:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:52,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:52,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:52,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:52,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:52,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434145275] [2020-09-15 00:48:52,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:52,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:52,619 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-15 00:48:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:53,948 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-15 00:48:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:53,948 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:48:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:54,014 INFO L225 Difference]: With dead ends: 30145 [2020-09-15 00:48:54,014 INFO L226 Difference]: Without dead ends: 30125 [2020-09-15 00:48:54,015 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 [2020-09-15 00:48:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-15 00:48:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-15 00:48:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-15 00:48:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-15 00:48:54,463 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-15 00:48:54,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:54,463 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-15 00:48:54,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-15 00:48:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:48:54,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:54,466 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:54,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-15 00:48:54,667 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]=== [2020-09-15 00:48:54,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:54,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-15 00:48:54,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:54,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140156188] [2020-09-15 00:48:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:54,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140156188] [2020-09-15 00:48:54,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820726143] [2020-09-15 00:48:54,779 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 [2020-09-15 00:48:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:54,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:54,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:48:55,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:55,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:55,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745124329] [2020-09-15 00:48:55,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:55,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:55,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:55,002 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-15 00:48:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:56,256 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-15 00:48:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:56,257 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:48:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:56,322 INFO L225 Difference]: With dead ends: 29696 [2020-09-15 00:48:56,322 INFO L226 Difference]: Without dead ends: 29676 [2020-09-15 00:48:56,322 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 [2020-09-15 00:48:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-15 00:48:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-15 00:48:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-15 00:48:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-15 00:48:56,716 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-15 00:48:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:56,717 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-15 00:48:56,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-15 00:48:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:48:56,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:56,720 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:56,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-15 00:48:56,921 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]=== [2020-09-15 00:48:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-15 00:48:56,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:56,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211004034] [2020-09-15 00:48:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:57,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211004034] [2020-09-15 00:48:57,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478885705] [2020-09-15 00:48:57,023 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 [2020-09-15 00:48:57,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:48:57,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:57,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:57,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:57,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:57,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:57,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038955494] [2020-09-15 00:48:57,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:57,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:57,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:57,259 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-15 00:48:58,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:58,423 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-15 00:48:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:58,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:48:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:58,486 INFO L225 Difference]: With dead ends: 29267 [2020-09-15 00:48:58,487 INFO L226 Difference]: Without dead ends: 29245 [2020-09-15 00:48:58,487 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 [2020-09-15 00:48:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-15 00:48:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-15 00:48:58,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-15 00:48:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-15 00:48:58,904 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-15 00:48:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:58,905 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-15 00:48:58,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-15 00:48:58,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:48:58,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:58,908 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:59,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-15 00:48:59,108 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]=== [2020-09-15 00:48:59,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:59,109 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-15 00:48:59,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:59,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059867360] [2020-09-15 00:48:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:59,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059867360] [2020-09-15 00:48:59,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598614495] [2020-09-15 00:48:59,209 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 [2020-09-15 00:48:59,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:48:59,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:59,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:59,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:48:59,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:59,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:59,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806330945] [2020-09-15 00:48:59,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:59,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:59,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:59,437 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-15 00:49:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:00,772 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-15 00:49:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:00,772 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:00,834 INFO L225 Difference]: With dead ends: 28920 [2020-09-15 00:49:00,834 INFO L226 Difference]: Without dead ends: 28898 [2020-09-15 00:49:00,835 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 [2020-09-15 00:49:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-15 00:49:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-15 00:49:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-15 00:49:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-15 00:49:01,371 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-15 00:49:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:01,371 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-15 00:49:01,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-15 00:49:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:01,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:01,374 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:01,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:01,575 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]=== [2020-09-15 00:49:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-15 00:49:01,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:01,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489846926] [2020-09-15 00:49:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-15 00:49:01,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489846926] [2020-09-15 00:49:01,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695265103] [2020-09-15 00:49:01,675 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 [2020-09-15 00:49:01,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:49:01,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:01,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:01,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-15 00:49:01,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:01,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:01,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612929] [2020-09-15 00:49:01,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:01,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:01,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:01,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:01,916 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-15 00:49:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:03,015 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-15 00:49:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:03,016 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:03,077 INFO L225 Difference]: With dead ends: 29038 [2020-09-15 00:49:03,078 INFO L226 Difference]: Without dead ends: 29018 [2020-09-15 00:49:03,078 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 [2020-09-15 00:49:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-15 00:49:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-15 00:49:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-15 00:49:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-15 00:49:03,498 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-15 00:49:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:03,498 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-15 00:49:03,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:03,498 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-15 00:49:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:03,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:03,501 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:03,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-15 00:49:03,702 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]=== [2020-09-15 00:49:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-15 00:49:03,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:03,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655470068] [2020-09-15 00:49:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:49:03,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655470068] [2020-09-15 00:49:03,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640662113] [2020-09-15 00:49:03,810 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 [2020-09-15 00:49:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:03,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:03,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:49:04,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:04,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:04,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101133547] [2020-09-15 00:49:04,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:04,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:04,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:04,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:04,028 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-15 00:49:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:05,349 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-15 00:49:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:05,350 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:05,418 INFO L225 Difference]: With dead ends: 29417 [2020-09-15 00:49:05,418 INFO L226 Difference]: Without dead ends: 29397 [2020-09-15 00:49:05,418 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 [2020-09-15 00:49:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-15 00:49:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-15 00:49:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-15 00:49:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-15 00:49:05,851 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-15 00:49:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:05,851 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-15 00:49:05,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-15 00:49:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:05,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:05,855 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:06,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:06,056 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]=== [2020-09-15 00:49:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-15 00:49:06,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:06,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346563230] [2020-09-15 00:49:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:49:06,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346563230] [2020-09-15 00:49:06,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010787422] [2020-09-15 00:49:06,160 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 [2020-09-15 00:49:06,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:49:06,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:06,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:06,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:49:06,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:06,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:06,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009580501] [2020-09-15 00:49:06,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:06,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:06,506 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-15 00:49:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:07,681 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-15 00:49:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:07,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:07,746 INFO L225 Difference]: With dead ends: 29064 [2020-09-15 00:49:07,746 INFO L226 Difference]: Without dead ends: 29037 [2020-09-15 00:49:07,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:07,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-15 00:49:08,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-15 00:49:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-15 00:49:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-15 00:49:08,149 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-15 00:49:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:08,149 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-15 00:49:08,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:08,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-15 00:49:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:08,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:08,152 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:08,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-15 00:49:08,353 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]=== [2020-09-15 00:49:08,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:08,354 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-15 00:49:08,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:08,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843547540] [2020-09-15 00:49:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:49:08,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843547540] [2020-09-15 00:49:08,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529326616] [2020-09-15 00:49:08,455 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 [2020-09-15 00:49:08,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:49:08,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:08,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:08,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:49:08,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:08,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:08,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278520025] [2020-09-15 00:49:08,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:08,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:08,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:08,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:08,683 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-15 00:49:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:09,875 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-15 00:49:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:09,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:09,947 INFO L225 Difference]: With dead ends: 28523 [2020-09-15 00:49:09,947 INFO L226 Difference]: Without dead ends: 28501 [2020-09-15 00:49:09,947 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 [2020-09-15 00:49:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-15 00:49:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-15 00:49:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-15 00:49:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-15 00:49:10,353 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-15 00:49:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:10,353 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-15 00:49:10,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-15 00:49:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:10,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:10,358 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:10,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:10,559 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]=== [2020-09-15 00:49:10,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-15 00:49:10,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:10,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832759612] [2020-09-15 00:49:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:10,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832759612] [2020-09-15 00:49:10,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684025578] [2020-09-15 00:49:10,652 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 [2020-09-15 00:49:10,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:49:10,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:10,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:10,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:10,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:10,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:10,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964573990] [2020-09-15 00:49:10,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:10,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:10,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:10,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:10,864 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-15 00:49:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:11,947 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-15 00:49:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:11,948 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:12,012 INFO L225 Difference]: With dead ends: 28636 [2020-09-15 00:49:12,012 INFO L226 Difference]: Without dead ends: 28616 [2020-09-15 00:49:12,013 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 [2020-09-15 00:49:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-15 00:49:12,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-15 00:49:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-15 00:49:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-15 00:49:12,560 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-15 00:49:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:12,560 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-15 00:49:12,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-15 00:49:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:12,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:12,564 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:12,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-15 00:49:12,771 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]=== [2020-09-15 00:49:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:12,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-15 00:49:12,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:12,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076943980] [2020-09-15 00:49:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:12,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076943980] [2020-09-15 00:49:12,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597000334] [2020-09-15 00:49:12,878 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 [2020-09-15 00:49:12,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:49:12,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:12,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:12,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:13,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:13,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:13,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223248588] [2020-09-15 00:49:13,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:13,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:13,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:13,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:13,118 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-15 00:49:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:14,221 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-15 00:49:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:14,222 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:14,282 INFO L225 Difference]: With dead ends: 28297 [2020-09-15 00:49:14,283 INFO L226 Difference]: Without dead ends: 28277 [2020-09-15 00:49:14,283 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 [2020-09-15 00:49:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-15 00:49:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-15 00:49:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-15 00:49:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-15 00:49:14,673 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-15 00:49:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:14,673 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-15 00:49:14,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-15 00:49:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:14,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:14,676 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:14,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:14,877 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]=== [2020-09-15 00:49:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:14,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-15 00:49:14,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:14,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553374265] [2020-09-15 00:49:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:14,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553374265] [2020-09-15 00:49:14,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111751503] [2020-09-15 00:49:14,988 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 [2020-09-15 00:49:15,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:49:15,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:15,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:15,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:15,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:15,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:15,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457141080] [2020-09-15 00:49:15,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:15,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:15,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:15,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:15,220 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-15 00:49:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:16,508 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-15 00:49:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:16,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:16,571 INFO L225 Difference]: With dead ends: 28565 [2020-09-15 00:49:16,571 INFO L226 Difference]: Without dead ends: 28538 [2020-09-15 00:49:16,572 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 [2020-09-15 00:49:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-15 00:49:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-15 00:49:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-15 00:49:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-15 00:49:16,965 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-15 00:49:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:16,965 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-15 00:49:16,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-15 00:49:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:16,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:16,968 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:17,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-15 00:49:17,176 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]=== [2020-09-15 00:49:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:17,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-15 00:49:17,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:17,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047503279] [2020-09-15 00:49:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:17,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047503279] [2020-09-15 00:49:17,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385732834] [2020-09-15 00:49:17,276 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 [2020-09-15 00:49:17,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:49:17,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:17,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:17,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:49:17,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:17,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:17,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355885327] [2020-09-15 00:49:17,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:17,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:17,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:17,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:17,534 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-15 00:49:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:18,729 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-15 00:49:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:18,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:18,792 INFO L225 Difference]: With dead ends: 28213 [2020-09-15 00:49:18,792 INFO L226 Difference]: Without dead ends: 28186 [2020-09-15 00:49:18,792 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 [2020-09-15 00:49:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-15 00:49:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-15 00:49:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-15 00:49:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-15 00:49:19,284 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-15 00:49:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:19,285 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-15 00:49:19,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-15 00:49:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:19,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:19,288 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:19,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:19,489 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]=== [2020-09-15 00:49:19,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:19,489 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-15 00:49:19,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:19,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474120142] [2020-09-15 00:49:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:49:19,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474120142] [2020-09-15 00:49:19,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:19,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:19,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78035672] [2020-09-15 00:49:19,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:19,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:19,585 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-15 00:49:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:20,692 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-15 00:49:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:20,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:20,759 INFO L225 Difference]: With dead ends: 28226 [2020-09-15 00:49:20,759 INFO L226 Difference]: Without dead ends: 28206 [2020-09-15 00:49:20,759 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 [2020-09-15 00:49:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-15 00:49:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-15 00:49:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-15 00:49:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-15 00:49:21,146 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-15 00:49:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:21,147 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-15 00:49:21,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-15 00:49:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:21,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:21,151 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:21,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-15 00:49:21,151 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]=== [2020-09-15 00:49:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:21,151 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-15 00:49:21,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:21,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279623048] [2020-09-15 00:49:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:49:21,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279623048] [2020-09-15 00:49:21,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:21,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:21,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524951190] [2020-09-15 00:49:21,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:21,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:21,255 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-15 00:49:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:22,280 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-15 00:49:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:22,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:22,341 INFO L225 Difference]: With dead ends: 27801 [2020-09-15 00:49:22,341 INFO L226 Difference]: Without dead ends: 27781 [2020-09-15 00:49:22,342 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 [2020-09-15 00:49:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-15 00:49:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-15 00:49:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-15 00:49:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-15 00:49:22,726 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-15 00:49:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:22,726 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-15 00:49:22,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-15 00:49:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:22,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:22,729 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:22,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-15 00:49:22,729 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]=== [2020-09-15 00:49:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:22,730 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-15 00:49:22,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:22,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676882715] [2020-09-15 00:49:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:49:22,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676882715] [2020-09-15 00:49:22,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:22,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:22,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384571454] [2020-09-15 00:49:22,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:22,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:22,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:22,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:22,831 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-15 00:49:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:24,040 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-15 00:49:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:24,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:24,137 INFO L225 Difference]: With dead ends: 27548 [2020-09-15 00:49:24,138 INFO L226 Difference]: Without dead ends: 27521 [2020-09-15 00:49:24,138 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 [2020-09-15 00:49:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-15 00:49:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-15 00:49:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-15 00:49:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-15 00:49:24,542 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-15 00:49:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:24,542 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-15 00:49:24,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-15 00:49:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:24,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:24,545 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:24,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-15 00:49:24,545 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]=== [2020-09-15 00:49:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-15 00:49:24,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:24,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844562870] [2020-09-15 00:49:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:24,768 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-09-15 00:49:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:49:24,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844562870] [2020-09-15 00:49:24,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:24,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:24,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136030581] [2020-09-15 00:49:24,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:24,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:24,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:24,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:24,771 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-15 00:49:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:25,839 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-15 00:49:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:25,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:25,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:25,900 INFO L225 Difference]: With dead ends: 27167 [2020-09-15 00:49:25,900 INFO L226 Difference]: Without dead ends: 27147 [2020-09-15 00:49:25,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-15 00:49:26,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-15 00:49:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-15 00:49:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-15 00:49:26,275 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-15 00:49:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:26,275 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-15 00:49:26,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-15 00:49:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:26,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:26,278 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:26,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-15 00:49:26,278 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]=== [2020-09-15 00:49:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:26,279 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-15 00:49:26,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:26,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192765331] [2020-09-15 00:49:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:49:26,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192765331] [2020-09-15 00:49:26,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:26,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:26,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755287928] [2020-09-15 00:49:26,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:26,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:26,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:26,385 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-15 00:49:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:27,469 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-15 00:49:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:27,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:27,527 INFO L225 Difference]: With dead ends: 26955 [2020-09-15 00:49:27,528 INFO L226 Difference]: Without dead ends: 26928 [2020-09-15 00:49:27,528 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 [2020-09-15 00:49:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-15 00:49:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-15 00:49:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-15 00:49:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-15 00:49:27,889 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-15 00:49:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:27,890 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-15 00:49:27,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-15 00:49:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:27,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:27,893 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:27,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-15 00:49:27,893 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]=== [2020-09-15 00:49:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:27,893 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-15 00:49:27,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:27,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718424082] [2020-09-15 00:49:27,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:49:27,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718424082] [2020-09-15 00:49:27,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:27,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:27,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684323709] [2020-09-15 00:49:27,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:27,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:27,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:27,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:27,997 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-15 00:49:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:29,396 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-15 00:49:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:29,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:29,495 INFO L225 Difference]: With dead ends: 26632 [2020-09-15 00:49:29,495 INFO L226 Difference]: Without dead ends: 26605 [2020-09-15 00:49:29,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-15 00:49:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-15 00:49:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-15 00:49:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-15 00:49:29,955 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-15 00:49:29,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:29,955 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-15 00:49:29,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:29,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-15 00:49:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:29,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:29,958 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:29,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-15 00:49:29,958 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]=== [2020-09-15 00:49:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:29,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-15 00:49:29,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:29,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073981473] [2020-09-15 00:49:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:49:30,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073981473] [2020-09-15 00:49:30,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:30,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:30,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792962937] [2020-09-15 00:49:30,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:30,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:30,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:30,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:30,034 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-15 00:49:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:30,213 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-15 00:49:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:30,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:49:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:30,240 INFO L225 Difference]: With dead ends: 11919 [2020-09-15 00:49:30,240 INFO L226 Difference]: Without dead ends: 11887 [2020-09-15 00:49:30,240 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 [2020-09-15 00:49:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-15 00:49:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-15 00:49:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-15 00:49:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-15 00:49:30,479 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-15 00:49:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:30,479 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-15 00:49:30,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-15 00:49:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-15 00:49:30,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:30,484 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:30,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-15 00:49:30,484 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]=== [2020-09-15 00:49:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-15 00:49:30,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:30,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078642583] [2020-09-15 00:49:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:49:30,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:49:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:49:30,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:49:30,517 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:49:30,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:49:30,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-15 00:49:30,517 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:49:30,520 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:49:30,520 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-15 00:49:30,543 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,543 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,543 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,543 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,546 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,546 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,548 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,556 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,556 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,558 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,558 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,558 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,559 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,559 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,562 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,562 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,563 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,564 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,564 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,564 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,564 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,566 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,567 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,571 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,571 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:30,582 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-15 00:49:30,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:49:30,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:49:30,583 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:49:30,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:49:30,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:49:30,583 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:49:30,583 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:49:30,583 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:49:30,585 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-15 00:49:30,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-15 00:49:30,602 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-15 00:49:30,602 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:49:30,604 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. [2020-09-15 00:49:30,609 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-15 00:49:30,626 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-15 00:49:30,627 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:49:30,628 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. [2020-09-15 00:49:30,633 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-15 00:49:30,634 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:49:33,109 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-15 00:49:33,505 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-15 00:49:33,686 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 00:49:33,703 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-15 00:49:33,703 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-15 00:49:33,703 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-15 00:49:35,338 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-15 00:49:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-15 00:49:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:49:35,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:35,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:49:35,339 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]=== [2020-09-15 00:49:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:35,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-15 00:49:35,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:35,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148299335] [2020-09-15 00:49:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:49:35,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148299335] [2020-09-15 00:49:35,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:35,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:49:35,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653529629] [2020-09-15 00:49:35,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:49:35,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:35,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:49:35,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:49:35,361 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-15 00:49:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:35,537 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-15 00:49:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:49:35,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:49:35,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:35,588 INFO L225 Difference]: With dead ends: 17885 [2020-09-15 00:49:35,588 INFO L226 Difference]: Without dead ends: 16791 [2020-09-15 00:49:35,589 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 [2020-09-15 00:49:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-15 00:49:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-15 00:49:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-15 00:49:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-15 00:49:36,346 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-15 00:49:36,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:36,346 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-15 00:49:36,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:49:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-15 00:49:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:49:36,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:36,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:36,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-15 00:49:36,347 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]=== [2020-09-15 00:49:36,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:36,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-15 00:49:36,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:36,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970436923] [2020-09-15 00:49:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:49:36,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970436923] [2020-09-15 00:49:36,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:36,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:36,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000426990] [2020-09-15 00:49:36,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:36,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:36,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:36,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:36,394 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-15 00:49:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:36,680 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-15 00:49:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:36,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:49:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:36,772 INFO L225 Difference]: With dead ends: 30985 [2020-09-15 00:49:36,773 INFO L226 Difference]: Without dead ends: 30977 [2020-09-15 00:49:36,773 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 [2020-09-15 00:49:39,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-15 00:49:39,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-15 00:49:39,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-15 00:49:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-15 00:49:39,502 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-15 00:49:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:39,502 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-15 00:49:39,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-15 00:49:39,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:49:39,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:39,503 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:39,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-15 00:49:39,503 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]=== [2020-09-15 00:49:39,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:39,503 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-15 00:49:39,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:39,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207918857] [2020-09-15 00:49:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:49:39,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207918857] [2020-09-15 00:49:39,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:39,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:39,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484835608] [2020-09-15 00:49:39,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:39,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:39,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:39,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:39,553 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-15 00:49:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:39,880 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-15 00:49:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:39,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:49:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:39,986 INFO L225 Difference]: With dead ends: 36296 [2020-09-15 00:49:39,986 INFO L226 Difference]: Without dead ends: 36280 [2020-09-15 00:49:39,986 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 [2020-09-15 00:49:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-15 00:49:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-15 00:49:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-15 00:49:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-15 00:49:41,193 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-15 00:49:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:41,193 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-15 00:49:41,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-15 00:49:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:49:41,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:41,194 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:41,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-15 00:49:41,194 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]=== [2020-09-15 00:49:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:41,194 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-15 00:49:41,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:41,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239869715] [2020-09-15 00:49:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:49:41,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239869715] [2020-09-15 00:49:41,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774549143] [2020-09-15 00:49:41,275 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 [2020-09-15 00:49:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:41,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:49:41,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:49:41,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:41,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:49:41,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904229230] [2020-09-15 00:49:41,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:49:41,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:41,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:49:41,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:49:41,487 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-15 00:49:42,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:42,260 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-15 00:49:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:49:42,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:49:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:42,416 INFO L225 Difference]: With dead ends: 56720 [2020-09-15 00:49:42,416 INFO L226 Difference]: Without dead ends: 56704 [2020-09-15 00:49:42,417 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 [2020-09-15 00:49:45,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-15 00:49:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-15 00:49:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-15 00:49:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-15 00:49:46,103 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-15 00:49:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:46,103 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-15 00:49:46,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:49:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-15 00:49:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:49:46,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:46,104 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:46,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-15 00:49:46,306 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]=== [2020-09-15 00:49:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:46,307 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-15 00:49:46,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:46,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199158947] [2020-09-15 00:49:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:49:46,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199158947] [2020-09-15 00:49:46,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:46,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:49:46,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898299482] [2020-09-15 00:49:46,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:49:46,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:46,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:49:46,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:49:46,384 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-15 00:49:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:47,101 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-15 00:49:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:49:47,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:49:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:47,261 INFO L225 Difference]: With dead ends: 58078 [2020-09-15 00:49:47,261 INFO L226 Difference]: Without dead ends: 58061 [2020-09-15 00:49:47,262 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 [2020-09-15 00:49:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-15 00:49:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-15 00:49:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-15 00:49:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-15 00:49:48,676 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-15 00:49:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:48,677 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-15 00:49:48,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:49:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-15 00:49:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:49:48,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:48,677 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:48,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-15 00:49:48,678 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]=== [2020-09-15 00:49:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-15 00:49:48,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:48,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776203311] [2020-09-15 00:49:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:49:48,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776203311] [2020-09-15 00:49:48,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:48,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:48,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118018543] [2020-09-15 00:49:48,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:48,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:48,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:48,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:48,732 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-15 00:49:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:49,644 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-15 00:49:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:49,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:49:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:49,759 INFO L225 Difference]: With dead ends: 41885 [2020-09-15 00:49:49,759 INFO L226 Difference]: Without dead ends: 41856 [2020-09-15 00:49:49,759 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 [2020-09-15 00:49:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-15 00:49:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-15 00:49:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-15 00:49:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-15 00:49:51,074 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-15 00:49:51,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:51,074 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-15 00:49:51,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-15 00:49:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:49:51,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:51,075 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:51,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-15 00:49:51,075 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]=== [2020-09-15 00:49:51,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:51,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-15 00:49:51,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:51,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074538102] [2020-09-15 00:49:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:49:51,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074538102] [2020-09-15 00:49:51,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912185664] [2020-09-15 00:49:51,143 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 [2020-09-15 00:49:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:51,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:49:51,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:49:51,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:51,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:49:51,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242757183] [2020-09-15 00:49:51,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:49:51,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:51,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:49:51,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:49:51,324 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-15 00:49:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:52,089 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-15 00:49:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:49:52,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:49:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:52,340 INFO L225 Difference]: With dead ends: 66831 [2020-09-15 00:49:52,340 INFO L226 Difference]: Without dead ends: 66807 [2020-09-15 00:49:52,340 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 [2020-09-15 00:49:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-15 00:49:54,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-15 00:49:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-15 00:49:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-15 00:49:54,720 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-15 00:49:54,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:54,720 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-15 00:49:54,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:49:54,720 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-15 00:49:54,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:49:54,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:54,721 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:54,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-15 00:49:54,922 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]=== [2020-09-15 00:49:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:54,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-15 00:49:54,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:54,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846621666] [2020-09-15 00:49:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:49:54,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846621666] [2020-09-15 00:49:54,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261260338] [2020-09-15 00:49:54,987 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 [2020-09-15 00:49:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:55,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:49:55,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:49:55,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:55,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:49:55,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787739136] [2020-09-15 00:49:55,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:49:55,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:55,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:49:55,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:49:55,176 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-15 00:49:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:55,996 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-15 00:49:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:49:55,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:49:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:56,207 INFO L225 Difference]: With dead ends: 69484 [2020-09-15 00:49:56,207 INFO L226 Difference]: Without dead ends: 69451 [2020-09-15 00:49:56,208 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 [2020-09-15 00:49:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-15 00:49:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-15 00:49:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-15 00:49:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-15 00:49:57,990 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-15 00:49:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:57,990 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-15 00:49:57,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:49:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-15 00:49:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:49:57,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:57,991 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:58,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:58,192 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]=== [2020-09-15 00:49:58,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:58,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-15 00:49:58,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:58,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264470342] [2020-09-15 00:49:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:49:58,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264470342] [2020-09-15 00:49:58,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:58,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:49:58,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545860147] [2020-09-15 00:49:58,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:49:58,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:58,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:49:58,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:49:58,265 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-15 00:50:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:00,606 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-15 00:50:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:00,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:50:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:00,817 INFO L225 Difference]: With dead ends: 70510 [2020-09-15 00:50:00,817 INFO L226 Difference]: Without dead ends: 70477 [2020-09-15 00:50:00,817 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 [2020-09-15 00:50:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-15 00:50:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-15 00:50:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-15 00:50:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-15 00:50:02,615 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-15 00:50:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:02,615 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-15 00:50:02,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:50:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-15 00:50:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:50:02,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:02,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:02,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-15 00:50:02,616 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]=== [2020-09-15 00:50:02,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:02,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-15 00:50:02,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:02,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731399746] [2020-09-15 00:50:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:50:02,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731399746] [2020-09-15 00:50:02,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:02,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:50:02,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160377962] [2020-09-15 00:50:02,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:50:02,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:02,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:50:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:50:02,691 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-15 00:50:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:03,519 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-15 00:50:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:03,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:50:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:03,762 INFO L225 Difference]: With dead ends: 70096 [2020-09-15 00:50:03,762 INFO L226 Difference]: Without dead ends: 70063 [2020-09-15 00:50:03,762 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 [2020-09-15 00:50:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-15 00:50:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-15 00:50:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-15 00:50:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-15 00:50:06,101 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-15 00:50:06,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:06,101 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-15 00:50:06,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:50:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-15 00:50:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:06,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:06,102 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:06,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-15 00:50:06,103 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]=== [2020-09-15 00:50:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-15 00:50:06,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:06,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004292741] [2020-09-15 00:50:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:50:06,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004292741] [2020-09-15 00:50:06,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007960124] [2020-09-15 00:50:06,208 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 [2020-09-15 00:50:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:06,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:06,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:50:06,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:06,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:06,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860279332] [2020-09-15 00:50:06,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:06,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:06,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:06,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:06,454 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-15 00:50:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:08,168 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-15 00:50:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:08,169 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:08,459 INFO L225 Difference]: With dead ends: 100731 [2020-09-15 00:50:08,459 INFO L226 Difference]: Without dead ends: 100715 [2020-09-15 00:50:08,460 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 [2020-09-15 00:50:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-15 00:50:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-15 00:50:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-15 00:50:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-15 00:50:11,308 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-15 00:50:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:11,308 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-15 00:50:11,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-15 00:50:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:11,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:11,310 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:11,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-15 00:50:11,511 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]=== [2020-09-15 00:50:11,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:11,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-15 00:50:11,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:11,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094895572] [2020-09-15 00:50:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:50:11,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094895572] [2020-09-15 00:50:11,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108884413] [2020-09-15 00:50:11,620 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 [2020-09-15 00:50:11,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:50:11,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:50:11,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:50:11,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:11,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:11,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757725534] [2020-09-15 00:50:11,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:11,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:11,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:11,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:11,878 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-15 00:50:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:13,612 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-15 00:50:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:13,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:13,965 INFO L225 Difference]: With dead ends: 99876 [2020-09-15 00:50:13,965 INFO L226 Difference]: Without dead ends: 99855 [2020-09-15 00:50:13,965 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 [2020-09-15 00:50:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-15 00:50:16,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-15 00:50:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-15 00:50:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-15 00:50:16,659 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-15 00:50:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:16,659 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-15 00:50:16,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-15 00:50:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:16,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:16,660 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:16,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:16,861 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]=== [2020-09-15 00:50:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:16,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-15 00:50:16,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:16,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188998321] [2020-09-15 00:50:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:50:16,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188998321] [2020-09-15 00:50:16,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332466986] [2020-09-15 00:50:16,962 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 [2020-09-15 00:50:17,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:50:17,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:50:17,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:17,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:50:17,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:17,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:17,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955393247] [2020-09-15 00:50:17,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:17,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:17,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:17,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:17,202 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-15 00:50:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:19,382 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-15 00:50:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:19,383 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:19,740 INFO L225 Difference]: With dead ends: 100071 [2020-09-15 00:50:19,741 INFO L226 Difference]: Without dead ends: 100055 [2020-09-15 00:50:19,741 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 [2020-09-15 00:50:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-15 00:50:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-15 00:50:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-15 00:50:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-15 00:50:21,994 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-15 00:50:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:21,995 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-15 00:50:21,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-15 00:50:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:21,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:21,996 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:22,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-15 00:50:22,197 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]=== [2020-09-15 00:50:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-15 00:50:22,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:22,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438668544] [2020-09-15 00:50:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:50:22,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438668544] [2020-09-15 00:50:22,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291226177] [2020-09-15 00:50:22,303 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 [2020-09-15 00:50:22,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:50:22,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:50:22,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:22,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:50:22,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:22,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:22,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632896202] [2020-09-15 00:50:22,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:22,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:22,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:22,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:22,569 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-15 00:50:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:24,418 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-15 00:50:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:24,419 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:24,735 INFO L225 Difference]: With dead ends: 99523 [2020-09-15 00:50:24,735 INFO L226 Difference]: Without dead ends: 99502 [2020-09-15 00:50:24,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:50:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-15 00:50:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-15 00:50:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-15 00:50:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-15 00:50:29,762 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-15 00:50:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:29,762 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-15 00:50:29,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-15 00:50:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:29,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:29,763 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:29,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-15 00:50:29,964 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]=== [2020-09-15 00:50:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:29,965 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-15 00:50:29,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:29,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562295159] [2020-09-15 00:50:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:50:30,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562295159] [2020-09-15 00:50:30,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:30,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:50:30,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619703182] [2020-09-15 00:50:30,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:50:30,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:30,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:50:30,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:50:30,063 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-15 00:50:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:31,664 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-15 00:50:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:31,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:50:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:31,959 INFO L225 Difference]: With dead ends: 99710 [2020-09-15 00:50:31,959 INFO L226 Difference]: Without dead ends: 99694 [2020-09-15 00:50:31,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:50:32,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-15 00:50:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-15 00:50:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-15 00:50:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-15 00:50:34,663 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-15 00:50:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:34,663 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-15 00:50:34,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:50:34,663 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-15 00:50:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:34,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:34,664 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:34,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-15 00:50:34,664 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]=== [2020-09-15 00:50:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:34,665 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-15 00:50:34,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:34,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508434462] [2020-09-15 00:50:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:50:34,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508434462] [2020-09-15 00:50:34,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:34,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:50:34,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040580903] [2020-09-15 00:50:34,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:50:34,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:34,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:50:34,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:50:34,768 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-15 00:50:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:36,380 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-15 00:50:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:36,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:50:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:36,704 INFO L225 Difference]: With dead ends: 98863 [2020-09-15 00:50:36,704 INFO L226 Difference]: Without dead ends: 98841 [2020-09-15 00:50:36,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:50:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-15 00:50:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-15 00:50:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-15 00:50:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-15 00:50:39,502 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-15 00:50:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:39,502 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-15 00:50:39,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:50:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-15 00:50:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:39,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:39,503 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:39,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-15 00:50:39,504 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]=== [2020-09-15 00:50:39,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:39,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-15 00:50:39,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:39,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724230854] [2020-09-15 00:50:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:50:39,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724230854] [2020-09-15 00:50:39,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:39,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:50:39,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619572625] [2020-09-15 00:50:39,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:50:39,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:39,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:50:39,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:50:39,563 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-15 00:50:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:39,945 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-15 00:50:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:50:39,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:50:39,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:40,087 INFO L225 Difference]: With dead ends: 46463 [2020-09-15 00:50:40,087 INFO L226 Difference]: Without dead ends: 46417 [2020-09-15 00:50:40,088 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 [2020-09-15 00:50:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-15 00:50:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-15 00:50:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-15 00:50:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-15 00:50:41,479 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-15 00:50:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:41,479 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-15 00:50:41,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:50:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-15 00:50:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:41,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:41,480 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:41,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-15 00:50:41,481 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]=== [2020-09-15 00:50:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-15 00:50:41,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:41,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173770590] [2020-09-15 00:50:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:41,993 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-15 00:50:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:50:42,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173770590] [2020-09-15 00:50:42,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376368791] [2020-09-15 00:50:42,025 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 [2020-09-15 00:50:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:42,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:50:42,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:50:42,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:42,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:50:42,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789162502] [2020-09-15 00:50:42,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:50:42,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:42,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:50:42,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:50:42,231 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-15 00:50:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:43,226 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-15 00:50:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:43,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:50:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:43,513 INFO L225 Difference]: With dead ends: 75380 [2020-09-15 00:50:43,513 INFO L226 Difference]: Without dead ends: 75344 [2020-09-15 00:50:43,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:50:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-15 00:50:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-15 00:50:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-15 00:50:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-15 00:50:45,456 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-15 00:50:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:45,456 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-15 00:50:45,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:50:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-15 00:50:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:45,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:45,458 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:45,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:45,659 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]=== [2020-09-15 00:50:45,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:45,660 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-15 00:50:45,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:45,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130839138] [2020-09-15 00:50:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:50:45,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130839138] [2020-09-15 00:50:45,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196375274] [2020-09-15 00:50:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-15 00:50:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:47,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:50:47,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:50:47,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:47,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:50:47,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863887621] [2020-09-15 00:50:47,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:50:47,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:47,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:50:47,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:50:47,932 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-15 00:50:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:48,800 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-15 00:50:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:48,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:50:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:49,063 INFO L225 Difference]: With dead ends: 79487 [2020-09-15 00:50:49,063 INFO L226 Difference]: Without dead ends: 79445 [2020-09-15 00:50:49,064 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 [2020-09-15 00:50:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-15 00:50:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-15 00:50:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-15 00:50:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-15 00:50:51,186 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-15 00:50:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:51,186 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-15 00:50:51,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:50:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-15 00:50:51,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:51,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:51,189 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:51,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:51,390 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]=== [2020-09-15 00:50:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:51,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-15 00:50:51,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:51,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618222414] [2020-09-15 00:50:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:50:51,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618222414] [2020-09-15 00:50:51,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552749598] [2020-09-15 00:50:51,466 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 [2020-09-15 00:50:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:51,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:50:51,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:50:51,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:51,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:50:51,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177662443] [2020-09-15 00:50:51,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:50:51,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:51,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:50:51,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:50:51,638 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-15 00:50:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:52,862 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-15 00:50:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:52,863 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:50:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:53,174 INFO L225 Difference]: With dead ends: 82728 [2020-09-15 00:50:53,175 INFO L226 Difference]: Without dead ends: 82673 [2020-09-15 00:50:53,175 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 [2020-09-15 00:50:54,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-15 00:50:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-15 00:50:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-15 00:50:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-15 00:50:55,288 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-15 00:50:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:55,288 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-15 00:50:55,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:50:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-15 00:50:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:55,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:55,290 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:55,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:55,491 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]=== [2020-09-15 00:50:55,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:55,492 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-15 00:50:55,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:55,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290761520] [2020-09-15 00:50:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:50:55,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290761520] [2020-09-15 00:50:55,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:55,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:50:55,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179989384] [2020-09-15 00:50:55,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:50:55,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:50:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:50:55,576 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-15 00:50:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:56,686 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-15 00:50:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:56,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:50:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:56,961 INFO L225 Difference]: With dead ends: 83507 [2020-09-15 00:50:56,961 INFO L226 Difference]: Without dead ends: 83452 [2020-09-15 00:50:56,961 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 [2020-09-15 00:50:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-15 00:50:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-15 00:50:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-15 00:50:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-15 00:50:59,153 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-15 00:50:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:59,153 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-15 00:50:59,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:50:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-15 00:50:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:59,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:59,156 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:59,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-15 00:50:59,156 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]=== [2020-09-15 00:50:59,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-15 00:50:59,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:59,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439356707] [2020-09-15 00:50:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:50:59,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439356707] [2020-09-15 00:50:59,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:59,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:50:59,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076901340] [2020-09-15 00:50:59,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:50:59,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:59,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:50:59,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:50:59,236 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-15 00:51:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:00,558 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-15 00:51:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:51:00,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:51:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:00,847 INFO L225 Difference]: With dead ends: 83523 [2020-09-15 00:51:00,847 INFO L226 Difference]: Without dead ends: 83468 [2020-09-15 00:51:00,847 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 [2020-09-15 00:51:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-15 00:51:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-15 00:51:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-15 00:51:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-15 00:51:02,930 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-15 00:51:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:02,930 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-15 00:51:02,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:51:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-15 00:51:02,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:51:02,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:02,933 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:02,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-15 00:51:02,933 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]=== [2020-09-15 00:51:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:02,933 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-15 00:51:02,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:02,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188190226] [2020-09-15 00:51:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:51:03,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188190226] [2020-09-15 00:51:03,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:51:03,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:51:03,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496957083] [2020-09-15 00:51:03,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:51:03,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:03,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:51:03,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:51:03,016 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-15 00:51:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:04,379 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-15 00:51:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:51:04,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:51:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:04,633 INFO L225 Difference]: With dead ends: 83918 [2020-09-15 00:51:04,633 INFO L226 Difference]: Without dead ends: 83863 [2020-09-15 00:51:04,634 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 [2020-09-15 00:51:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-15 00:51:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-15 00:51:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-15 00:51:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-15 00:51:06,632 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-15 00:51:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:06,632 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-15 00:51:06,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:51:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-15 00:51:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:06,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:06,635 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:06,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-15 00:51:06,636 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]=== [2020-09-15 00:51:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:06,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-15 00:51:06,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:06,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938326850] [2020-09-15 00:51:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:51:06,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938326850] [2020-09-15 00:51:06,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515036533] [2020-09-15 00:51:06,750 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 [2020-09-15 00:51:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:06,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:06,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:51:06,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:06,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:06,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647712983] [2020-09-15 00:51:06,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:06,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:06,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:06,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:06,997 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-15 00:51:09,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:09,625 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-15 00:51:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:09,626 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:09,997 INFO L225 Difference]: With dead ends: 122892 [2020-09-15 00:51:09,997 INFO L226 Difference]: Without dead ends: 122862 [2020-09-15 00:51:09,999 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 [2020-09-15 00:51:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-15 00:51:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-15 00:51:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-15 00:51:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-15 00:51:16,843 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-15 00:51:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:16,843 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-15 00:51:16,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-15 00:51:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:16,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:16,846 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:17,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-15 00:51:17,047 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]=== [2020-09-15 00:51:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-15 00:51:17,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:17,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718830209] [2020-09-15 00:51:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:51:17,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718830209] [2020-09-15 00:51:17,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626378183] [2020-09-15 00:51:17,155 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 [2020-09-15 00:51:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:17,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:17,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:51:17,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:17,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:17,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870610812] [2020-09-15 00:51:17,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:17,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:17,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:17,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:17,410 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-15 00:51:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:19,452 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-15 00:51:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:19,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:19,818 INFO L225 Difference]: With dead ends: 121590 [2020-09-15 00:51:19,818 INFO L226 Difference]: Without dead ends: 121560 [2020-09-15 00:51:19,818 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 [2020-09-15 00:51:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-15 00:51:22,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-15 00:51:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-15 00:51:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-15 00:51:23,026 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-15 00:51:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:23,026 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-15 00:51:23,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-15 00:51:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:23,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:23,030 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:23,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:23,237 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]=== [2020-09-15 00:51:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:23,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-15 00:51:23,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:23,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425596423] [2020-09-15 00:51:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:51:23,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425596423] [2020-09-15 00:51:23,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520006039] [2020-09-15 00:51:23,343 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 [2020-09-15 00:51:23,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:51:23,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:23,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:23,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:51:23,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:23,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:23,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962823745] [2020-09-15 00:51:23,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:23,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:23,598 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-15 00:51:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:25,398 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-15 00:51:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:25,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:25,756 INFO L225 Difference]: With dead ends: 120395 [2020-09-15 00:51:25,756 INFO L226 Difference]: Without dead ends: 120362 [2020-09-15 00:51:25,757 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 [2020-09-15 00:51:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-15 00:51:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-15 00:51:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-15 00:51:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-15 00:51:29,071 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-15 00:51:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:29,071 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-15 00:51:29,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-15 00:51:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:29,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:29,074 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:29,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-15 00:51:29,275 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]=== [2020-09-15 00:51:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:29,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-15 00:51:29,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:29,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135642954] [2020-09-15 00:51:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:51:29,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135642954] [2020-09-15 00:51:29,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869752519] [2020-09-15 00:51:29,384 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 [2020-09-15 00:51:29,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:51:29,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:29,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:29,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:51:29,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:29,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:29,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101019447] [2020-09-15 00:51:29,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:29,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:29,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:29,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:29,645 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-09-15 00:51:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:31,603 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-09-15 00:51:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:31,604 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:32,673 INFO L225 Difference]: With dead ends: 119346 [2020-09-15 00:51:32,673 INFO L226 Difference]: Without dead ends: 119313 [2020-09-15 00:51:32,674 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 [2020-09-15 00:51:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-09-15 00:51:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-09-15 00:51:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-15 00:51:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-15 00:51:35,158 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-15 00:51:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:35,158 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-15 00:51:35,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-15 00:51:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:35,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:35,160 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:35,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-15 00:51:35,361 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:51:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-09-15 00:51:35,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:35,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594081234] [2020-09-15 00:51:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:51:35,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594081234] [2020-09-15 00:51:35,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863095349] [2020-09-15 00:51:35,470 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:35,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:51:35,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:35,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:35,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:51:35,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:35,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:35,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211327956] [2020-09-15 00:51:35,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:35,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:35,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:35,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:35,733 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-09-15 00:51:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:38,022 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-09-15 00:51:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:38,023 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:38,386 INFO L225 Difference]: With dead ends: 119770 [2020-09-15 00:51:38,386 INFO L226 Difference]: Without dead ends: 119740 [2020-09-15 00:51:38,386 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 [2020-09-15 00:51:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-09-15 00:51:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-09-15 00:51:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-09-15 00:51:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-09-15 00:51:41,686 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-09-15 00:51:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:41,687 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-09-15 00:51:41,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-09-15 00:51:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:41,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:41,689 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:41,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-15 00:51:41,900 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:51:41,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:41,900 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-09-15 00:51:41,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:41,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273148490] [2020-09-15 00:51:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:51:42,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273148490] [2020-09-15 00:51:42,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430408015] [2020-09-15 00:51:42,004 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:42,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:42,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:51:42,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:42,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:42,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122768995] [2020-09-15 00:51:42,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:42,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:42,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:42,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:42,281 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-09-15 00:51:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:44,150 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-09-15 00:51:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:44,151 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:44,504 INFO L225 Difference]: With dead ends: 121131 [2020-09-15 00:51:44,504 INFO L226 Difference]: Without dead ends: 121101 [2020-09-15 00:51:44,505 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 [2020-09-15 00:51:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-09-15 00:51:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-09-15 00:51:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-09-15 00:51:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-09-15 00:51:50,392 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-09-15 00:51:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:50,393 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-09-15 00:51:50,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-09-15 00:51:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:50,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:50,395 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:50,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-15 00:51:50,596 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:51:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:50,597 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-09-15 00:51:50,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:50,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855287926] [2020-09-15 00:51:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:51:50,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855287926] [2020-09-15 00:51:50,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444991535] [2020-09-15 00:51:50,704 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:50,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:51:50,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:50,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:50,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:51:50,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:50,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:50,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107581004] [2020-09-15 00:51:50,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:50,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:50,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:50,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:50,955 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-09-15 00:51:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:53,522 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-09-15 00:51:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:53,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:53,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:53,919 INFO L225 Difference]: With dead ends: 120194 [2020-09-15 00:51:53,919 INFO L226 Difference]: Without dead ends: 120154 [2020-09-15 00:51:53,919 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 [2020-09-15 00:51:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-09-15 00:51:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-09-15 00:51:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-09-15 00:51:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-09-15 00:51:56,414 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-09-15 00:51:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:56,415 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-09-15 00:51:56,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-09-15 00:51:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:56,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:56,417 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:56,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:56,618 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:51:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-09-15 00:51:56,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:56,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283569612] [2020-09-15 00:51:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:51:56,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283569612] [2020-09-15 00:51:56,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838446596] [2020-09-15 00:51:56,724 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:57,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:51:57,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:57,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:57,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:51:57,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:57,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:57,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549974189] [2020-09-15 00:51:57,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:57,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:57,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:57,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:57,518 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-09-15 00:51:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:59,317 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-09-15 00:51:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:59,318 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:59,686 INFO L225 Difference]: With dead ends: 118559 [2020-09-15 00:51:59,686 INFO L226 Difference]: Without dead ends: 118526 [2020-09-15 00:51:59,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:00,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-09-15 00:52:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-09-15 00:52:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-15 00:52:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-09-15 00:52:05,223 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-09-15 00:52:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:05,223 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-09-15 00:52:05,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-09-15 00:52:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:05,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:05,226 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:05,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-15 00:52:05,434 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:05,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:05,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-09-15 00:52:05,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:05,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193252511] [2020-09-15 00:52:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:05,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193252511] [2020-09-15 00:52:05,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105310439] [2020-09-15 00:52:05,541 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:52:05,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:52:05,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:05,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:05,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:05,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:05,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:05,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828316032] [2020-09-15 00:52:05,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:05,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:05,792 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-09-15 00:52:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:07,711 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-09-15 00:52:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:07,712 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:08,080 INFO L225 Difference]: With dead ends: 118955 [2020-09-15 00:52:08,080 INFO L226 Difference]: Without dead ends: 118925 [2020-09-15 00:52:08,081 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 [2020-09-15 00:52:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-09-15 00:52:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-09-15 00:52:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-09-15 00:52:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-09-15 00:52:11,306 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-09-15 00:52:11,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:11,306 INFO L479 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-09-15 00:52:11,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-09-15 00:52:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:11,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:11,309 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:11,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-09-15 00:52:11,510 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:11,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:11,510 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-09-15 00:52:11,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:11,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118823868] [2020-09-15 00:52:11,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:11,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118823868] [2020-09-15 00:52:11,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435184322] [2020-09-15 00:52:11,617 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:52:11,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:52:11,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:11,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:11,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:11,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:11,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:11,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812013342] [2020-09-15 00:52:11,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:11,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:11,874 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-09-15 00:52:14,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:14,627 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-09-15 00:52:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:14,628 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:14,993 INFO L225 Difference]: With dead ends: 117996 [2020-09-15 00:52:14,993 INFO L226 Difference]: Without dead ends: 117966 [2020-09-15 00:52:14,993 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 [2020-09-15 00:52:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-09-15 00:52:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-09-15 00:52:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-09-15 00:52:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-09-15 00:52:20,770 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-09-15 00:52:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:20,770 INFO L479 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-09-15 00:52:20,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-09-15 00:52:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:20,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:20,773 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:20,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-09-15 00:52:20,974 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:20,975 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-09-15 00:52:20,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:20,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707169949] [2020-09-15 00:52:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:21,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707169949] [2020-09-15 00:52:21,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420388913] [2020-09-15 00:52:21,078 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:52:21,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:52:21,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:21,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:21,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:21,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:21,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:21,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531839588] [2020-09-15 00:52:21,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:21,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:21,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:21,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:21,332 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-09-15 00:52:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:23,293 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-09-15 00:52:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:23,293 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:23,664 INFO L225 Difference]: With dead ends: 119076 [2020-09-15 00:52:23,665 INFO L226 Difference]: Without dead ends: 119036 [2020-09-15 00:52:23,665 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 [2020-09-15 00:52:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-09-15 00:52:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-09-15 00:52:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-09-15 00:52:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-09-15 00:52:26,803 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-09-15 00:52:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:26,803 INFO L479 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-09-15 00:52:26,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-09-15 00:52:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:26,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:26,806 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:27,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-09-15 00:52:27,013 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:27,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:27,013 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-09-15 00:52:27,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:27,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031308120] [2020-09-15 00:52:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:27,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031308120] [2020-09-15 00:52:27,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391533323] [2020-09-15 00:52:27,123 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 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:52:27,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:52:27,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:27,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:27,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:52:27,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:27,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:27,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389770320] [2020-09-15 00:52:27,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:27,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:27,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:27,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:27,392 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-09-15 00:52:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:29,276 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-09-15 00:52:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:29,277 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:29,649 INFO L225 Difference]: With dead ends: 118020 [2020-09-15 00:52:29,649 INFO L226 Difference]: Without dead ends: 117980 [2020-09-15 00:52:29,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-09-15 00:52:32,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-09-15 00:52:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-09-15 00:52:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-09-15 00:52:32,822 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-09-15 00:52:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:32,822 INFO L479 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-09-15 00:52:32,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-09-15 00:52:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:32,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:32,825 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:33,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:52:33,026 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:33,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-09-15 00:52:33,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:33,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083367650] [2020-09-15 00:52:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:52:33,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083367650] [2020-09-15 00:52:33,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:33,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:33,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740742824] [2020-09-15 00:52:33,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:33,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:33,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:33,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:33,140 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-09-15 00:52:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:35,433 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-09-15 00:52:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:35,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:35,847 INFO L225 Difference]: With dead ends: 118363 [2020-09-15 00:52:35,848 INFO L226 Difference]: Without dead ends: 118333 [2020-09-15 00:52:35,848 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 [2020-09-15 00:52:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-09-15 00:52:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-09-15 00:52:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-09-15 00:52:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-09-15 00:52:41,567 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-09-15 00:52:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:41,567 INFO L479 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-09-15 00:52:41,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:52:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-09-15 00:52:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:41,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:41,570 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:41,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-15 00:52:41,570 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:41,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-09-15 00:52:41,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:41,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878631762] [2020-09-15 00:52:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:52:41,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878631762] [2020-09-15 00:52:41,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:41,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:41,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387426015] [2020-09-15 00:52:41,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:41,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:41,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:41,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:41,676 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-09-15 00:52:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:43,442 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-09-15 00:52:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:43,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:43,801 INFO L225 Difference]: With dead ends: 117027 [2020-09-15 00:52:43,801 INFO L226 Difference]: Without dead ends: 116997 [2020-09-15 00:52:43,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:52:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-09-15 00:52:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-09-15 00:52:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-09-15 00:52:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-09-15 00:52:46,887 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-09-15 00:52:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:46,887 INFO L479 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-09-15 00:52:46,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:52:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-09-15 00:52:46,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:46,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:46,890 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:46,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-15 00:52:46,890 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:46,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:46,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-09-15 00:52:46,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:46,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870164055] [2020-09-15 00:52:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:52:46,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870164055] [2020-09-15 00:52:46,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:46,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:46,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557825094] [2020-09-15 00:52:46,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:46,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:46,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:46,996 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-09-15 00:52:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:48,670 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-09-15 00:52:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:48,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:49,066 INFO L225 Difference]: With dead ends: 116213 [2020-09-15 00:52:49,066 INFO L226 Difference]: Without dead ends: 116173 [2020-09-15 00:52:49,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:52:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-09-15 00:52:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-09-15 00:52:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-09-15 00:52:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-09-15 00:52:52,223 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-09-15 00:52:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:52,224 INFO L479 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-09-15 00:52:52,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:52:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-09-15 00:52:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:52,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:52,226 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:52,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-15 00:52:52,227 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:52,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:52,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-09-15 00:52:52,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:52,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436694132] [2020-09-15 00:52:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:52:52,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436694132] [2020-09-15 00:52:52,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:52,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:52,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476226868] [2020-09-15 00:52:52,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:52,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:52,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:52,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:52,333 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-09-15 00:52:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:54,141 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-09-15 00:52:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:54,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:55,198 INFO L225 Difference]: With dead ends: 115048 [2020-09-15 00:52:55,198 INFO L226 Difference]: Without dead ends: 115018 [2020-09-15 00:52:55,199 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 [2020-09-15 00:52:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-09-15 00:52:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-09-15 00:52:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-09-15 00:52:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-09-15 00:52:57,508 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-09-15 00:52:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:57,509 INFO L479 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-09-15 00:52:57,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:52:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-09-15 00:52:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:57,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:57,511 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:52:57,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-15 00:52:57,511 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:52:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-09-15 00:52:57,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:57,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566856384] [2020-09-15 00:52:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:52:57,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566856384] [2020-09-15 00:52:57,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:57,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:57,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217454973] [2020-09-15 00:52:57,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:57,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:57,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:57,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:57,623 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-09-15 00:52:59,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:59,645 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-09-15 00:52:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:59,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:00,003 INFO L225 Difference]: With dead ends: 114413 [2020-09-15 00:53:00,004 INFO L226 Difference]: Without dead ends: 114373 [2020-09-15 00:53:00,004 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 [2020-09-15 00:53:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-09-15 00:53:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-09-15 00:53:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-09-15 00:53:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-09-15 00:53:03,363 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-09-15 00:53:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:03,364 INFO L479 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-09-15 00:53:03,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:53:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-09-15 00:53:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:53:03,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:03,366 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:53:03,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-15 00:53:03,366 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:53:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:03,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-09-15 00:53:03,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:03,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217067937] [2020-09-15 00:53:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:53:03,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217067937] [2020-09-15 00:53:03,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:53:03,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:53:03,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149645331] [2020-09-15 00:53:03,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:53:03,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:03,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:53:03,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:53:03,473 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-09-15 00:53:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:05,124 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-09-15 00:53:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:53:05,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:53:05,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:05,486 INFO L225 Difference]: With dead ends: 113466 [2020-09-15 00:53:05,486 INFO L226 Difference]: Without dead ends: 113426 [2020-09-15 00:53:05,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:53:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-09-15 00:53:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-09-15 00:53:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-09-15 00:53:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-09-15 00:53:10,958 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-09-15 00:53:10,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:10,958 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-09-15 00:53:10,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:53:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-09-15 00:53:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:53:10,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:10,961 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:53:10,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-15 00:53:10,961 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:53:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-09-15 00:53:10,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:10,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279789839] [2020-09-15 00:53:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:53:11,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279789839] [2020-09-15 00:53:11,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:53:11,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:53:11,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208749482] [2020-09-15 00:53:11,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:53:11,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:53:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:53:11,024 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-09-15 00:53:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:11,487 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-09-15 00:53:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:53:11,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:53:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:11,649 INFO L225 Difference]: With dead ends: 53165 [2020-09-15 00:53:11,649 INFO L226 Difference]: Without dead ends: 53102 [2020-09-15 00:53:11,649 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 [2020-09-15 00:53:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-09-15 00:53:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-09-15 00:53:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-15 00:53:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-15 00:53:13,221 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-15 00:53:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:13,221 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-15 00:53:13,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:53:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-15 00:53:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:13,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:13,225 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:53:13,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-15 00:53:13,225 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:53:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-09-15 00:53:13,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:13,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082599558] [2020-09-15 00:53:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:53:13,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082599558] [2020-09-15 00:53:13,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433903403] [2020-09-15 00:53:13,951 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:53:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:14,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:14,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:53:14,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:14,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:14,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427255264] [2020-09-15 00:53:14,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:14,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:14,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:14,286 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-09-15 00:53:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:18,524 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-09-15 00:53:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:18,525 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:19,063 INFO L225 Difference]: With dead ends: 186148 [2020-09-15 00:53:19,063 INFO L226 Difference]: Without dead ends: 186130 [2020-09-15 00:53:19,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:53:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-09-15 00:53:26,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-09-15 00:53:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-09-15 00:53:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-09-15 00:53:26,414 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-09-15 00:53:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:26,414 INFO L479 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-09-15 00:53:26,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:53:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-09-15 00:53:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:26,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:26,418 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:53:26,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-15 00:53:26,618 INFO L427 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:53:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:26,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-09-15 00:53:26,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:26,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242326050] [2020-09-15 00:53:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:27,175 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-09-15 00:53:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:53:27,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242326050] [2020-09-15 00:53:27,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597695765] [2020-09-15 00:53:27,252 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:53:27,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:53:27,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:53:27,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:27,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:53:27,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:27,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:27,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410938122] [2020-09-15 00:53:27,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:27,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:27,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:27,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:27,552 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-09-15 00:53:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:31,849 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-09-15 00:53:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:31,850 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:32,451 INFO L225 Difference]: With dead ends: 185731 [2020-09-15 00:53:32,451 INFO L226 Difference]: Without dead ends: 185707 [2020-09-15 00:53:32,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:53:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-09-15 00:53:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-09-15 00:53:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-09-15 00:53:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-09-15 00:53:36,934 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-09-15 00:53:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:36,934 INFO L479 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-09-15 00:53:36,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:53:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-09-15 00:53:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:36,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:36,938 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:53:37,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-15 00:53:37,139 INFO L427 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:53:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-09-15 00:53:37,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:37,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129513724] [2020-09-15 00:53:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:53:37,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129513724] [2020-09-15 00:53:37,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629403641] [2020-09-15 00:53:37,275 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:53:37,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-15 00:53:37,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:53:37,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:37,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:37,821 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-15 00:53:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:53:37,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:37,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:37,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213073398] [2020-09-15 00:53:37,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:37,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:37,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:37,900 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-09-15 00:53:42,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:42,092 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-09-15 00:53:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:42,092 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:42,615 INFO L225 Difference]: With dead ends: 185071 [2020-09-15 00:53:42,615 INFO L226 Difference]: Without dead ends: 185053 [2020-09-15 00:53:42,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:53:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-09-15 00:53:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-09-15 00:53:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-09-15 00:53:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-09-15 00:53:49,837 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-09-15 00:53:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:49,838 INFO L479 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-09-15 00:53:49,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:53:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-09-15 00:53:49,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:49,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:49,841 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:53:50,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:53:50,042 INFO L427 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:53:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:50,043 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-09-15 00:53:50,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:50,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269497293] [2020-09-15 00:53:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:53:50,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269497293] [2020-09-15 00:53:50,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633314722] [2020-09-15 00:53:50,179 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:53:50,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:53:50,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:53:50,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:50,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:53:50,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:50,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:50,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236898930] [2020-09-15 00:53:50,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:50,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:50,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:50,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:50,510 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-09-15 00:53:55,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:55,130 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-09-15 00:53:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:55,131 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:55,653 INFO L225 Difference]: With dead ends: 184772 [2020-09-15 00:53:55,654 INFO L226 Difference]: Without dead ends: 184748 [2020-09-15 00:53:55,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:53:58,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-09-15 00:53:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-09-15 00:53:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-09-15 00:54:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-09-15 00:54:00,137 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-09-15 00:54:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:00,137 INFO L479 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-09-15 00:54:00,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-09-15 00:54:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:00,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:00,141 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:54:00,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:00,342 INFO L427 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:54:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-09-15 00:54:00,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:00,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469736316] [2020-09-15 00:54:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:54:00,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469736316] [2020-09-15 00:54:00,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396046551] [2020-09-15 00:54:00,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:00,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:54:00,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:00,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:54:00,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:00,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:00,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955629801] [2020-09-15 00:54:00,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:00,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:00,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:00,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:00,794 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-09-15 00:54:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:05,670 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-09-15 00:54:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:05,670 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:06,256 INFO L225 Difference]: With dead ends: 184120 [2020-09-15 00:54:06,257 INFO L226 Difference]: Without dead ends: 184102 [2020-09-15 00:54:06,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-09-15 00:54:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-09-15 00:54:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-09-15 00:54:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-09-15 00:54:13,642 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-09-15 00:54:13,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:13,642 INFO L479 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-09-15 00:54:13,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-09-15 00:54:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:13,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:13,646 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:54:13,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:13,847 INFO L427 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:54:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:13,847 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-09-15 00:54:13,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:13,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215105703] [2020-09-15 00:54:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:54:13,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215105703] [2020-09-15 00:54:13,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644134799] [2020-09-15 00:54:13,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:14,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-15 00:54:14,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:14,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:14,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:54:14,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:14,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:14,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22276643] [2020-09-15 00:54:14,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:14,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:14,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:14,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:14,322 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-09-15 00:54:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:18,592 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-09-15 00:54:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:18,593 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:19,114 INFO L225 Difference]: With dead ends: 183711 [2020-09-15 00:54:19,114 INFO L226 Difference]: Without dead ends: 183683 [2020-09-15 00:54:19,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-09-15 00:54:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-09-15 00:54:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-09-15 00:54:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-09-15 00:54:27,243 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-09-15 00:54:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:27,244 INFO L479 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-09-15 00:54:27,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-09-15 00:54:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:27,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:27,247 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:54:27,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-15 00:54:27,448 INFO L427 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:54:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-09-15 00:54:27,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:27,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544647676] [2020-09-15 00:54:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:54:27,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544647676] [2020-09-15 00:54:27,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267965540] [2020-09-15 00:54:27,534 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:27,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:54:27,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:54:27,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:27,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:54:27,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692355748] [2020-09-15 00:54:27,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:54:27,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:27,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:54:27,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:54:27,751 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-09-15 00:54:28,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:28,634 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-09-15 00:54:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:54:28,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:54:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:28,891 INFO L225 Difference]: With dead ends: 82213 [2020-09-15 00:54:28,891 INFO L226 Difference]: Without dead ends: 82165 [2020-09-15 00:54:28,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-09-15 00:54:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-09-15 00:54:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-15 00:54:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-15 00:54:31,573 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-15 00:54:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:31,573 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-15 00:54:31,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:54:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-15 00:54:31,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:31,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:31,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:54:31,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-15 00:54:31,778 INFO L427 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:54:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-09-15 00:54:31,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:31,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998052571] [2020-09-15 00:54:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:31,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998052571] [2020-09-15 00:54:31,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042389207] [2020-09-15 00:54:31,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:32,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:32,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:32,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:32,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:32,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779440053] [2020-09-15 00:54:32,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:32,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:32,244 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-09-15 00:54:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:37,111 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-09-15 00:54:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:37,112 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:37,638 INFO L225 Difference]: With dead ends: 183266 [2020-09-15 00:54:37,638 INFO L226 Difference]: Without dead ends: 183248 [2020-09-15 00:54:37,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-09-15 00:54:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-09-15 00:54:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-09-15 00:54:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-09-15 00:54:45,036 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-09-15 00:54:45,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:45,037 INFO L479 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-09-15 00:54:45,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-09-15 00:54:45,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:45,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:45,040 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:54:45,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-15 00:54:45,241 INFO L427 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:54:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-09-15 00:54:45,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:45,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832475792] [2020-09-15 00:54:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:54:45,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832475792] [2020-09-15 00:54:45,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65718007] [2020-09-15 00:54:45,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:45,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:54:45,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:45,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:45,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:54:45,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:45,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:45,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827953240] [2020-09-15 00:54:45,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:45,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:45,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:45,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:45,706 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-09-15 00:54:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:51,032 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-15 00:54:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:51,034 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:51,565 INFO L225 Difference]: With dead ends: 182849 [2020-09-15 00:54:51,565 INFO L226 Difference]: Without dead ends: 182825 [2020-09-15 00:54:51,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-15 00:54:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-09-15 00:54:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-09-15 00:54:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-09-15 00:54:57,144 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-09-15 00:54:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:57,145 INFO L479 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-09-15 00:54:57,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-09-15 00:54:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:57,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:57,149 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:54:57,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-15 00:54:57,350 INFO L427 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:54:57,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:57,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-09-15 00:54:57,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:57,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333039913] [2020-09-15 00:54:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:57,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333039913] [2020-09-15 00:54:57,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061569925] [2020-09-15 00:54:57,489 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 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:57,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:54:57,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:57,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:57,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:57,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:57,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:57,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789865907] [2020-09-15 00:54:57,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:57,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:57,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:57,815 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-09-15 00:55:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:02,338 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-09-15 00:55:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:02,339 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:07,066 INFO L225 Difference]: With dead ends: 183813 [2020-09-15 00:55:07,066 INFO L226 Difference]: Without dead ends: 183795 [2020-09-15 00:55:07,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-09-15 00:55:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-09-15 00:55:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-15 00:55:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-09-15 00:55:10,896 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-09-15 00:55:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:10,896 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-09-15 00:55:10,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-09-15 00:55:10,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:10,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:10,901 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:55:11,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-15 00:55:11,109 INFO L427 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:55:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-09-15 00:55:11,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:11,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212503600] [2020-09-15 00:55:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:55:11,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212503600] [2020-09-15 00:55:11,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122228488] [2020-09-15 00:55:11,252 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:11,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:55:11,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:55:11,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:11,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:55:11,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:11,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:11,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633744639] [2020-09-15 00:55:11,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:11,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:11,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:11,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:11,581 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-09-15 00:55:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:16,996 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-09-15 00:55:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:16,997 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:16,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:17,521 INFO L225 Difference]: With dead ends: 184566 [2020-09-15 00:55:17,521 INFO L226 Difference]: Without dead ends: 184542 [2020-09-15 00:55:17,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:20,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-09-15 00:55:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-09-15 00:55:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-09-15 00:55:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-09-15 00:55:22,500 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-09-15 00:55:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:22,501 INFO L479 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-09-15 00:55:22,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-09-15 00:55:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:22,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:22,506 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:55:22,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:22,707 INFO L427 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:55:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-09-15 00:55:22,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:22,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057387961] [2020-09-15 00:55:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:55:22,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057387961] [2020-09-15 00:55:22,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237728212] [2020-09-15 00:55:22,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:22,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:55:22,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:55:22,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:22,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:55:23,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:23,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:23,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834536686] [2020-09-15 00:55:23,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:23,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:23,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:23,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:23,174 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-09-15 00:55:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:28,385 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-09-15 00:55:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:28,386 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:28,936 INFO L225 Difference]: With dead ends: 183914 [2020-09-15 00:55:28,936 INFO L226 Difference]: Without dead ends: 183896 [2020-09-15 00:55:28,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-09-15 00:55:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-09-15 00:55:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-09-15 00:55:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-09-15 00:55:36,491 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-09-15 00:55:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:36,491 INFO L479 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-09-15 00:55:36,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:36,491 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-09-15 00:55:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:36,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:36,495 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:55:36,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-15 00:55:36,696 INFO L427 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:55:36,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:36,697 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-09-15 00:55:36,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:36,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463324867] [2020-09-15 00:55:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:55:36,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463324867] [2020-09-15 00:55:36,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406014020] [2020-09-15 00:55:36,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:36,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-09-15 00:55:36,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:55:36,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:36,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:55:37,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:37,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:37,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241704112] [2020-09-15 00:55:37,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:37,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:37,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:37,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:37,175 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-09-15 00:55:39,154 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-09-15 00:55:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:42,651 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-09-15 00:55:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:42,652 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:43,163 INFO L225 Difference]: With dead ends: 182421 [2020-09-15 00:55:43,164 INFO L226 Difference]: Without dead ends: 182393 [2020-09-15 00:55:43,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-09-15 00:55:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-09-15 00:55:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-09-15 00:55:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-09-15 00:55:48,151 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-09-15 00:55:48,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:48,151 INFO L479 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-09-15 00:55:48,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:48,151 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-09-15 00:55:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:48,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:48,155 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:55:48,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-09-15 00:55:48,356 INFO L427 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:55:48,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:48,356 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-09-15 00:55:48,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:48,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969219838] [2020-09-15 00:55:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-15 00:55:48,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969219838] [2020-09-15 00:55:48,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515742093] [2020-09-15 00:55:48,445 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 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:48,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:55:48,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-15 00:55:48,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:48,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:55:48,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367212194] [2020-09-15 00:55:48,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:55:48,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:55:48,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:55:48,659 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-09-15 00:55:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:49,642 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-09-15 00:55:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:55:49,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:55:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:49,904 INFO L225 Difference]: With dead ends: 86095 [2020-09-15 00:55:49,904 INFO L226 Difference]: Without dead ends: 86043 [2020-09-15 00:55:49,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:51,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-09-15 00:55:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-09-15 00:55:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-15 00:55:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-09-15 00:55:52,680 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-09-15 00:55:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:52,681 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-09-15 00:55:52,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:55:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-09-15 00:55:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:52,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:52,685 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:55:52,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:52,886 INFO L427 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:55:52,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:52,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-09-15 00:55:52,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:52,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582454195] [2020-09-15 00:55:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:55:53,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582454195] [2020-09-15 00:55:53,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330742815] [2020-09-15 00:55:53,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:53,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:53,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:55:53,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:53,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:53,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298442102] [2020-09-15 00:55:53,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:53,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:53,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:53,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:53,347 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-09-15 00:55:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:59,200 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-09-15 00:55:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:59,201 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:59,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:59,749 INFO L225 Difference]: With dead ends: 182203 [2020-09-15 00:55:59,750 INFO L226 Difference]: Without dead ends: 182185 [2020-09-15 00:55:59,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-09-15 00:56:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-09-15 00:56:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-09-15 00:56:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-09-15 00:56:04,669 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-09-15 00:56:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:04,669 INFO L479 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-09-15 00:56:04,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-09-15 00:56:04,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:04,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:04,675 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:56:04,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:04,889 INFO L427 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:56:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:04,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-09-15 00:56:04,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:04,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935166785] [2020-09-15 00:56:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:05,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935166785] [2020-09-15 00:56:05,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949749746] [2020-09-15 00:56:05,036 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 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:05,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:56:05,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:05,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:05,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:05,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:05,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:05,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220501730] [2020-09-15 00:56:05,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:05,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:05,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:05,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:05,385 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-09-15 00:56:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:09,815 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-09-15 00:56:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:09,816 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:11,426 INFO L225 Difference]: With dead ends: 182814 [2020-09-15 00:56:11,427 INFO L226 Difference]: Without dead ends: 182790 [2020-09-15 00:56:11,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-09-15 00:56:18,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-09-15 00:56:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-09-15 00:56:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-09-15 00:56:18,797 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-09-15 00:56:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:18,797 INFO L479 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-09-15 00:56:18,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-09-15 00:56:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:18,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:18,802 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:56:19,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:19,003 INFO L427 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:56:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-09-15 00:56:19,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:19,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624168079] [2020-09-15 00:56:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:19,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624168079] [2020-09-15 00:56:19,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939498633] [2020-09-15 00:56:19,154 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 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:19,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:56:19,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:19,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:19,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:19,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:19,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:19,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063281296] [2020-09-15 00:56:19,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:19,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:19,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:19,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:19,476 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-09-15 00:56:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:24,541 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-09-15 00:56:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:24,542 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:24,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:25,092 INFO L225 Difference]: With dead ends: 181233 [2020-09-15 00:56:25,092 INFO L226 Difference]: Without dead ends: 181215 [2020-09-15 00:56:25,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-09-15 00:56:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-09-15 00:56:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-09-15 00:56:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-09-15 00:56:29,587 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-09-15 00:56:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:29,588 INFO L479 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-09-15 00:56:29,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-09-15 00:56:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:29,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:29,592 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:56:29,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-09-15 00:56:29,793 INFO L427 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:56:29,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:29,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-09-15 00:56:29,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:29,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050620661] [2020-09-15 00:56:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:29,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050620661] [2020-09-15 00:56:29,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878770039] [2020-09-15 00:56:29,946 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 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:30,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:56:30,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:30,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:30,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:30,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:30,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:30,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83027050] [2020-09-15 00:56:30,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:30,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:30,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:30,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:30,296 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-09-15 00:56:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:35,814 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-09-15 00:56:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:35,815 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:36,378 INFO L225 Difference]: With dead ends: 181989 [2020-09-15 00:56:36,378 INFO L226 Difference]: Without dead ends: 181965 [2020-09-15 00:56:36,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-09-15 00:56:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-09-15 00:56:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-09-15 00:56:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-09-15 00:56:45,340 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-09-15 00:56:45,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:45,340 INFO L479 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-09-15 00:56:45,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-09-15 00:56:45,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:45,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:45,344 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:56:45,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-09-15 00:56:45,545 INFO L427 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:56:45,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:45,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-09-15 00:56:45,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:45,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290748661] [2020-09-15 00:56:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:45,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290748661] [2020-09-15 00:56:45,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656770316] [2020-09-15 00:56:45,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:45,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:56:45,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:45,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:46,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:46,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:46,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998267324] [2020-09-15 00:56:46,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:46,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:46,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:46,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:46,041 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-09-15 00:56:50,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:50,640 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-09-15 00:56:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:50,641 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:51,190 INFO L225 Difference]: With dead ends: 183299 [2020-09-15 00:56:51,191 INFO L226 Difference]: Without dead ends: 183281 [2020-09-15 00:56:51,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-09-15 00:56:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-09-15 00:56:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-09-15 00:56:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-09-15 00:56:56,088 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-09-15 00:56:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:56,088 INFO L479 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-09-15 00:56:56,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-09-15 00:56:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:56,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:56,092 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:56:56,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-15 00:56:56,293 INFO L427 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:56:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:56,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-09-15 00:56:56,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:56,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074780599] [2020-09-15 00:56:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:56,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074780599] [2020-09-15 00:56:56,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579930821] [2020-09-15 00:56:56,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:56,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-15 00:56:56,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:56,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:56,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:56:56,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:56,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:56,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493793285] [2020-09-15 00:56:56,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:56,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:56,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:56,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:56,792 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-09-15 00:57:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:01,516 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-09-15 00:57:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:01,517 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:57:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:03,042 INFO L225 Difference]: With dead ends: 182890 [2020-09-15 00:57:03,042 INFO L226 Difference]: Without dead ends: 182862 [2020-09-15 00:57:03,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:57:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-09-15 00:57:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-09-15 00:57:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-09-15 00:57:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-09-15 00:57:10,489 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-09-15 00:57:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:10,489 INFO L479 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-09-15 00:57:10,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:57:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-09-15 00:57:10,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:10,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:10,494 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:57:10,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-09-15 00:57:10,694 INFO L427 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:57:10,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:10,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-09-15 00:57:10,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:10,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483728539] [2020-09-15 00:57:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:57:10,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483728539] [2020-09-15 00:57:10,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779409077] [2020-09-15 00:57:10,780 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 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:57:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:10,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:57:10,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:57:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:57:10,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:57:10,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:57:10,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805730682] [2020-09-15 00:57:10,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:57:10,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:10,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:57:10,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:57:10,989 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-09-15 00:57:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:12,156 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-09-15 00:57:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:57:12,157 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:57:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:12,450 INFO L225 Difference]: With dead ends: 88848 [2020-09-15 00:57:12,450 INFO L226 Difference]: Without dead ends: 88788 [2020-09-15 00:57:12,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:57:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-09-15 00:57:15,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-09-15 00:57:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-09-15 00:57:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-09-15 00:57:15,287 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-09-15 00:57:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:15,287 INFO L479 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-09-15 00:57:15,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:57:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-09-15 00:57:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:15,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:15,292 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:57:15,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:57:15,493 INFO L427 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:57:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:15,494 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-09-15 00:57:15,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:15,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205409041] [2020-09-15 00:57:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:57:15,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205409041] [2020-09-15 00:57:15,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310677476] [2020-09-15 00:57:15,583 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 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:57:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:15,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:57:15,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:57:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:57:15,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:57:15,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:57:15,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439374203] [2020-09-15 00:57:15,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:57:15,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:15,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:57:15,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:57:15,798 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-09-15 00:57:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:17,541 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-09-15 00:57:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:57:17,542 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:57:17,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:17,851 INFO L225 Difference]: With dead ends: 92913 [2020-09-15 00:57:17,851 INFO L226 Difference]: Without dead ends: 92836 [2020-09-15 00:57:17,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:57:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-09-15 00:57:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-09-15 00:57:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-09-15 00:57:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-09-15 00:57:20,979 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-09-15 00:57:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:20,979 INFO L479 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-09-15 00:57:20,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:57:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-09-15 00:57:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:20,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:20,985 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:57:21,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-09-15 00:57:21,195 INFO L427 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:57:21,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:21,195 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-09-15 00:57:21,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:21,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872737230] [2020-09-15 00:57:21,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:57:21,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872737230] [2020-09-15 00:57:21,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:57:21,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:57:21,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910540817] [2020-09-15 00:57:21,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:57:21,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:57:21,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:57:21,350 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-09-15 00:57:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:25,549 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-09-15 00:57:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:25,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:57:25,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:27,290 INFO L225 Difference]: With dead ends: 180696 [2020-09-15 00:57:27,290 INFO L226 Difference]: Without dead ends: 180678 [2020-09-15 00:57:27,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:57:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-09-15 00:57:34,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-09-15 00:57:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-09-15 00:57:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-09-15 00:57:34,758 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-09-15 00:57:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:34,758 INFO L479 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-09-15 00:57:34,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:57:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-09-15 00:57:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:34,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:34,764 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:57:34,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-15 00:57:34,764 INFO L427 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:57:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:34,765 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-09-15 00:57:34,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:34,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137136860] [2020-09-15 00:57:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:57:34,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137136860] [2020-09-15 00:57:34,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:57:34,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:57:34,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529829044] [2020-09-15 00:57:34,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:57:34,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:34,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:57:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:57:34,917 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-09-15 00:57:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:40,023 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-09-15 00:57:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:40,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:57:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:40,569 INFO L225 Difference]: With dead ends: 180287 [2020-09-15 00:57:40,569 INFO L226 Difference]: Without dead ends: 180263 [2020-09-15 00:57:40,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:57:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-09-15 00:57:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-09-15 00:57:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-09-15 00:57:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-09-15 00:57:45,134 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-09-15 00:57:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:45,134 INFO L479 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-09-15 00:57:45,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:57:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-09-15 00:57:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:45,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:45,142 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:57:45,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-15 00:57:45,142 INFO L427 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:57:45,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:45,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-09-15 00:57:45,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:45,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699024530] [2020-09-15 00:57:45,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:57:45,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699024530] [2020-09-15 00:57:45,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:57:45,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:57:45,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595951677] [2020-09-15 00:57:45,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:57:45,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:45,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:57:45,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:57:45,299 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-09-15 00:57:48,379 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-09-15 00:57:50,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:50,423 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-09-15 00:57:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:50,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:57:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:50,929 INFO L225 Difference]: With dead ends: 179815 [2020-09-15 00:57:50,930 INFO L226 Difference]: Without dead ends: 179797 [2020-09-15 00:57:50,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:57:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-09-15 00:57:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-09-15 00:57:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-09-15 00:57:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-09-15 00:57:59,994 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-09-15 00:57:59,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:59,995 INFO L479 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-09-15 00:57:59,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:57:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-09-15 00:58:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:00,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:00,001 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:00,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-15 00:58:00,001 INFO L427 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-09-15 00:58:00,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:00,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949516631] [2020-09-15 00:58:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:58:00,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949516631] [2020-09-15 00:58:00,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:00,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:58:00,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520765106] [2020-09-15 00:58:00,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:58:00,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:00,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:58:00,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:58:00,144 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-09-15 00:58:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:04,450 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-09-15 00:58:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:58:04,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:58:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:04,975 INFO L225 Difference]: With dead ends: 179585 [2020-09-15 00:58:04,976 INFO L226 Difference]: Without dead ends: 179561 [2020-09-15 00:58:04,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:58:07,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-09-15 00:58:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-09-15 00:58:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-09-15 00:58:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-09-15 00:58:10,052 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-09-15 00:58:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:10,052 INFO L479 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-09-15 00:58:10,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:58:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-09-15 00:58:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:10,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:10,058 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:10,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-15 00:58:10,058 INFO L427 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:10,058 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-09-15 00:58:10,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:10,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840334282] [2020-09-15 00:58:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:58:10,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840334282] [2020-09-15 00:58:10,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:10,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:58:10,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991839717] [2020-09-15 00:58:10,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:58:10,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:10,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:58:10,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:58:10,215 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-09-15 00:58:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:14,605 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-09-15 00:58:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:58:14,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:58:14,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:15,134 INFO L225 Difference]: With dead ends: 179113 [2020-09-15 00:58:15,134 INFO L226 Difference]: Without dead ends: 179095 [2020-09-15 00:58:15,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:58:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-09-15 00:58:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-09-15 00:58:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-09-15 00:58:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-09-15 00:58:23,526 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-09-15 00:58:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:23,526 INFO L479 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-09-15 00:58:23,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:58:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-09-15 00:58:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:23,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:23,531 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:23,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-15 00:58:23,531 INFO L427 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:23,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:23,532 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-09-15 00:58:23,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:23,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405914890] [2020-09-15 00:58:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:58:23,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405914890] [2020-09-15 00:58:23,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:23,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:58:23,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463660123] [2020-09-15 00:58:23,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:58:23,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:58:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:58:23,683 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-09-15 00:58:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:28,219 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-09-15 00:58:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:58:28,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:58:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:29,673 INFO L225 Difference]: With dead ends: 178704 [2020-09-15 00:58:29,673 INFO L226 Difference]: Without dead ends: 178675 [2020-09-15 00:58:29,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:58:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-09-15 00:58:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-09-15 00:58:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-09-15 00:58:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-09-15 00:58:33,973 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-09-15 00:58:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:33,973 INFO L479 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-09-15 00:58:33,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:58:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-09-15 00:58:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:33,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:33,979 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:33,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-15 00:58:33,979 INFO L427 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-09-15 00:58:33,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:33,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696509177] [2020-09-15 00:58:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:58:34,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696509177] [2020-09-15 00:58:34,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:34,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:34,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850320383] [2020-09-15 00:58:34,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:34,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:34,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:34,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:34,077 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-09-15 00:58:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:35,122 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-09-15 00:58:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:35,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:35,441 INFO L225 Difference]: With dead ends: 90966 [2020-09-15 00:58:35,441 INFO L226 Difference]: Without dead ends: 90889 [2020-09-15 00:58:35,441 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 [2020-09-15 00:58:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-09-15 00:58:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-09-15 00:58:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-09-15 00:58:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-09-15 00:58:38,338 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-09-15 00:58:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:38,338 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-09-15 00:58:38,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-09-15 00:58:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:38,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:38,344 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:38,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-15 00:58:38,344 INFO L427 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:38,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-09-15 00:58:38,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:38,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933121018] [2020-09-15 00:58:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:58:38,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933121018] [2020-09-15 00:58:38,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:38,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:38,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895997517] [2020-09-15 00:58:38,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:38,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:38,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:38,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:38,437 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-09-15 00:58:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:39,907 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-09-15 00:58:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:39,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:40,243 INFO L225 Difference]: With dead ends: 91560 [2020-09-15 00:58:40,243 INFO L226 Difference]: Without dead ends: 91483 [2020-09-15 00:58:40,243 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 [2020-09-15 00:58:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-09-15 00:58:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-09-15 00:58:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-09-15 00:58:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-09-15 00:58:43,217 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-09-15 00:58:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:43,217 INFO L479 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-09-15 00:58:43,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-09-15 00:58:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:43,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:43,223 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:43,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-15 00:58:43,223 INFO L427 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-09-15 00:58:43,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:43,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008171792] [2020-09-15 00:58:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:58:43,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008171792] [2020-09-15 00:58:43,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:43,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:43,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620220124] [2020-09-15 00:58:43,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:43,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:43,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:43,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:43,313 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-09-15 00:58:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:44,343 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-09-15 00:58:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:44,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:44,659 INFO L225 Difference]: With dead ends: 92674 [2020-09-15 00:58:44,659 INFO L226 Difference]: Without dead ends: 92597 [2020-09-15 00:58:44,659 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 [2020-09-15 00:58:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-09-15 00:58:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-09-15 00:58:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-09-15 00:58:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-09-15 00:58:47,708 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-09-15 00:58:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:47,708 INFO L479 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-09-15 00:58:47,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-09-15 00:58:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:47,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:47,714 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:47,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-15 00:58:47,714 INFO L427 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:47,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-09-15 00:58:47,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:47,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997776732] [2020-09-15 00:58:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:58:47,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997776732] [2020-09-15 00:58:47,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:47,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:47,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261056454] [2020-09-15 00:58:47,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:47,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:47,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:47,812 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-09-15 00:58:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:48,853 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-09-15 00:58:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:48,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:49,180 INFO L225 Difference]: With dead ends: 93922 [2020-09-15 00:58:49,180 INFO L226 Difference]: Without dead ends: 93845 [2020-09-15 00:58:49,180 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 [2020-09-15 00:58:50,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-09-15 00:58:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-09-15 00:58:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-15 00:58:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-15 00:58:52,167 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-15 00:58:52,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:52,167 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-15 00:58:52,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-15 00:58:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:58:52,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:52,174 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:58:52,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-15 00:58:52,175 INFO L427 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:58:52,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:52,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-09-15 00:58:52,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:52,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185356549] [2020-09-15 00:58:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:58:52,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185356549] [2020-09-15 00:58:52,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971558428] [2020-09-15 00:58:52,302 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 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:58:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:52,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:58:52,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:58:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:58:52,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:58:52,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:58:52,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103702901] [2020-09-15 00:58:52,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:58:52,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:52,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:58:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:58:52,594 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-09-15 00:58:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:55,244 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-09-15 00:58:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:58:55,245 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:58:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:55,667 INFO L225 Difference]: With dead ends: 140781 [2020-09-15 00:58:55,668 INFO L226 Difference]: Without dead ends: 140737 [2020-09-15 00:58:55,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:58:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-09-15 00:59:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-09-15 00:59:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-09-15 00:59:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-09-15 00:59:02,347 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-09-15 00:59:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:59:02,347 INFO L479 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-09-15 00:59:02,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:59:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-09-15 00:59:02,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:59:02,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:59:02,356 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:59:02,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:02,557 INFO L427 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:59:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:59:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-09-15 00:59:02,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:59:02,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627884146] [2020-09-15 00:59:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:59:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:59:02,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627884146] [2020-09-15 00:59:02,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883025475] [2020-09-15 00:59:02,691 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 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:02,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:59:02,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:59:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:59:02,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:59:02,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:59:02,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378062572] [2020-09-15 00:59:02,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:59:02,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:59:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:59:02,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:59:02,964 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-09-15 00:59:05,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:59:05,936 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-09-15 00:59:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:59:05,937 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:59:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:59:06,388 INFO L225 Difference]: With dead ends: 139468 [2020-09-15 00:59:06,388 INFO L226 Difference]: Without dead ends: 139424 [2020-09-15 00:59:06,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:59:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-09-15 00:59:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-09-15 00:59:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-09-15 00:59:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-09-15 00:59:10,280 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-09-15 00:59:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:59:10,280 INFO L479 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-09-15 00:59:10,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:59:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-09-15 00:59:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:59:10,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:59:10,288 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:59:10,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:10,489 INFO L427 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:59:10,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:59:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-09-15 00:59:10,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:59:10,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231164812] [2020-09-15 00:59:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:59:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:59:10,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231164812] [2020-09-15 00:59:10,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323587395] [2020-09-15 00:59:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:10,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:59:10,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:59:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:59:10,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:59:10,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:59:10,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627115617] [2020-09-15 00:59:10,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:59:10,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:59:10,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:59:10,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:59:10,893 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-09-15 00:59:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:59:13,314 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-09-15 00:59:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:59:13,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:59:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:59:13,794 INFO L225 Difference]: With dead ends: 138170 [2020-09-15 00:59:13,794 INFO L226 Difference]: Without dead ends: 138126 [2020-09-15 00:59:13,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:59:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-09-15 00:59:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-09-15 00:59:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states.