/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:17:15,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:17:15,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:17:15,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:17:15,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:17:15,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:17:15,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:17:15,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:17:15,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:17:15,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:17:15,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:17:15,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:17:15,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:17:15,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:17:15,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:17:15,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:17:15,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:17:15,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:17:15,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:17:15,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:17:15,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:17:15,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:17:15,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:17:15,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:17:15,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:17:15,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:17:15,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:17:15,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:17:15,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:17:15,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:17:15,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:17:15,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:17:15,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:17:15,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:17:15,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:17:15,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:17:15,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:17:15,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:17:15,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:17:15,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:17:15,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:17:15,934 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:17:15,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:17:15,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:17:15,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:17:15,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:17:15,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:17:15,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:17:15,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:17:15,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:17:15,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:17:15,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:17:15,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:17:15,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:17:15,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:17:15,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:17:15,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:17:15,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:17:15,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:17:15,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:17:15,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:17:15,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:17:15,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:17:15,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:17:15,940 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:17:15,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:17:16,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:17:16,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:17:16,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:17:16,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:17:16,226 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:17:16,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-16 12:17:16,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8197ac96e/bcc3c5d4e47d4b4e9c866259f2a7c65d/FLAG0b01fa147 [2020-10-16 12:17:16,915 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:17:16,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-16 12:17:16,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8197ac96e/bcc3c5d4e47d4b4e9c866259f2a7c65d/FLAG0b01fa147 [2020-10-16 12:17:17,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8197ac96e/bcc3c5d4e47d4b4e9c866259f2a7c65d [2020-10-16 12:17:17,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:17:17,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:17:17,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:17:17,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:17:17,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:17:17,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:17:17" (1/1) ... [2020-10-16 12:17:17,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7a4bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:17, skipping insertion in model container [2020-10-16 12:17:17,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:17:17" (1/1) ... [2020-10-16 12:17:17,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:17:17,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:17:17,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:17:17,851 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:17:17,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:17:18,150 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:17:18,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18 WrapperNode [2020-10-16 12:17:18,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:17:18,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:17:18,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:17:18,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:17:18,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:17:18,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:17:18,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:17:18,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:17:18,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (1/1) ... [2020-10-16 12:17:18,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:17:18,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:17:18,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:17:18,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:17:18,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (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 [2020-10-16 12:17:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:17:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:17:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:17:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:17:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 12:17:18,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2020-10-16 12:17:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2020-10-16 12:17:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 12:17:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:17:18,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:17:18,464 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:17:19,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:17:19,164 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:17:19,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:17:19 BoogieIcfgContainer [2020-10-16 12:17:19,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:17:19,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:17:19,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:17:19,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:17:19,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:17:17" (1/3) ... [2020-10-16 12:17:19,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e93141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:17:19, skipping insertion in model container [2020-10-16 12:17:19,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:18" (2/3) ... [2020-10-16 12:17:19,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e93141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:17:19, skipping insertion in model container [2020-10-16 12:17:19,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:17:19" (3/3) ... [2020-10-16 12:17:19,176 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2020-10-16 12:17:19,188 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:17:19,189 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:17:19,197 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:17:19,198 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:17:19,231 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,232 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,232 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,232 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,232 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,233 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,233 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,233 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,234 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,234 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,234 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,235 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,235 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,236 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,236 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,236 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,236 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,237 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,237 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,237 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,237 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,237 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,238 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,242 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,243 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,243 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,243 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,243 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,244 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,244 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,244 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,244 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:19,252 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-16 12:17:19,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:17:19,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:17:19,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:17:19,286 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:17:19,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:17:19,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:17:19,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:17:19,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:17:19,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:17:19,305 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:17:19,306 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 81 transitions, 170 flow [2020-10-16 12:17:19,308 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 81 transitions, 170 flow [2020-10-16 12:17:19,310 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 170 flow [2020-10-16 12:17:19,350 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-10-16 12:17:19,350 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 12:17:19,356 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 7/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-10-16 12:17:19,360 INFO L117 LiptonReduction]: Number of co-enabled transitions 646 [2020-10-16 12:17:21,097 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-16 12:17:21,268 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-16 12:17:21,845 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-16 12:17:22,073 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-16 12:17:22,087 INFO L132 LiptonReduction]: Checked pairs total: 823 [2020-10-16 12:17:22,087 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-16 12:17:22,094 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 17 transitions, 42 flow [2020-10-16 12:17:22,102 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 35 states. [2020-10-16 12:17:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-16 12:17:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:17:22,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:22,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:22,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:22,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:22,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1717538151, now seen corresponding path program 1 times [2020-10-16 12:17:22,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:22,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936420604] [2020-10-16 12:17:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:22,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936420604] [2020-10-16 12:17:22,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:17:22,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:17:22,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249717670] [2020-10-16 12:17:22,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:17:22,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:22,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:17:22,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:17:22,337 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-16 12:17:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:22,368 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2020-10-16 12:17:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:17:22,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:17:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:22,382 INFO L225 Difference]: With dead ends: 52 [2020-10-16 12:17:22,382 INFO L226 Difference]: Without dead ends: 52 [2020-10-16 12:17:22,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:17:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-16 12:17:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-16 12:17:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 12:17:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2020-10-16 12:17:22,427 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 8 [2020-10-16 12:17:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:22,427 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2020-10-16 12:17:22,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:17:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2020-10-16 12:17:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:17:22,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:22,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:22,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:17:22,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:22,430 INFO L82 PathProgramCache]: Analyzing trace with hash 62706239, now seen corresponding path program 1 times [2020-10-16 12:17:22,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:22,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559385923] [2020-10-16 12:17:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:22,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559385923] [2020-10-16 12:17:22,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:17:22,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:17:22,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107790292] [2020-10-16 12:17:22,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:17:22,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:22,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:17:22,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:17:22,503 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 3 states. [2020-10-16 12:17:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:22,523 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2020-10-16 12:17:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:17:22,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:17:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:22,525 INFO L225 Difference]: With dead ends: 64 [2020-10-16 12:17:22,525 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 12:17:22,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:17:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 12:17:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2020-10-16 12:17:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-16 12:17:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2020-10-16 12:17:22,534 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 11 [2020-10-16 12:17:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:22,534 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2020-10-16 12:17:22,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:17:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2020-10-16 12:17:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:17:22,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:22,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:22,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:17:22,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:22,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:22,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1954756591, now seen corresponding path program 1 times [2020-10-16 12:17:22,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:22,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682101158] [2020-10-16 12:17:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:22,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682101158] [2020-10-16 12:17:22,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033024652] [2020-10-16 12:17:22,621 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 [2020-10-16 12:17:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:22,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-16 12:17:22,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:22,757 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-16 12:17:22,757 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:17:22,762 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:17:22,763 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:17:22,763 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-16 12:17:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:22,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:17:22,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-16 12:17:22,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823054129] [2020-10-16 12:17:22,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:17:22,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:17:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:17:22,784 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand 3 states. [2020-10-16 12:17:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:22,799 INFO L93 Difference]: Finished difference Result 40 states and 66 transitions. [2020-10-16 12:17:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:17:22,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-16 12:17:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:22,800 INFO L225 Difference]: With dead ends: 40 [2020-10-16 12:17:22,800 INFO L226 Difference]: Without dead ends: 40 [2020-10-16 12:17:22,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:17:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-16 12:17:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-16 12:17:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 12:17:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-16 12:17:22,806 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 15 [2020-10-16 12:17:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:22,806 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-16 12:17:22,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:17:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-16 12:17:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:17:22,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:22,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:23,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 12:17:23,021 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash 525517821, now seen corresponding path program 2 times [2020-10-16 12:17:23,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:23,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795265983] [2020-10-16 12:17:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:23,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795265983] [2020-10-16 12:17:23,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224210410] [2020-10-16 12:17:23,102 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:23,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:17:23,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:23,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-16 12:17:23,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:23,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:23,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 12:17:23,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536098723] [2020-10-16 12:17:23,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:17:23,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:23,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:17:23,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:17:23,215 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 6 states. [2020-10-16 12:17:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:23,350 INFO L93 Difference]: Finished difference Result 104 states and 159 transitions. [2020-10-16 12:17:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:17:23,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 12:17:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:23,353 INFO L225 Difference]: With dead ends: 104 [2020-10-16 12:17:23,354 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 12:17:23,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:17:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 12:17:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2020-10-16 12:17:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 12:17:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 124 transitions. [2020-10-16 12:17:23,364 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 124 transitions. Word has length 15 [2020-10-16 12:17:23,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:23,364 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 124 transitions. [2020-10-16 12:17:23,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:17:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 124 transitions. [2020-10-16 12:17:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:17:23,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:23,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:23,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:23,571 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:23,572 INFO L82 PathProgramCache]: Analyzing trace with hash 485096059, now seen corresponding path program 3 times [2020-10-16 12:17:23,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:23,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335635747] [2020-10-16 12:17:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:17:23,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335635747] [2020-10-16 12:17:23,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249765057] [2020-10-16 12:17:23,651 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:23,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:17:23,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:23,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:17:23,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 12:17:23,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:23,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-16 12:17:23,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000489032] [2020-10-16 12:17:23,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:17:23,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:23,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:17:23,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:17:23,742 INFO L87 Difference]: Start difference. First operand 79 states and 124 transitions. Second operand 6 states. [2020-10-16 12:17:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:23,773 INFO L93 Difference]: Finished difference Result 110 states and 168 transitions. [2020-10-16 12:17:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:17:23,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-16 12:17:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:23,775 INFO L225 Difference]: With dead ends: 110 [2020-10-16 12:17:23,775 INFO L226 Difference]: Without dead ends: 110 [2020-10-16 12:17:23,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:17:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-16 12:17:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2020-10-16 12:17:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-16 12:17:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 154 transitions. [2020-10-16 12:17:23,785 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 154 transitions. Word has length 22 [2020-10-16 12:17:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:23,785 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 154 transitions. [2020-10-16 12:17:23,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:17:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 154 transitions. [2020-10-16 12:17:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:17:23,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:23,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:24,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:24,002 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:24,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2041399383, now seen corresponding path program 4 times [2020-10-16 12:17:24,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:24,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104826187] [2020-10-16 12:17:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 12:17:24,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104826187] [2020-10-16 12:17:24,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691984692] [2020-10-16 12:17:24,063 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:24,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:17:24,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:24,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:17:24,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 12:17:24,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:24,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-16 12:17:24,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927793521] [2020-10-16 12:17:24,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:17:24,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:24,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:17:24,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:17:24,171 INFO L87 Difference]: Start difference. First operand 100 states and 154 transitions. Second operand 6 states. [2020-10-16 12:17:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:24,193 INFO L93 Difference]: Finished difference Result 148 states and 220 transitions. [2020-10-16 12:17:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:17:24,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-16 12:17:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:24,194 INFO L225 Difference]: With dead ends: 148 [2020-10-16 12:17:24,195 INFO L226 Difference]: Without dead ends: 148 [2020-10-16 12:17:24,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:17:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-16 12:17:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2020-10-16 12:17:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 12:17:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 196 transitions. [2020-10-16 12:17:24,205 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 196 transitions. Word has length 25 [2020-10-16 12:17:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:24,205 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 196 transitions. [2020-10-16 12:17:24,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:17:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 196 transitions. [2020-10-16 12:17:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:17:24,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:24,207 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:24,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:24,423 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:24,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:24,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1548321815, now seen corresponding path program 5 times [2020-10-16 12:17:24,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:24,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168121764] [2020-10-16 12:17:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 12:17:24,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168121764] [2020-10-16 12:17:24,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165572044] [2020-10-16 12:17:24,483 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:24,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 12:17:24,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:24,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-16 12:17:24,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 12:17:24,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:24,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-16 12:17:24,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809238444] [2020-10-16 12:17:24,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:17:24,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:17:24,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:17:24,577 INFO L87 Difference]: Start difference. First operand 130 states and 196 transitions. Second operand 7 states. [2020-10-16 12:17:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:24,622 INFO L93 Difference]: Finished difference Result 178 states and 262 transitions. [2020-10-16 12:17:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:17:24,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-16 12:17:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:24,624 INFO L225 Difference]: With dead ends: 178 [2020-10-16 12:17:24,624 INFO L226 Difference]: Without dead ends: 178 [2020-10-16 12:17:24,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:17:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-16 12:17:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 160. [2020-10-16 12:17:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:17:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 238 transitions. [2020-10-16 12:17:24,634 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 238 transitions. Word has length 29 [2020-10-16 12:17:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:24,634 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 238 transitions. [2020-10-16 12:17:24,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:17:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 238 transitions. [2020-10-16 12:17:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:17:24,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:24,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:24,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-16 12:17:24,850 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:24,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:24,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2012714619, now seen corresponding path program 6 times [2020-10-16 12:17:24,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:24,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520083380] [2020-10-16 12:17:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 12:17:24,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520083380] [2020-10-16 12:17:24,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657918309] [2020-10-16 12:17:24,922 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:25,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-16 12:17:25,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:25,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-16 12:17:25,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-16 12:17:25,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:25,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-10-16 12:17:25,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038104360] [2020-10-16 12:17:25,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:17:25,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:25,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:17:25,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:17:25,081 INFO L87 Difference]: Start difference. First operand 160 states and 238 transitions. Second operand 11 states. [2020-10-16 12:17:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:25,489 INFO L93 Difference]: Finished difference Result 266 states and 378 transitions. [2020-10-16 12:17:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:17:25,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-16 12:17:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:25,492 INFO L225 Difference]: With dead ends: 266 [2020-10-16 12:17:25,492 INFO L226 Difference]: Without dead ends: 266 [2020-10-16 12:17:25,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:17:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-16 12:17:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 229. [2020-10-16 12:17:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-16 12:17:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 331 transitions. [2020-10-16 12:17:25,503 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 331 transitions. Word has length 33 [2020-10-16 12:17:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:25,504 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 331 transitions. [2020-10-16 12:17:25,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:17:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 331 transitions. [2020-10-16 12:17:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-16 12:17:25,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:25,506 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:25,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:25,721 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:25,721 INFO L82 PathProgramCache]: Analyzing trace with hash -480954575, now seen corresponding path program 7 times [2020-10-16 12:17:25,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:25,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211740414] [2020-10-16 12:17:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:17:25,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211740414] [2020-10-16 12:17:25,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913029097] [2020-10-16 12:17:25,798 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:25,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:17:25,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:17:25,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:25,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-16 12:17:25,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151944847] [2020-10-16 12:17:25,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:17:25,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:25,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:17:25,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:17:25,899 INFO L87 Difference]: Start difference. First operand 229 states and 331 transitions. Second operand 9 states. [2020-10-16 12:17:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:25,937 INFO L93 Difference]: Finished difference Result 286 states and 407 transitions. [2020-10-16 12:17:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:17:25,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-16 12:17:25,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:25,940 INFO L225 Difference]: With dead ends: 286 [2020-10-16 12:17:25,940 INFO L226 Difference]: Without dead ends: 286 [2020-10-16 12:17:25,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:17:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-16 12:17:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 265. [2020-10-16 12:17:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-16 12:17:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 380 transitions. [2020-10-16 12:17:25,970 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 380 transitions. Word has length 40 [2020-10-16 12:17:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:25,970 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 380 transitions. [2020-10-16 12:17:25,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:17:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 380 transitions. [2020-10-16 12:17:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-16 12:17:25,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:25,973 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:26,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:26,187 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:26,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:26,188 INFO L82 PathProgramCache]: Analyzing trace with hash -870694653, now seen corresponding path program 8 times [2020-10-16 12:17:26,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:26,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907698903] [2020-10-16 12:17:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:17:26,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907698903] [2020-10-16 12:17:26,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393531425] [2020-10-16 12:17:26,289 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:26,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:17:26,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:26,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:17:26,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:17:26,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:26,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-16 12:17:26,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790811022] [2020-10-16 12:17:26,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:17:26,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:26,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:17:26,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:17:26,412 INFO L87 Difference]: Start difference. First operand 265 states and 380 transitions. Second operand 10 states. [2020-10-16 12:17:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:26,448 INFO L93 Difference]: Finished difference Result 322 states and 456 transitions. [2020-10-16 12:17:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:17:26,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-16 12:17:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:26,450 INFO L225 Difference]: With dead ends: 322 [2020-10-16 12:17:26,450 INFO L226 Difference]: Without dead ends: 322 [2020-10-16 12:17:26,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:17:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-16 12:17:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 301. [2020-10-16 12:17:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-16 12:17:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2020-10-16 12:17:26,458 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 44 [2020-10-16 12:17:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:26,459 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2020-10-16 12:17:26,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:17:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2020-10-16 12:17:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-16 12:17:26,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:26,461 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:26,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 12:17:26,677 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1422004693, now seen corresponding path program 9 times [2020-10-16 12:17:26,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:26,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945646415] [2020-10-16 12:17:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 91 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 12:17:26,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945646415] [2020-10-16 12:17:26,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478209668] [2020-10-16 12:17:26,770 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:26,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-16 12:17:26,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:26,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 12:17:26,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-16 12:17:26,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:26,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-10-16 12:17:26,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199097605] [2020-10-16 12:17:26,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:17:26,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:26,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:17:26,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:17:26,948 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand 15 states. [2020-10-16 12:17:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:27,876 INFO L93 Difference]: Finished difference Result 440 states and 606 transitions. [2020-10-16 12:17:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-16 12:17:27,876 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-16 12:17:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:27,879 INFO L225 Difference]: With dead ends: 440 [2020-10-16 12:17:27,879 INFO L226 Difference]: Without dead ends: 440 [2020-10-16 12:17:27,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=945, Invalid=2025, Unknown=0, NotChecked=0, Total=2970 [2020-10-16 12:17:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-16 12:17:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 394. [2020-10-16 12:17:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-16 12:17:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 550 transitions. [2020-10-16 12:17:27,890 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 550 transitions. Word has length 48 [2020-10-16 12:17:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:27,890 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 550 transitions. [2020-10-16 12:17:27,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:17:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 550 transitions. [2020-10-16 12:17:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-16 12:17:27,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:27,892 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:28,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:28,108 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash 314386685, now seen corresponding path program 10 times [2020-10-16 12:17:28,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:28,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737486638] [2020-10-16 12:17:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 120 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-16 12:17:28,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737486638] [2020-10-16 12:17:28,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503247168] [2020-10-16 12:17:28,228 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:28,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:17:28,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:28,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:17:28,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 120 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-16 12:17:28,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:28,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-16 12:17:28,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204200265] [2020-10-16 12:17:28,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:17:28,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:28,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:17:28,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:17:28,405 INFO L87 Difference]: Start difference. First operand 394 states and 550 transitions. Second operand 12 states. [2020-10-16 12:17:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:28,459 INFO L93 Difference]: Finished difference Result 460 states and 636 transitions. [2020-10-16 12:17:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:17:28,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-16 12:17:28,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:28,462 INFO L225 Difference]: With dead ends: 460 [2020-10-16 12:17:28,462 INFO L226 Difference]: Without dead ends: 460 [2020-10-16 12:17:28,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:17:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-16 12:17:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 436. [2020-10-16 12:17:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-16 12:17:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 606 transitions. [2020-10-16 12:17:28,478 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 606 transitions. Word has length 55 [2020-10-16 12:17:28,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:28,478 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 606 transitions. [2020-10-16 12:17:28,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:17:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 606 transitions. [2020-10-16 12:17:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-16 12:17:28,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:28,480 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:28,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:28,696 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:28,697 INFO L82 PathProgramCache]: Analyzing trace with hash 298647787, now seen corresponding path program 11 times [2020-10-16 12:17:28,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:28,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68257081] [2020-10-16 12:17:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 13 proven. 153 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-16 12:17:28,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68257081] [2020-10-16 12:17:28,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698530818] [2020-10-16 12:17:28,815 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:28,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-16 12:17:28,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:28,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:17:28,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 13 proven. 153 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-16 12:17:28,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:28,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-16 12:17:28,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659288721] [2020-10-16 12:17:28,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:17:28,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:28,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:17:28,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:17:28,966 INFO L87 Difference]: Start difference. First operand 436 states and 606 transitions. Second operand 13 states. [2020-10-16 12:17:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:29,017 INFO L93 Difference]: Finished difference Result 502 states and 692 transitions. [2020-10-16 12:17:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:17:29,018 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-16 12:17:29,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:29,021 INFO L225 Difference]: With dead ends: 502 [2020-10-16 12:17:29,021 INFO L226 Difference]: Without dead ends: 502 [2020-10-16 12:17:29,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:17:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-16 12:17:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-10-16 12:17:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-16 12:17:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 662 transitions. [2020-10-16 12:17:29,032 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 662 transitions. Word has length 59 [2020-10-16 12:17:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:29,033 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 662 transitions. [2020-10-16 12:17:29,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:17:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 662 transitions. [2020-10-16 12:17:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-16 12:17:29,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:29,035 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:29,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 12:17:29,250 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:29,251 INFO L82 PathProgramCache]: Analyzing trace with hash -734842407, now seen corresponding path program 12 times [2020-10-16 12:17:29,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:29,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513217117] [2020-10-16 12:17:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 13 proven. 190 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-16 12:17:29,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513217117] [2020-10-16 12:17:29,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66041033] [2020-10-16 12:17:29,382 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:29,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-16 12:17:29,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:29,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:17:29,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-16 12:17:29,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:29,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-10-16 12:17:29,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631495265] [2020-10-16 12:17:29,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:17:29,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:29,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:17:29,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:17:29,608 INFO L87 Difference]: Start difference. First operand 478 states and 662 transitions. Second operand 19 states. [2020-10-16 12:17:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:31,390 INFO L93 Difference]: Finished difference Result 650 states and 876 transitions. [2020-10-16 12:17:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-16 12:17:31,392 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-16 12:17:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:31,396 INFO L225 Difference]: With dead ends: 650 [2020-10-16 12:17:31,396 INFO L226 Difference]: Without dead ends: 650 [2020-10-16 12:17:31,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2184, Invalid=4956, Unknown=0, NotChecked=0, Total=7140 [2020-10-16 12:17:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-16 12:17:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 595. [2020-10-16 12:17:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-16 12:17:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 811 transitions. [2020-10-16 12:17:31,416 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 811 transitions. Word has length 63 [2020-10-16 12:17:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:31,416 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 811 transitions. [2020-10-16 12:17:31,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:17:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 811 transitions. [2020-10-16 12:17:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-16 12:17:31,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:31,420 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:31,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-16 12:17:31,636 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1647338205, now seen corresponding path program 13 times [2020-10-16 12:17:31,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:31,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525742420] [2020-10-16 12:17:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-16 12:17:31,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525742420] [2020-10-16 12:17:31,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774561094] [2020-10-16 12:17:31,838 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:31,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:17:31,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-16 12:17:31,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:31,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-16 12:17:31,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941047545] [2020-10-16 12:17:31,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:17:31,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:31,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:17:31,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:17:31,962 INFO L87 Difference]: Start difference. First operand 595 states and 811 transitions. Second operand 15 states. [2020-10-16 12:17:32,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:32,009 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2020-10-16 12:17:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:17:32,010 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-10-16 12:17:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:32,013 INFO L225 Difference]: With dead ends: 670 [2020-10-16 12:17:32,013 INFO L226 Difference]: Without dead ends: 670 [2020-10-16 12:17:32,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:17:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-16 12:17:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 643. [2020-10-16 12:17:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-16 12:17:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 874 transitions. [2020-10-16 12:17:32,030 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 874 transitions. Word has length 70 [2020-10-16 12:17:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:32,030 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 874 transitions. [2020-10-16 12:17:32,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:17:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 874 transitions. [2020-10-16 12:17:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-16 12:17:32,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:32,032 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:32,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 12:17:32,245 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:32,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1171001041, now seen corresponding path program 14 times [2020-10-16 12:17:32,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:32,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787688829] [2020-10-16 12:17:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 16 proven. 276 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-16 12:17:32,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787688829] [2020-10-16 12:17:32,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670275057] [2020-10-16 12:17:32,430 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:32,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:17:32,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:32,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:17:32,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 16 proven. 276 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-16 12:17:32,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:32,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-16 12:17:32,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070753397] [2020-10-16 12:17:32,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:17:32,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:32,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:17:32,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:17:32,568 INFO L87 Difference]: Start difference. First operand 643 states and 874 transitions. Second operand 16 states. [2020-10-16 12:17:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:32,619 INFO L93 Difference]: Finished difference Result 718 states and 970 transitions. [2020-10-16 12:17:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:17:32,620 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-16 12:17:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:32,623 INFO L225 Difference]: With dead ends: 718 [2020-10-16 12:17:32,623 INFO L226 Difference]: Without dead ends: 718 [2020-10-16 12:17:32,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:17:32,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-16 12:17:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 691. [2020-10-16 12:17:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-16 12:17:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 937 transitions. [2020-10-16 12:17:32,637 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 937 transitions. Word has length 74 [2020-10-16 12:17:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:32,638 INFO L481 AbstractCegarLoop]: Abstraction has 691 states and 937 transitions. [2020-10-16 12:17:32,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:17:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 937 transitions. [2020-10-16 12:17:32,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-16 12:17:32,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:32,640 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:32,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:32,855 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:32,856 INFO L82 PathProgramCache]: Analyzing trace with hash 776210049, now seen corresponding path program 15 times [2020-10-16 12:17:32,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:32,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266622320] [2020-10-16 12:17:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 16 proven. 325 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-16 12:17:33,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266622320] [2020-10-16 12:17:33,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501847085] [2020-10-16 12:17:33,059 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:33,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-16 12:17:33,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:33,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:17:33,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-16 12:17:33,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:33,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 23 [2020-10-16 12:17:33,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710015902] [2020-10-16 12:17:33,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:17:33,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:33,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:17:33,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:17:33,283 INFO L87 Difference]: Start difference. First operand 691 states and 937 transitions. Second operand 23 states. [2020-10-16 12:17:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:36,484 INFO L93 Difference]: Finished difference Result 896 states and 1188 transitions. [2020-10-16 12:17:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-16 12:17:36,485 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 78 [2020-10-16 12:17:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:36,489 INFO L225 Difference]: With dead ends: 896 [2020-10-16 12:17:36,489 INFO L226 Difference]: Without dead ends: 896 [2020-10-16 12:17:36,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4844 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4320, Invalid=10200, Unknown=0, NotChecked=0, Total=14520 [2020-10-16 12:17:36,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-16 12:17:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 832. [2020-10-16 12:17:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-16 12:17:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1114 transitions. [2020-10-16 12:17:36,508 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1114 transitions. Word has length 78 [2020-10-16 12:17:36,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:36,509 INFO L481 AbstractCegarLoop]: Abstraction has 832 states and 1114 transitions. [2020-10-16 12:17:36,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:17:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1114 transitions. [2020-10-16 12:17:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-16 12:17:36,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:36,511 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:36,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 12:17:36,725 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1559138385, now seen corresponding path program 16 times [2020-10-16 12:17:36,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:36,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829415340] [2020-10-16 12:17:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 19 proven. 378 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-16 12:17:36,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829415340] [2020-10-16 12:17:36,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430170172] [2020-10-16 12:17:36,918 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:37,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:17:37,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:37,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:17:37,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 19 proven. 378 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-16 12:17:37,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:37,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-16 12:17:37,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956357914] [2020-10-16 12:17:37,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:17:37,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:37,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:17:37,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:17:37,148 INFO L87 Difference]: Start difference. First operand 832 states and 1114 transitions. Second operand 18 states. [2020-10-16 12:17:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:37,209 INFO L93 Difference]: Finished difference Result 916 states and 1220 transitions. [2020-10-16 12:17:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:17:37,210 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-16 12:17:37,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:37,215 INFO L225 Difference]: With dead ends: 916 [2020-10-16 12:17:37,215 INFO L226 Difference]: Without dead ends: 916 [2020-10-16 12:17:37,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:17:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-16 12:17:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 886. [2020-10-16 12:17:37,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-10-16 12:17:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1184 transitions. [2020-10-16 12:17:37,243 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1184 transitions. Word has length 85 [2020-10-16 12:17:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:37,243 INFO L481 AbstractCegarLoop]: Abstraction has 886 states and 1184 transitions. [2020-10-16 12:17:37,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:17:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1184 transitions. [2020-10-16 12:17:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-16 12:17:37,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:37,245 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:37,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:17:37,460 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:37,460 INFO L82 PathProgramCache]: Analyzing trace with hash -933866561, now seen corresponding path program 17 times [2020-10-16 12:17:37,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:37,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582859762] [2020-10-16 12:17:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 435 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-16 12:17:37,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582859762] [2020-10-16 12:17:37,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170405971] [2020-10-16 12:17:37,761 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:37,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-16 12:17:37,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:37,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:17:37,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 435 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-16 12:17:38,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:38,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-16 12:17:38,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358340548] [2020-10-16 12:17:38,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:17:38,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:38,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:17:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:17:38,003 INFO L87 Difference]: Start difference. First operand 886 states and 1184 transitions. Second operand 19 states. [2020-10-16 12:17:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:38,076 INFO L93 Difference]: Finished difference Result 970 states and 1290 transitions. [2020-10-16 12:17:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:17:38,076 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-16 12:17:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:38,080 INFO L225 Difference]: With dead ends: 970 [2020-10-16 12:17:38,080 INFO L226 Difference]: Without dead ends: 970 [2020-10-16 12:17:38,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:17:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-16 12:17:38,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 940. [2020-10-16 12:17:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-16 12:17:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1254 transitions. [2020-10-16 12:17:38,095 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1254 transitions. Word has length 89 [2020-10-16 12:17:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:38,095 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 1254 transitions. [2020-10-16 12:17:38,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:17:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1254 transitions. [2020-10-16 12:17:38,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-16 12:17:38,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:38,098 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:38,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:38,313 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:38,314 INFO L82 PathProgramCache]: Analyzing trace with hash -365776851, now seen corresponding path program 18 times [2020-10-16 12:17:38,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:38,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470959234] [2020-10-16 12:17:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 19 proven. 496 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-16 12:17:38,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470959234] [2020-10-16 12:17:38,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007431249] [2020-10-16 12:17:38,541 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:38,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-10-16 12:17:38,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:38,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:17:38,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-16 12:17:38,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:38,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 27 [2020-10-16 12:17:38,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400451395] [2020-10-16 12:17:38,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:17:38,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:38,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:17:38,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:17:38,858 INFO L87 Difference]: Start difference. First operand 940 states and 1254 transitions. Second operand 27 states. [2020-10-16 12:17:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:44,130 INFO L93 Difference]: Finished difference Result 1178 states and 1542 transitions. [2020-10-16 12:17:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2020-10-16 12:17:44,131 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-10-16 12:17:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:44,135 INFO L225 Difference]: With dead ends: 1178 [2020-10-16 12:17:44,135 INFO L226 Difference]: Without dead ends: 1178 [2020-10-16 12:17:44,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9308 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7695, Invalid=18711, Unknown=0, NotChecked=0, Total=26406 [2020-10-16 12:17:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-10-16 12:17:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1105. [2020-10-16 12:17:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-10-16 12:17:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1459 transitions. [2020-10-16 12:17:44,157 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1459 transitions. Word has length 93 [2020-10-16 12:17:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:44,158 INFO L481 AbstractCegarLoop]: Abstraction has 1105 states and 1459 transitions. [2020-10-16 12:17:44,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:17:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1459 transitions. [2020-10-16 12:17:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-16 12:17:44,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:44,161 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:44,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:44,375 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2077738871, now seen corresponding path program 19 times [2020-10-16 12:17:44,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:44,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282021395] [2020-10-16 12:17:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 22 proven. 561 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-16 12:17:44,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282021395] [2020-10-16 12:17:44,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550876108] [2020-10-16 12:17:44,639 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:44,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:17:44,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 22 proven. 561 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-16 12:17:44,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:44,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-16 12:17:44,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743153630] [2020-10-16 12:17:44,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:17:44,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:17:44,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:17:44,874 INFO L87 Difference]: Start difference. First operand 1105 states and 1459 transitions. Second operand 21 states. [2020-10-16 12:17:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:45,004 INFO L93 Difference]: Finished difference Result 1198 states and 1575 transitions. [2020-10-16 12:17:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:17:45,005 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-10-16 12:17:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:45,010 INFO L225 Difference]: With dead ends: 1198 [2020-10-16 12:17:45,010 INFO L226 Difference]: Without dead ends: 1198 [2020-10-16 12:17:45,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:17:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2020-10-16 12:17:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1165. [2020-10-16 12:17:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-10-16 12:17:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1536 transitions. [2020-10-16 12:17:45,039 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1536 transitions. Word has length 100 [2020-10-16 12:17:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:45,041 INFO L481 AbstractCegarLoop]: Abstraction has 1165 states and 1536 transitions. [2020-10-16 12:17:45,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:17:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1536 transitions. [2020-10-16 12:17:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-16 12:17:45,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:45,047 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:45,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:45,262 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash 110062427, now seen corresponding path program 20 times [2020-10-16 12:17:45,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:45,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119655927] [2020-10-16 12:17:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 22 proven. 630 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-16 12:17:45,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119655927] [2020-10-16 12:17:45,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176221180] [2020-10-16 12:17:45,690 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:45,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:17:45,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:45,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:17:45,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 22 proven. 630 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-16 12:17:45,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:45,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-16 12:17:45,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157142205] [2020-10-16 12:17:45,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:17:45,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:45,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:17:45,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:17:45,890 INFO L87 Difference]: Start difference. First operand 1165 states and 1536 transitions. Second operand 22 states. [2020-10-16 12:17:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:45,968 INFO L93 Difference]: Finished difference Result 1258 states and 1652 transitions. [2020-10-16 12:17:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:17:45,968 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 104 [2020-10-16 12:17:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:45,973 INFO L225 Difference]: With dead ends: 1258 [2020-10-16 12:17:45,973 INFO L226 Difference]: Without dead ends: 1258 [2020-10-16 12:17:45,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:17:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-16 12:17:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1225. [2020-10-16 12:17:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-10-16 12:17:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1613 transitions. [2020-10-16 12:17:45,994 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1613 transitions. Word has length 104 [2020-10-16 12:17:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:45,995 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 1613 transitions. [2020-10-16 12:17:45,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:17:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1613 transitions. [2020-10-16 12:17:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-16 12:17:45,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:45,998 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:46,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-16 12:17:46,213 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash -912464595, now seen corresponding path program 21 times [2020-10-16 12:17:46,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:46,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286294396] [2020-10-16 12:17:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 22 proven. 703 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-16 12:17:46,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286294396] [2020-10-16 12:17:46,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9860048] [2020-10-16 12:17:46,495 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:46,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-16 12:17:46,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:46,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:17:46,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-16 12:17:46,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:46,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 31 [2020-10-16 12:17:46,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841282951] [2020-10-16 12:17:46,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-16 12:17:46,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:46,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-16 12:17:46,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:17:46,828 INFO L87 Difference]: Start difference. First operand 1225 states and 1613 transitions. Second operand 31 states. [2020-10-16 12:17:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:55,333 INFO L93 Difference]: Finished difference Result 1460 states and 1896 transitions. [2020-10-16 12:17:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2020-10-16 12:17:55,333 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-10-16 12:17:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:55,338 INFO L225 Difference]: With dead ends: 1460 [2020-10-16 12:17:55,338 INFO L226 Difference]: Without dead ends: 1460 [2020-10-16 12:17:55,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16281 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=12705, Invalid=31605, Unknown=0, NotChecked=0, Total=44310 [2020-10-16 12:17:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-10-16 12:17:55,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1414. [2020-10-16 12:17:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1414 states. [2020-10-16 12:17:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1846 transitions. [2020-10-16 12:17:55,362 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1846 transitions. Word has length 108 [2020-10-16 12:17:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:55,362 INFO L481 AbstractCegarLoop]: Abstraction has 1414 states and 1846 transitions. [2020-10-16 12:17:55,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-16 12:17:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1846 transitions. [2020-10-16 12:17:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-16 12:17:55,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:55,366 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:55,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 12:17:55,580 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:55,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2018487717, now seen corresponding path program 22 times [2020-10-16 12:17:55,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:55,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072866672] [2020-10-16 12:17:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:55,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072866672] [2020-10-16 12:17:55,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455140856] [2020-10-16 12:17:55,735 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:56,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:17:56,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:56,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:17:56,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:56,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:56,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-16 12:17:56,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546949246] [2020-10-16 12:17:56,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:17:56,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:17:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:17:56,340 INFO L87 Difference]: Start difference. First operand 1414 states and 1846 transitions. Second operand 13 states. [2020-10-16 12:17:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:56,410 INFO L93 Difference]: Finished difference Result 1589 states and 2052 transitions. [2020-10-16 12:17:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:17:56,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 115 [2020-10-16 12:17:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:56,416 INFO L225 Difference]: With dead ends: 1589 [2020-10-16 12:17:56,416 INFO L226 Difference]: Without dead ends: 1589 [2020-10-16 12:17:56,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:17:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-10-16 12:17:56,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1543. [2020-10-16 12:17:56,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-10-16 12:17:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2002 transitions. [2020-10-16 12:17:56,437 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2002 transitions. Word has length 115 [2020-10-16 12:17:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:56,438 INFO L481 AbstractCegarLoop]: Abstraction has 1543 states and 2002 transitions. [2020-10-16 12:17:56,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:17:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2002 transitions. [2020-10-16 12:17:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-16 12:17:56,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:56,442 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:56,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:56,657 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:56,657 INFO L82 PathProgramCache]: Analyzing trace with hash -2042676161, now seen corresponding path program 23 times [2020-10-16 12:17:56,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:56,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886354766] [2020-10-16 12:17:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:56,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886354766] [2020-10-16 12:17:56,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086482014] [2020-10-16 12:17:56,814 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:57,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-16 12:17:57,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:57,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:17:57,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:57,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:57,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-16 12:17:57,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962816667] [2020-10-16 12:17:57,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:17:57,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:57,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:17:57,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:17:57,172 INFO L87 Difference]: Start difference. First operand 1543 states and 2002 transitions. Second operand 14 states. [2020-10-16 12:17:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:57,239 INFO L93 Difference]: Finished difference Result 1718 states and 2208 transitions. [2020-10-16 12:17:57,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:17:57,239 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2020-10-16 12:17:57,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:57,246 INFO L225 Difference]: With dead ends: 1718 [2020-10-16 12:17:57,246 INFO L226 Difference]: Without dead ends: 1718 [2020-10-16 12:17:57,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:17:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2020-10-16 12:17:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1672. [2020-10-16 12:17:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-10-16 12:17:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2158 transitions. [2020-10-16 12:17:57,272 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2158 transitions. Word has length 118 [2020-10-16 12:17:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:57,273 INFO L481 AbstractCegarLoop]: Abstraction has 1672 states and 2158 transitions. [2020-10-16 12:17:57,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:17:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2158 transitions. [2020-10-16 12:17:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-16 12:17:57,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:57,277 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:57,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 12:17:57,492 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1052962661, now seen corresponding path program 24 times [2020-10-16 12:17:57,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:57,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379644346] [2020-10-16 12:17:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:57,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379644346] [2020-10-16 12:17:57,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435768651] [2020-10-16 12:17:57,685 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:58,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-10-16 12:17:58,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:58,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:17:58,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:58,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:58,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-16 12:17:58,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704462372] [2020-10-16 12:17:58,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:17:58,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:17:58,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:17:58,479 INFO L87 Difference]: Start difference. First operand 1672 states and 2158 transitions. Second operand 15 states. [2020-10-16 12:17:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:58,618 INFO L93 Difference]: Finished difference Result 1847 states and 2364 transitions. [2020-10-16 12:17:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:17:58,619 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 121 [2020-10-16 12:17:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:58,626 INFO L225 Difference]: With dead ends: 1847 [2020-10-16 12:17:58,626 INFO L226 Difference]: Without dead ends: 1847 [2020-10-16 12:17:58,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:17:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2020-10-16 12:17:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1801. [2020-10-16 12:17:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1801 states. [2020-10-16 12:17:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2314 transitions. [2020-10-16 12:17:58,658 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2314 transitions. Word has length 121 [2020-10-16 12:17:58,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:58,658 INFO L481 AbstractCegarLoop]: Abstraction has 1801 states and 2314 transitions. [2020-10-16 12:17:58,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:17:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2314 transitions. [2020-10-16 12:17:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-16 12:17:58,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:58,663 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:58,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:58,878 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:58,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1691329151, now seen corresponding path program 25 times [2020-10-16 12:17:58,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:58,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783976436] [2020-10-16 12:17:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:59,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783976436] [2020-10-16 12:17:59,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496648065] [2020-10-16 12:17:59,059 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:59,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:17:59,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:59,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:59,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-16 12:17:59,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963337752] [2020-10-16 12:17:59,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:17:59,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:17:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:17:59,215 INFO L87 Difference]: Start difference. First operand 1801 states and 2314 transitions. Second operand 16 states. [2020-10-16 12:17:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:59,306 INFO L93 Difference]: Finished difference Result 1976 states and 2520 transitions. [2020-10-16 12:17:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:17:59,306 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 124 [2020-10-16 12:17:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:59,313 INFO L225 Difference]: With dead ends: 1976 [2020-10-16 12:17:59,313 INFO L226 Difference]: Without dead ends: 1976 [2020-10-16 12:17:59,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:17:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-16 12:17:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1930. [2020-10-16 12:17:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-16 12:17:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2470 transitions. [2020-10-16 12:17:59,340 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2470 transitions. Word has length 124 [2020-10-16 12:17:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:59,340 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2470 transitions. [2020-10-16 12:17:59,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:17:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2470 transitions. [2020-10-16 12:17:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-16 12:17:59,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:59,344 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:59,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 12:17:59,559 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1152246053, now seen corresponding path program 26 times [2020-10-16 12:17:59,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:59,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013568336] [2020-10-16 12:17:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:59,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013568336] [2020-10-16 12:17:59,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77679396] [2020-10-16 12:17:59,760 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:59,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:17:59,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:59,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:17:59,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:17:59,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:59,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-16 12:17:59,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277471931] [2020-10-16 12:17:59,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:17:59,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:59,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:17:59,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:17:59,932 INFO L87 Difference]: Start difference. First operand 1930 states and 2470 transitions. Second operand 17 states. [2020-10-16 12:18:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:18:00,004 INFO L93 Difference]: Finished difference Result 2105 states and 2676 transitions. [2020-10-16 12:18:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:18:00,005 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 127 [2020-10-16 12:18:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:18:00,011 INFO L225 Difference]: With dead ends: 2105 [2020-10-16 12:18:00,011 INFO L226 Difference]: Without dead ends: 2105 [2020-10-16 12:18:00,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:18:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2020-10-16 12:18:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2059. [2020-10-16 12:18:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-10-16 12:18:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2626 transitions. [2020-10-16 12:18:00,035 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2626 transitions. Word has length 127 [2020-10-16 12:18:00,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:18:00,035 INFO L481 AbstractCegarLoop]: Abstraction has 2059 states and 2626 transitions. [2020-10-16 12:18:00,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:18:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2626 transitions. [2020-10-16 12:18:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-16 12:18:00,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:18:00,039 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:18:00,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 12:18:00,254 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:18:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:18:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash 210393279, now seen corresponding path program 27 times [2020-10-16 12:18:00,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:18:00,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004393] [2020-10-16 12:18:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:18:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:00,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004393] [2020-10-16 12:18:00,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576388652] [2020-10-16 12:18:00,478 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 [2020-10-16 12:18:00,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-10-16 12:18:00,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:18:00,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:18:00,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:18:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:00,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:18:00,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-16 12:18:00,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710522144] [2020-10-16 12:18:00,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:18:00,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:18:00,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:18:00,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:18:00,910 INFO L87 Difference]: Start difference. First operand 2059 states and 2626 transitions. Second operand 18 states. [2020-10-16 12:18:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:18:00,974 INFO L93 Difference]: Finished difference Result 2234 states and 2832 transitions. [2020-10-16 12:18:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:18:00,974 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2020-10-16 12:18:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:18:00,983 INFO L225 Difference]: With dead ends: 2234 [2020-10-16 12:18:00,983 INFO L226 Difference]: Without dead ends: 2234 [2020-10-16 12:18:00,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:18:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-16 12:18:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2188. [2020-10-16 12:18:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2020-10-16 12:18:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2782 transitions. [2020-10-16 12:18:01,013 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2782 transitions. Word has length 130 [2020-10-16 12:18:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:18:01,014 INFO L481 AbstractCegarLoop]: Abstraction has 2188 states and 2782 transitions. [2020-10-16 12:18:01,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:18:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2782 transitions. [2020-10-16 12:18:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-16 12:18:01,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:18:01,019 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:18:01,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 12:18:01,234 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:18:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:18:01,234 INFO L82 PathProgramCache]: Analyzing trace with hash 495747813, now seen corresponding path program 28 times [2020-10-16 12:18:01,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:18:01,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389861859] [2020-10-16 12:18:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:18:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:01,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389861859] [2020-10-16 12:18:01,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95110313] [2020-10-16 12:18:01,573 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:02,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:18:02,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:18:02,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:18:02,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:18:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:02,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:18:02,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-16 12:18:02,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371484966] [2020-10-16 12:18:02,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:18:02,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:18:02,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:18:02,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:18:02,887 INFO L87 Difference]: Start difference. First operand 2188 states and 2782 transitions. Second operand 19 states. [2020-10-16 12:18:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:18:02,970 INFO L93 Difference]: Finished difference Result 2363 states and 2988 transitions. [2020-10-16 12:18:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:18:02,970 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 133 [2020-10-16 12:18:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:18:02,978 INFO L225 Difference]: With dead ends: 2363 [2020-10-16 12:18:02,978 INFO L226 Difference]: Without dead ends: 2363 [2020-10-16 12:18:02,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:18:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-10-16 12:18:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2317. [2020-10-16 12:18:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-10-16 12:18:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2938 transitions. [2020-10-16 12:18:03,033 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2938 transitions. Word has length 133 [2020-10-16 12:18:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:18:03,034 INFO L481 AbstractCegarLoop]: Abstraction has 2317 states and 2938 transitions. [2020-10-16 12:18:03,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:18:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2938 transitions. [2020-10-16 12:18:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-16 12:18:03,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:18:03,038 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:18:03,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:03,253 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:18:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:18:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1752391423, now seen corresponding path program 29 times [2020-10-16 12:18:03,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:18:03,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363761920] [2020-10-16 12:18:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:18:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:03,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363761920] [2020-10-16 12:18:03,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141783525] [2020-10-16 12:18:03,491 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:03,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-16 12:18:03,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:18:03,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:18:03,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:18:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:03,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:18:03,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-16 12:18:03,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721073731] [2020-10-16 12:18:03,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:18:03,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:18:03,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:18:03,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:18:03,786 INFO L87 Difference]: Start difference. First operand 2317 states and 2938 transitions. Second operand 20 states. [2020-10-16 12:18:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:18:03,889 INFO L93 Difference]: Finished difference Result 2492 states and 3144 transitions. [2020-10-16 12:18:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:18:03,889 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2020-10-16 12:18:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:18:03,899 INFO L225 Difference]: With dead ends: 2492 [2020-10-16 12:18:03,899 INFO L226 Difference]: Without dead ends: 2492 [2020-10-16 12:18:03,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:18:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2020-10-16 12:18:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2446. [2020-10-16 12:18:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2020-10-16 12:18:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3094 transitions. [2020-10-16 12:18:03,927 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3094 transitions. Word has length 136 [2020-10-16 12:18:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:18:03,927 INFO L481 AbstractCegarLoop]: Abstraction has 2446 states and 3094 transitions. [2020-10-16 12:18:03,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:18:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3094 transitions. [2020-10-16 12:18:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-16 12:18:03,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:18:03,932 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:18:04,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-16 12:18:04,146 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:18:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:18:04,147 INFO L82 PathProgramCache]: Analyzing trace with hash -807742299, now seen corresponding path program 30 times [2020-10-16 12:18:04,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:18:04,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604598198] [2020-10-16 12:18:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:18:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:04,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604598198] [2020-10-16 12:18:04,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908313503] [2020-10-16 12:18:04,497 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:05,131 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2020-10-16 12:18:05,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:18:05,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:18:05,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:18:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:05,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:18:05,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-16 12:18:05,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536796839] [2020-10-16 12:18:05,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:18:05,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:18:05,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:18:05,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:18:05,183 INFO L87 Difference]: Start difference. First operand 2446 states and 3094 transitions. Second operand 21 states. [2020-10-16 12:18:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:18:05,263 INFO L93 Difference]: Finished difference Result 2621 states and 3300 transitions. [2020-10-16 12:18:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:18:05,264 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2020-10-16 12:18:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:18:05,275 INFO L225 Difference]: With dead ends: 2621 [2020-10-16 12:18:05,275 INFO L226 Difference]: Without dead ends: 2621 [2020-10-16 12:18:05,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:18:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2020-10-16 12:18:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2575. [2020-10-16 12:18:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-16 12:18:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3250 transitions. [2020-10-16 12:18:05,304 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3250 transitions. Word has length 139 [2020-10-16 12:18:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:18:05,305 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3250 transitions. [2020-10-16 12:18:05,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:18:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3250 transitions. [2020-10-16 12:18:05,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-16 12:18:05,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:18:05,309 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:18:05,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:05,526 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:18:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:18:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash 277787967, now seen corresponding path program 31 times [2020-10-16 12:18:05,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:18:05,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403387956] [2020-10-16 12:18:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:18:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:05,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403387956] [2020-10-16 12:18:05,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16879598] [2020-10-16 12:18:05,844 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:05,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:18:05,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:18:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:06,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:18:06,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-16 12:18:06,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520490571] [2020-10-16 12:18:06,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:18:06,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:18:06,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:18:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:18:06,017 INFO L87 Difference]: Start difference. First operand 2575 states and 3250 transitions. Second operand 22 states. [2020-10-16 12:18:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:18:06,141 INFO L93 Difference]: Finished difference Result 2750 states and 3456 transitions. [2020-10-16 12:18:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:18:06,142 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-16 12:18:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:18:06,149 INFO L225 Difference]: With dead ends: 2750 [2020-10-16 12:18:06,149 INFO L226 Difference]: Without dead ends: 2750 [2020-10-16 12:18:06,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:18:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2020-10-16 12:18:06,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2704. [2020-10-16 12:18:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-10-16 12:18:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3406 transitions. [2020-10-16 12:18:06,192 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3406 transitions. Word has length 142 [2020-10-16 12:18:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:18:06,193 INFO L481 AbstractCegarLoop]: Abstraction has 2704 states and 3406 transitions. [2020-10-16 12:18:06,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:18:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3406 transitions. [2020-10-16 12:18:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-16 12:18:06,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:18:06,200 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:18:06,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-16 12:18:06,414 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:18:06,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:18:06,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1793796507, now seen corresponding path program 32 times [2020-10-16 12:18:06,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:18:06,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107710767] [2020-10-16 12:18:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:18:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:06,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107710767] [2020-10-16 12:18:06,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917499403] [2020-10-16 12:18:06,735 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:06,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:18:06,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:18:06,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:18:06,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:18:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-16 12:18:06,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:18:06,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-16 12:18:06,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195289027] [2020-10-16 12:18:06,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:18:06,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:18:06,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:18:06,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:18:06,903 INFO L87 Difference]: Start difference. First operand 2704 states and 3406 transitions. Second operand 23 states. [2020-10-16 12:18:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:18:07,020 INFO L93 Difference]: Finished difference Result 2833 states and 3562 transitions. [2020-10-16 12:18:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 12:18:07,020 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 145 [2020-10-16 12:18:07,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:18:07,025 INFO L225 Difference]: With dead ends: 2833 [2020-10-16 12:18:07,025 INFO L226 Difference]: Without dead ends: 2833 [2020-10-16 12:18:07,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:18:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-10-16 12:18:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2833. [2020-10-16 12:18:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-10-16 12:18:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3562 transitions. [2020-10-16 12:18:07,052 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3562 transitions. Word has length 145 [2020-10-16 12:18:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:18:07,053 INFO L481 AbstractCegarLoop]: Abstraction has 2833 states and 3562 transitions. [2020-10-16 12:18:07,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:18:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3562 transitions. [2020-10-16 12:18:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-16 12:18:07,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:18:07,057 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:18:07,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 12:18:07,258 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:18:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:18:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1981785217, now seen corresponding path program 33 times [2020-10-16 12:18:07,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:18:07,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390593470] [2020-10-16 12:18:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:18:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:18:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:18:10,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390593470] [2020-10-16 12:18:10,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708452215] [2020-10-16 12:18:10,224 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:18:10,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2020-10-16 12:18:10,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:18:10,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-16 12:18:10,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:18:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:18:11,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:18:11,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-16 12:18:11,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164523752] [2020-10-16 12:18:11,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-16 12:18:11,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:18:11,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-16 12:18:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 12:18:11,030 INFO L87 Difference]: Start difference. First operand 2833 states and 3562 transitions. Second operand 63 states. [2020-10-16 12:19:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:28,035 INFO L93 Difference]: Finished difference Result 32926 states and 45933 transitions. [2020-10-16 12:19:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 633 states. [2020-10-16 12:19:28,035 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-10-16 12:19:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:28,101 INFO L225 Difference]: With dead ends: 32926 [2020-10-16 12:19:28,101 INFO L226 Difference]: Without dead ends: 32924 [2020-10-16 12:19:28,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 632 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162735 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=2407, Invalid=398915, Unknown=0, NotChecked=0, Total=401322 [2020-10-16 12:19:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32924 states. [2020-10-16 12:19:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32924 to 2967. [2020-10-16 12:19:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2967 states. [2020-10-16 12:19:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3794 transitions. [2020-10-16 12:19:28,300 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3794 transitions. Word has length 148 [2020-10-16 12:19:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:28,301 INFO L481 AbstractCegarLoop]: Abstraction has 2967 states and 3794 transitions. [2020-10-16 12:19:28,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-16 12:19:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3794 transitions. [2020-10-16 12:19:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-16 12:19:28,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:28,306 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:28,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-16 12:19:28,521 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:28,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:28,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1970430061, now seen corresponding path program 34 times [2020-10-16 12:19:28,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:28,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009315461] [2020-10-16 12:19:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:31,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009315461] [2020-10-16 12:19:31,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011736721] [2020-10-16 12:19:31,625 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:19:33,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:19:33,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:19:33,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-16 12:19:33,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:33,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:33,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-16 12:19:33,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804277771] [2020-10-16 12:19:33,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-16 12:19:33,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:33,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-16 12:19:33,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 12:19:33,579 INFO L87 Difference]: Start difference. First operand 2967 states and 3794 transitions. Second operand 63 states. [2020-10-16 12:20:43,852 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-16 12:20:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:48,860 INFO L93 Difference]: Finished difference Result 30945 states and 43173 transitions. [2020-10-16 12:20:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2020-10-16 12:20:48,860 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-10-16 12:20:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:48,903 INFO L225 Difference]: With dead ends: 30945 [2020-10-16 12:20:48,904 INFO L226 Difference]: Without dead ends: 30943 [2020-10-16 12:20:48,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 612 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151525 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=2327, Invalid=374055, Unknown=0, NotChecked=0, Total=376382 [2020-10-16 12:20:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30943 states. [2020-10-16 12:20:49,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30943 to 2973. [2020-10-16 12:20:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2020-10-16 12:20:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 3801 transitions. [2020-10-16 12:20:49,076 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 3801 transitions. Word has length 148 [2020-10-16 12:20:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:49,076 INFO L481 AbstractCegarLoop]: Abstraction has 2973 states and 3801 transitions. [2020-10-16 12:20:49,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-16 12:20:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 3801 transitions. [2020-10-16 12:20:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-16 12:20:49,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:49,081 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:49,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 12:20:49,295 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:20:49,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:49,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1092472257, now seen corresponding path program 35 times [2020-10-16 12:20:49,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:49,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875961929] [2020-10-16 12:20:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:50,453 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-10-16 12:20:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:20:53,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875961929] [2020-10-16 12:20:53,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608419040] [2020-10-16 12:20:53,095 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:20:53,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-16 12:20:53,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:20:53,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-16 12:20:53,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:20:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:20:53,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:20:53,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-16 12:20:53,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343743163] [2020-10-16 12:20:53,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-16 12:20:53,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-16 12:20:53,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 12:20:53,501 INFO L87 Difference]: Start difference. First operand 2973 states and 3801 transitions. Second operand 63 states. Received shutdown request... [2020-10-16 12:21:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2020-10-16 12:21:17,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 12:21:17,920 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:21:17,924 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:21:17,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:21:17 BasicIcfg [2020-10-16 12:21:17,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:21:17,926 INFO L168 Benchmark]: Toolchain (without parser) took 240773.11 ms. Allocated memory was 141.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 102.2 MB in the beginning and 236.4 MB in the end (delta: -134.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-16 12:21:17,926 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:21:17,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 998.67 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 109.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:17,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.30 ms. Allocated memory is still 205.0 MB. Free memory was 109.2 MB in the beginning and 107.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:17,927 INFO L168 Benchmark]: Boogie Preprocessor took 75.25 ms. Allocated memory is still 205.0 MB. Free memory was 107.2 MB in the beginning and 105.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:17,927 INFO L168 Benchmark]: RCFGBuilder took 829.70 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 105.2 MB in the beginning and 190.9 MB in the end (delta: -85.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:17,928 INFO L168 Benchmark]: TraceAbstraction took 238757.01 ms. Allocated memory was 234.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 190.9 MB in the beginning and 236.4 MB in the end (delta: -45.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-16 12:21:17,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 998.67 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 109.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 106.30 ms. Allocated memory is still 205.0 MB. Free memory was 109.2 MB in the beginning and 107.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.25 ms. Allocated memory is still 205.0 MB. Free memory was 107.2 MB in the beginning and 105.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 829.70 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 105.2 MB in the beginning and 190.9 MB in the end (delta: -85.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238757.01 ms. Allocated memory was 234.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 190.9 MB in the beginning and 236.4 MB in the end (delta: -45.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 325 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 20 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 78 PlacesBefore, 19 PlacesAfterwards, 81 TransitionsBefore, 17 TransitionsAfterwards, 646 CoEnabledTransitionPairs, 5 FixpointIterations, 38 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 75 TotalNumberOfCompositions, 823 MoverChecksTotal - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (2973states) and FLOYD_HOARE automaton (currently 208 states, 63 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 248 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 238.6s, OverallIterations: 37, TraceHistogramMax: 20, AutomataDifference: 198.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 5788 SDtfs, 14074 SDslu, 305082 SDs, 0 SdLazy, 178072 SolverSat, 3060 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6116 GetRequests, 3628 SyntacticMatches, 6 SemanticMatches, 2481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365452 ImplicationChecksByTransitivity, 96.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2973occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 36 MinimizatonAttempts, 59079 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 8.5s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 6265 NumberOfCodeBlocks, 6034 NumberOfCodeBlocksAsserted, 315 NumberOfCheckSat, 6193 ConstructedInterpolants, 0 QuantifiedInterpolants, 2419741 SizeOfPredicates, 153 NumberOfNonLiveVariables, 11795 ConjunctsInSsa, 863 ConjunctsInUnsatCore, 72 InterpolantComputations, 3 PerfectInterpolantSequences, 20421/43245 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown