/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:27:55,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:27:55,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:27:55,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:27:55,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:27:55,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:27:55,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:27:55,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:27:55,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:27:55,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:27:55,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:27:55,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:27:55,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:27:55,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:27:55,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:27:55,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:27:55,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:27:55,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:27:55,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:27:55,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:27:55,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:27:55,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:27:55,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:27:55,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:27:55,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:27:55,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:27:55,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:27:55,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:27:55,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:27:55,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:27:55,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:27:55,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:27:55,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:27:55,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:27:55,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:27:55,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:27:55,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:27:55,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:27:55,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:27:55,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:27:55,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:27:55,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:27:55,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:27:55,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:27:55,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:27:55,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:27:55,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:27:55,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:27:55,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:27:55,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:27:55,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:27:55,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:27:55,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:27:55,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:27:55,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:27:55,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:27:55,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:27:55,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:27:55,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:27:55,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:27:55,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:27:55,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:27:55,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:27:55,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:27:55,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:27:55,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:27:55,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:27:55,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:27:55,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:27:55,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:27:55,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:27:55,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:27:55,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:27:55,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:27:55,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:27:55,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:27:55,565 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:27:55,566 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-16 11:27:55,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/994733fb0/8f7e9b68bb9440c6a1a549eeecc4cddc/FLAG2f04d55e0 [2020-10-16 11:27:56,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:27:56,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-16 11:27:56,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/994733fb0/8f7e9b68bb9440c6a1a549eeecc4cddc/FLAG2f04d55e0 [2020-10-16 11:27:56,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/994733fb0/8f7e9b68bb9440c6a1a549eeecc4cddc [2020-10-16 11:27:56,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:27:56,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:27:56,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:27:56,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:27:56,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:27:56,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:27:56" (1/1) ... [2020-10-16 11:27:56,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34491526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:56, skipping insertion in model container [2020-10-16 11:27:56,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:27:56" (1/1) ... [2020-10-16 11:27:56,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:27:56,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:27:57,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:27:57,377 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:27:57,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:27:57,685 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:27:57,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57 WrapperNode [2020-10-16 11:27:57,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:27:57,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:27:57,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:27:57,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:27:57,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:27:57,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:27:57,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:27:57,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:27:57,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (1/1) ... [2020-10-16 11:27:57,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:27:57,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:27:57,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:27:57,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:27:57,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (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 11:27:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:27:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:27:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 11:27:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:27:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 11:27:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2020-10-16 11:27:57,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2020-10-16 11:27:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 11:27:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:27:57,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:27:57,858 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 11:27:58,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:27:58,268 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:27:58,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:27:58 BoogieIcfgContainer [2020-10-16 11:27:58,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:27:58,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:27:58,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:27:58,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:27:58,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:27:56" (1/3) ... [2020-10-16 11:27:58,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5381f559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:27:58, skipping insertion in model container [2020-10-16 11:27:58,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:57" (2/3) ... [2020-10-16 11:27:58,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5381f559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:27:58, skipping insertion in model container [2020-10-16 11:27:58,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:27:58" (3/3) ... [2020-10-16 11:27:58,280 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2020-10-16 11:27:58,292 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:27:58,292 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:27:58,299 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:27:58,300 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:27:58,328 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,328 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,329 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,329 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,329 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,330 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,330 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,330 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,331 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,331 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,331 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,331 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,332 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,332 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,332 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,332 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,333 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,333 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,333 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,333 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,334 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,334 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,334 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,338 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,338 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,338 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,339 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,339 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,339 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,339 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,340 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,340 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:27:58,363 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-16 11:27:58,378 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 11:27:58,397 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:27:58,397 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:27:58,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:27:58,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:27:58,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:27:58,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:27:58,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:27:58,398 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:27:58,412 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:27:58,415 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 81 transitions, 170 flow [2020-10-16 11:27:58,418 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 81 transitions, 170 flow [2020-10-16 11:27:58,420 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 170 flow [2020-10-16 11:27:58,469 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-10-16 11:27:58,469 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 11:27:58,474 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 11:27:58,477 INFO L117 LiptonReduction]: Number of co-enabled transitions 646 [2020-10-16 11:28:00,495 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-16 11:28:00,659 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-16 11:28:01,261 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-16 11:28:01,544 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-16 11:28:01,553 INFO L132 LiptonReduction]: Checked pairs total: 823 [2020-10-16 11:28:01,554 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-16 11:28:01,561 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 17 transitions, 42 flow [2020-10-16 11:28:01,571 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 35 states. [2020-10-16 11:28:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-16 11:28:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:28:01,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:01,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:01,582 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:01,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1717538151, now seen corresponding path program 1 times [2020-10-16 11:28:01,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:01,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367159696] [2020-10-16 11:28:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:01,859 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 11:28:01,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367159696] [2020-10-16 11:28:01,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:28:01,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:28:01,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811060702] [2020-10-16 11:28:01,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:28:01,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:01,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:28:01,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:28:01,888 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-16 11:28:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:01,942 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2020-10-16 11:28:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:28:01,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:28:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:01,956 INFO L225 Difference]: With dead ends: 52 [2020-10-16 11:28:01,956 INFO L226 Difference]: Without dead ends: 52 [2020-10-16 11:28:01,958 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 11:28:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-16 11:28:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-16 11:28:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 11:28:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2020-10-16 11:28:01,999 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 8 [2020-10-16 11:28:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:02,000 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2020-10-16 11:28:02,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:28:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2020-10-16 11:28:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:28:02,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:02,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:02,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:28:02,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:02,002 INFO L82 PathProgramCache]: Analyzing trace with hash 62706239, now seen corresponding path program 1 times [2020-10-16 11:28:02,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:02,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817492862] [2020-10-16 11:28:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:02,058 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 11:28:02,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817492862] [2020-10-16 11:28:02,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:28:02,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:28:02,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342672085] [2020-10-16 11:28:02,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:28:02,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:02,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:28:02,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:28:02,062 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 3 states. [2020-10-16 11:28:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:02,090 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2020-10-16 11:28:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:28:02,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 11:28:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:02,092 INFO L225 Difference]: With dead ends: 64 [2020-10-16 11:28:02,093 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 11:28:02,094 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 11:28:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 11:28:02,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2020-10-16 11:28:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-16 11:28:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2020-10-16 11:28:02,101 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 11 [2020-10-16 11:28:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:02,102 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2020-10-16 11:28:02,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:28:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2020-10-16 11:28:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:28:02,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:02,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:02,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:28:02,104 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:02,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1954756591, now seen corresponding path program 1 times [2020-10-16 11:28:02,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:02,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561159472] [2020-10-16 11:28:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:02,162 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 11:28:02,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561159472] [2020-10-16 11:28:02,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113357799] [2020-10-16 11:28:02,164 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 11:28:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:02,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-16 11:28:02,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:02,302 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 11:28:02,303 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 11:28:02,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 11:28:02,311 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 11:28:02,311 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-16 11:28:02,351 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 11:28:02,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 11:28:02,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-16 11:28:02,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903524113] [2020-10-16 11:28:02,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:28:02,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:02,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:28:02,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:28:02,354 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand 3 states. [2020-10-16 11:28:02,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:02,383 INFO L93 Difference]: Finished difference Result 40 states and 66 transitions. [2020-10-16 11:28:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:28:02,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-16 11:28:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:02,385 INFO L225 Difference]: With dead ends: 40 [2020-10-16 11:28:02,385 INFO L226 Difference]: Without dead ends: 40 [2020-10-16 11:28:02,385 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 11:28:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-16 11:28:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-16 11:28:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 11:28:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-16 11:28:02,390 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 15 [2020-10-16 11:28:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:02,391 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-16 11:28:02,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:28:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-16 11:28:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:28:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:02,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:02,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 11:28:02,604 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:02,605 INFO L82 PathProgramCache]: Analyzing trace with hash 525517821, now seen corresponding path program 2 times [2020-10-16 11:28:02,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:02,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467571532] [2020-10-16 11:28:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:02,693 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 11:28:02,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467571532] [2020-10-16 11:28:02,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416677226] [2020-10-16 11:28:02,694 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 11:28:02,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:28:02,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:02,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-16 11:28:02,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:02,832 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 11:28:02,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:02,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 11:28:02,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056313343] [2020-10-16 11:28:02,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:28:02,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:02,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:28:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:28:02,835 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 6 states. [2020-10-16 11:28:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:02,981 INFO L93 Difference]: Finished difference Result 104 states and 159 transitions. [2020-10-16 11:28:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 11:28:02,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:28:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:02,986 INFO L225 Difference]: With dead ends: 104 [2020-10-16 11:28:02,986 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 11:28:02,986 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 11:28:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 11:28:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2020-10-16 11:28:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 11:28:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 124 transitions. [2020-10-16 11:28:03,007 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 124 transitions. Word has length 15 [2020-10-16 11:28:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:03,008 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 124 transitions. [2020-10-16 11:28:03,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:28:03,008 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 124 transitions. [2020-10-16 11:28:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 11:28:03,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:03,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:03,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:03,227 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:03,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:03,228 INFO L82 PathProgramCache]: Analyzing trace with hash 485096059, now seen corresponding path program 3 times [2020-10-16 11:28:03,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:03,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277753050] [2020-10-16 11:28:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:03,297 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 11:28:03,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277753050] [2020-10-16 11:28:03,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598952206] [2020-10-16 11:28:03,298 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 11:28:03,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 11:28:03,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:03,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 11:28:03,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:03,395 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 11:28:03,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:03,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-16 11:28:03,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861804747] [2020-10-16 11:28:03,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:28:03,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:03,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:28:03,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:28:03,398 INFO L87 Difference]: Start difference. First operand 79 states and 124 transitions. Second operand 6 states. [2020-10-16 11:28:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:03,433 INFO L93 Difference]: Finished difference Result 110 states and 168 transitions. [2020-10-16 11:28:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:28:03,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-16 11:28:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:03,435 INFO L225 Difference]: With dead ends: 110 [2020-10-16 11:28:03,435 INFO L226 Difference]: Without dead ends: 110 [2020-10-16 11:28:03,436 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 11:28:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-16 11:28:03,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2020-10-16 11:28:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-16 11:28:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 154 transitions. [2020-10-16 11:28:03,446 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 154 transitions. Word has length 22 [2020-10-16 11:28:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:03,447 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 154 transitions. [2020-10-16 11:28:03,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:28:03,447 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 154 transitions. [2020-10-16 11:28:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:28:03,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:03,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:03,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:03,665 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:03,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2041399383, now seen corresponding path program 4 times [2020-10-16 11:28:03,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:03,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73915201] [2020-10-16 11:28:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:03,739 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 11:28:03,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73915201] [2020-10-16 11:28:03,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633144638] [2020-10-16 11:28:03,740 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 11:28:03,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:28:03,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:03,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 11:28:03,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:03,835 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 11:28:03,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:03,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-16 11:28:03,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253405070] [2020-10-16 11:28:03,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:28:03,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:03,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:28:03,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:28:03,838 INFO L87 Difference]: Start difference. First operand 100 states and 154 transitions. Second operand 6 states. [2020-10-16 11:28:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:03,863 INFO L93 Difference]: Finished difference Result 148 states and 220 transitions. [2020-10-16 11:28:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:28:03,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-16 11:28:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:03,865 INFO L225 Difference]: With dead ends: 148 [2020-10-16 11:28:03,865 INFO L226 Difference]: Without dead ends: 148 [2020-10-16 11:28:03,866 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 11:28:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-16 11:28:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2020-10-16 11:28:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 11:28:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 196 transitions. [2020-10-16 11:28:03,878 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 196 transitions. Word has length 25 [2020-10-16 11:28:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:03,879 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 196 transitions. [2020-10-16 11:28:03,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:28:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 196 transitions. [2020-10-16 11:28:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 11:28:03,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:03,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:04,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:04,097 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:04,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:04,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1548321815, now seen corresponding path program 5 times [2020-10-16 11:28:04,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:04,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896444878] [2020-10-16 11:28:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:04,216 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 11:28:04,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896444878] [2020-10-16 11:28:04,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693571396] [2020-10-16 11:28:04,219 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 11:28:04,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 11:28:04,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:04,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-16 11:28:04,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:04,316 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 11:28:04,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:04,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-16 11:28:04,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240891230] [2020-10-16 11:28:04,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:28:04,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:04,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:28:04,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:28:04,319 INFO L87 Difference]: Start difference. First operand 130 states and 196 transitions. Second operand 7 states. [2020-10-16 11:28:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:04,358 INFO L93 Difference]: Finished difference Result 178 states and 262 transitions. [2020-10-16 11:28:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:28:04,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-16 11:28:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:04,360 INFO L225 Difference]: With dead ends: 178 [2020-10-16 11:28:04,360 INFO L226 Difference]: Without dead ends: 178 [2020-10-16 11:28:04,361 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 11:28:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-16 11:28:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 160. [2020-10-16 11:28:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 11:28:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 238 transitions. [2020-10-16 11:28:04,372 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 238 transitions. Word has length 29 [2020-10-16 11:28:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:04,372 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 238 transitions. [2020-10-16 11:28:04,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:28:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 238 transitions. [2020-10-16 11:28:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 11:28:04,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:04,375 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:04,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-16 11:28:04,589 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2012714619, now seen corresponding path program 6 times [2020-10-16 11:28:04,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:04,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59384731] [2020-10-16 11:28:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:04,716 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 11:28:04,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59384731] [2020-10-16 11:28:04,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366997605] [2020-10-16 11:28:04,717 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 11:28:04,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-16 11:28:04,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:04,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-16 11:28:04,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:04,886 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 11:28:04,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:04,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-10-16 11:28:04,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203297807] [2020-10-16 11:28:04,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:28:04,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:04,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:28:04,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:28:04,889 INFO L87 Difference]: Start difference. First operand 160 states and 238 transitions. Second operand 11 states. [2020-10-16 11:28:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:05,334 INFO L93 Difference]: Finished difference Result 266 states and 378 transitions. [2020-10-16 11:28:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 11:28:05,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-16 11:28:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:05,337 INFO L225 Difference]: With dead ends: 266 [2020-10-16 11:28:05,338 INFO L226 Difference]: Without dead ends: 266 [2020-10-16 11:28:05,339 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 11:28:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-16 11:28:05,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 229. [2020-10-16 11:28:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-16 11:28:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 331 transitions. [2020-10-16 11:28:05,369 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 331 transitions. Word has length 33 [2020-10-16 11:28:05,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:05,370 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 331 transitions. [2020-10-16 11:28:05,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:28:05,370 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 331 transitions. [2020-10-16 11:28:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-16 11:28:05,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:05,375 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:05,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:05,577 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash -480954575, now seen corresponding path program 7 times [2020-10-16 11:28:05,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:05,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107333441] [2020-10-16 11:28:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:05,702 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 11:28:05,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107333441] [2020-10-16 11:28:05,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534781245] [2020-10-16 11:28:05,704 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 11:28:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:05,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:28:05,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:05,797 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 11:28:05,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:05,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-16 11:28:05,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202154996] [2020-10-16 11:28:05,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:28:05,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:05,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:28:05,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:28:05,799 INFO L87 Difference]: Start difference. First operand 229 states and 331 transitions. Second operand 9 states. [2020-10-16 11:28:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:05,829 INFO L93 Difference]: Finished difference Result 286 states and 407 transitions. [2020-10-16 11:28:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 11:28:05,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-16 11:28:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:05,832 INFO L225 Difference]: With dead ends: 286 [2020-10-16 11:28:05,832 INFO L226 Difference]: Without dead ends: 286 [2020-10-16 11:28:05,832 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 11:28:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-16 11:28:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 265. [2020-10-16 11:28:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-16 11:28:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 380 transitions. [2020-10-16 11:28:05,841 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 380 transitions. Word has length 40 [2020-10-16 11:28:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:05,841 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 380 transitions. [2020-10-16 11:28:05,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:28:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 380 transitions. [2020-10-16 11:28:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-16 11:28:05,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:05,844 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:06,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:06,059 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:06,060 INFO L82 PathProgramCache]: Analyzing trace with hash -870694653, now seen corresponding path program 8 times [2020-10-16 11:28:06,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:06,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405032684] [2020-10-16 11:28:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:06,153 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 11:28:06,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405032684] [2020-10-16 11:28:06,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517765628] [2020-10-16 11:28:06,154 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 11:28:06,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:28:06,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:06,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:28:06,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:06,313 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 11:28:06,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:06,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-16 11:28:06,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125913455] [2020-10-16 11:28:06,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 11:28:06,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:06,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 11:28:06,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-16 11:28:06,315 INFO L87 Difference]: Start difference. First operand 265 states and 380 transitions. Second operand 10 states. [2020-10-16 11:28:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:06,360 INFO L93 Difference]: Finished difference Result 322 states and 456 transitions. [2020-10-16 11:28:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 11:28:06,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-16 11:28:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:06,363 INFO L225 Difference]: With dead ends: 322 [2020-10-16 11:28:06,363 INFO L226 Difference]: Without dead ends: 322 [2020-10-16 11:28:06,363 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 11:28:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-16 11:28:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 301. [2020-10-16 11:28:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-16 11:28:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2020-10-16 11:28:06,375 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 44 [2020-10-16 11:28:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:06,382 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2020-10-16 11:28:06,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 11:28:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2020-10-16 11:28:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-16 11:28:06,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:06,387 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:06,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 11:28:06,603 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:06,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1422004693, now seen corresponding path program 9 times [2020-10-16 11:28:06,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:06,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253073153] [2020-10-16 11:28:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:06,702 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 11:28:06,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253073153] [2020-10-16 11:28:06,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548098125] [2020-10-16 11:28:06,703 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 11:28:06,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-16 11:28:06,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:06,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:28:06,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:06,846 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 11:28:06,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:06,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-10-16 11:28:06,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160390358] [2020-10-16 11:28:06,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 11:28:06,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:06,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 11:28:06,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:28:06,849 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand 15 states. [2020-10-16 11:28:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:07,878 INFO L93 Difference]: Finished difference Result 440 states and 606 transitions. [2020-10-16 11:28:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-16 11:28:07,881 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-16 11:28:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:07,885 INFO L225 Difference]: With dead ends: 440 [2020-10-16 11:28:07,885 INFO L226 Difference]: Without dead ends: 440 [2020-10-16 11:28:07,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=945, Invalid=2025, Unknown=0, NotChecked=0, Total=2970 [2020-10-16 11:28:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-16 11:28:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 394. [2020-10-16 11:28:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-16 11:28:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 550 transitions. [2020-10-16 11:28:07,897 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 550 transitions. Word has length 48 [2020-10-16 11:28:07,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:07,898 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 550 transitions. [2020-10-16 11:28:07,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 11:28:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 550 transitions. [2020-10-16 11:28:07,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-16 11:28:07,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:07,900 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:08,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:08,114 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:08,115 INFO L82 PathProgramCache]: Analyzing trace with hash 314386685, now seen corresponding path program 10 times [2020-10-16 11:28:08,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:08,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195861111] [2020-10-16 11:28:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:08,215 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 11:28:08,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195861111] [2020-10-16 11:28:08,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077877348] [2020-10-16 11:28:08,216 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 11:28:08,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:28:08,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:08,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:28:08,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:08,368 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 11:28:08,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:08,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-16 11:28:08,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070348777] [2020-10-16 11:28:08,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:28:08,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:08,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:28:08,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:28:08,370 INFO L87 Difference]: Start difference. First operand 394 states and 550 transitions. Second operand 12 states. [2020-10-16 11:28:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:08,410 INFO L93 Difference]: Finished difference Result 460 states and 636 transitions. [2020-10-16 11:28:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 11:28:08,411 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-16 11:28:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:08,413 INFO L225 Difference]: With dead ends: 460 [2020-10-16 11:28:08,413 INFO L226 Difference]: Without dead ends: 460 [2020-10-16 11:28:08,414 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 11:28:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-16 11:28:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 436. [2020-10-16 11:28:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-16 11:28:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 606 transitions. [2020-10-16 11:28:08,424 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 606 transitions. Word has length 55 [2020-10-16 11:28:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:08,424 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 606 transitions. [2020-10-16 11:28:08,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:28:08,425 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 606 transitions. [2020-10-16 11:28:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-16 11:28:08,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:08,426 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:08,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:08,642 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash 298647787, now seen corresponding path program 11 times [2020-10-16 11:28:08,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:08,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432158160] [2020-10-16 11:28:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:08,762 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 11:28:08,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432158160] [2020-10-16 11:28:08,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738483253] [2020-10-16 11:28:08,763 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 11:28:08,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-16 11:28:08,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:08,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 11:28:08,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:08,934 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 11:28:08,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:08,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-16 11:28:08,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404482495] [2020-10-16 11:28:08,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 11:28:08,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:08,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 11:28:08,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-16 11:28:08,942 INFO L87 Difference]: Start difference. First operand 436 states and 606 transitions. Second operand 13 states. [2020-10-16 11:28:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:08,992 INFO L93 Difference]: Finished difference Result 502 states and 692 transitions. [2020-10-16 11:28:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 11:28:08,993 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-16 11:28:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:08,995 INFO L225 Difference]: With dead ends: 502 [2020-10-16 11:28:08,995 INFO L226 Difference]: Without dead ends: 502 [2020-10-16 11:28:08,995 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 11:28:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-16 11:28:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-10-16 11:28:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-16 11:28:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 662 transitions. [2020-10-16 11:28:09,008 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 662 transitions. Word has length 59 [2020-10-16 11:28:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:09,009 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 662 transitions. [2020-10-16 11:28:09,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 11:28:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 662 transitions. [2020-10-16 11:28:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-16 11:28:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:09,011 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:09,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 11:28:09,226 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:09,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:09,226 INFO L82 PathProgramCache]: Analyzing trace with hash -734842407, now seen corresponding path program 12 times [2020-10-16 11:28:09,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:09,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308884258] [2020-10-16 11:28:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:09,412 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 11:28:09,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308884258] [2020-10-16 11:28:09,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521405061] [2020-10-16 11:28:09,415 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 11:28:09,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-16 11:28:09,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:09,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:28:09,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:09,651 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 11:28:09,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:09,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-10-16 11:28:09,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319379412] [2020-10-16 11:28:09,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 11:28:09,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:09,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 11:28:09,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:28:09,655 INFO L87 Difference]: Start difference. First operand 478 states and 662 transitions. Second operand 19 states. [2020-10-16 11:28:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:11,576 INFO L93 Difference]: Finished difference Result 650 states and 876 transitions. [2020-10-16 11:28:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-16 11:28:11,577 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-16 11:28:11,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:11,581 INFO L225 Difference]: With dead ends: 650 [2020-10-16 11:28:11,582 INFO L226 Difference]: Without dead ends: 650 [2020-10-16 11:28:11,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2184, Invalid=4956, Unknown=0, NotChecked=0, Total=7140 [2020-10-16 11:28:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-16 11:28:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 595. [2020-10-16 11:28:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-16 11:28:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 811 transitions. [2020-10-16 11:28:11,606 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 811 transitions. Word has length 63 [2020-10-16 11:28:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:11,607 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 811 transitions. [2020-10-16 11:28:11,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 11:28:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 811 transitions. [2020-10-16 11:28:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-16 11:28:11,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:11,610 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:11,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-16 11:28:11,824 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:11,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1647338205, now seen corresponding path program 13 times [2020-10-16 11:28:11,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:11,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655461633] [2020-10-16 11:28:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:12,016 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 11:28:12,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655461633] [2020-10-16 11:28:12,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376779898] [2020-10-16 11:28:12,017 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 11:28:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:12,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 11:28:12,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:12,185 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 11:28:12,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:12,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-16 11:28:12,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326193721] [2020-10-16 11:28:12,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 11:28:12,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:12,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 11:28:12,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:28:12,188 INFO L87 Difference]: Start difference. First operand 595 states and 811 transitions. Second operand 15 states. [2020-10-16 11:28:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:12,245 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2020-10-16 11:28:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 11:28:12,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-10-16 11:28:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:12,249 INFO L225 Difference]: With dead ends: 670 [2020-10-16 11:28:12,250 INFO L226 Difference]: Without dead ends: 670 [2020-10-16 11:28:12,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:28:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-16 11:28:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 643. [2020-10-16 11:28:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-16 11:28:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 874 transitions. [2020-10-16 11:28:12,268 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 874 transitions. Word has length 70 [2020-10-16 11:28:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:12,269 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 874 transitions. [2020-10-16 11:28:12,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 11:28:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 874 transitions. [2020-10-16 11:28:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-16 11:28:12,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:12,271 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:12,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 11:28:12,485 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:12,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:12,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1171001041, now seen corresponding path program 14 times [2020-10-16 11:28:12,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:12,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101854822] [2020-10-16 11:28:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:12,657 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 11:28:12,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101854822] [2020-10-16 11:28:12,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785530480] [2020-10-16 11:28:12,658 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 11:28:12,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:28:12,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:12,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 11:28:12,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:12,801 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 11:28:12,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:12,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-16 11:28:12,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136315922] [2020-10-16 11:28:12,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:28:12,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:12,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:28:12,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:28:12,804 INFO L87 Difference]: Start difference. First operand 643 states and 874 transitions. Second operand 16 states. [2020-10-16 11:28:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:12,872 INFO L93 Difference]: Finished difference Result 718 states and 970 transitions. [2020-10-16 11:28:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 11:28:12,873 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-16 11:28:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:12,876 INFO L225 Difference]: With dead ends: 718 [2020-10-16 11:28:12,876 INFO L226 Difference]: Without dead ends: 718 [2020-10-16 11:28:12,877 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 11:28:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-16 11:28:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 691. [2020-10-16 11:28:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-16 11:28:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 937 transitions. [2020-10-16 11:28:12,893 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 937 transitions. Word has length 74 [2020-10-16 11:28:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:12,893 INFO L481 AbstractCegarLoop]: Abstraction has 691 states and 937 transitions. [2020-10-16 11:28:12,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:28:12,894 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 937 transitions. [2020-10-16 11:28:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-16 11:28:12,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:12,896 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:13,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:13,111 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash 776210049, now seen corresponding path program 15 times [2020-10-16 11:28:13,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:13,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145182749] [2020-10-16 11:28:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:13,305 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 11:28:13,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145182749] [2020-10-16 11:28:13,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833984395] [2020-10-16 11:28:13,306 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 11:28:13,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-16 11:28:13,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:13,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:28:13,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:13,594 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 11:28:13,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:13,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 23 [2020-10-16 11:28:13,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598845304] [2020-10-16 11:28:13,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:28:13,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:13,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:28:13,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:28:13,597 INFO L87 Difference]: Start difference. First operand 691 states and 937 transitions. Second operand 23 states. [2020-10-16 11:28:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:17,020 INFO L93 Difference]: Finished difference Result 896 states and 1188 transitions. [2020-10-16 11:28:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-16 11:28:17,021 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 78 [2020-10-16 11:28:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:17,025 INFO L225 Difference]: With dead ends: 896 [2020-10-16 11:28:17,025 INFO L226 Difference]: Without dead ends: 896 [2020-10-16 11:28:17,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4844 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4320, Invalid=10200, Unknown=0, NotChecked=0, Total=14520 [2020-10-16 11:28:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-16 11:28:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 832. [2020-10-16 11:28:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-16 11:28:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1114 transitions. [2020-10-16 11:28:17,071 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1114 transitions. Word has length 78 [2020-10-16 11:28:17,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:17,072 INFO L481 AbstractCegarLoop]: Abstraction has 832 states and 1114 transitions. [2020-10-16 11:28:17,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:28:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1114 transitions. [2020-10-16 11:28:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-16 11:28:17,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:17,074 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:17,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 11:28:17,288 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1559138385, now seen corresponding path program 16 times [2020-10-16 11:28:17,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:17,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318652390] [2020-10-16 11:28:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:17,477 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 11:28:17,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318652390] [2020-10-16 11:28:17,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998476432] [2020-10-16 11:28:17,478 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 11:28:17,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:28:17,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:17,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 11:28:17,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:17,766 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 11:28:17,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:17,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-16 11:28:17,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431554028] [2020-10-16 11:28:17,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:28:17,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:17,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:28:17,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:28:17,768 INFO L87 Difference]: Start difference. First operand 832 states and 1114 transitions. Second operand 18 states. [2020-10-16 11:28:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:17,851 INFO L93 Difference]: Finished difference Result 916 states and 1220 transitions. [2020-10-16 11:28:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 11:28:17,851 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-16 11:28:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:17,856 INFO L225 Difference]: With dead ends: 916 [2020-10-16 11:28:17,856 INFO L226 Difference]: Without dead ends: 916 [2020-10-16 11:28:17,856 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 11:28:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-16 11:28:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 886. [2020-10-16 11:28:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-10-16 11:28:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1184 transitions. [2020-10-16 11:28:17,874 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1184 transitions. Word has length 85 [2020-10-16 11:28:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:17,874 INFO L481 AbstractCegarLoop]: Abstraction has 886 states and 1184 transitions. [2020-10-16 11:28:17,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:28:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1184 transitions. [2020-10-16 11:28:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-16 11:28:17,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:17,877 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:18,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 11:28:18,091 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:18,091 INFO L82 PathProgramCache]: Analyzing trace with hash -933866561, now seen corresponding path program 17 times [2020-10-16 11:28:18,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:18,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666958412] [2020-10-16 11:28:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:18,306 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 11:28:18,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666958412] [2020-10-16 11:28:18,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402787791] [2020-10-16 11:28:18,307 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 11:28:18,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-16 11:28:18,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:18,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 11:28:18,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:18,484 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 11:28:18,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:18,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-16 11:28:18,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236007615] [2020-10-16 11:28:18,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 11:28:18,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:18,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 11:28:18,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:28:18,486 INFO L87 Difference]: Start difference. First operand 886 states and 1184 transitions. Second operand 19 states. [2020-10-16 11:28:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:18,589 INFO L93 Difference]: Finished difference Result 970 states and 1290 transitions. [2020-10-16 11:28:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 11:28:18,590 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-16 11:28:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:18,595 INFO L225 Difference]: With dead ends: 970 [2020-10-16 11:28:18,595 INFO L226 Difference]: Without dead ends: 970 [2020-10-16 11:28:18,596 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 11:28:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-16 11:28:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 940. [2020-10-16 11:28:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-16 11:28:18,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1254 transitions. [2020-10-16 11:28:18,620 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1254 transitions. Word has length 89 [2020-10-16 11:28:18,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:18,620 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 1254 transitions. [2020-10-16 11:28:18,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 11:28:18,621 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1254 transitions. [2020-10-16 11:28:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-16 11:28:18,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:18,624 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:18,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:18,839 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash -365776851, now seen corresponding path program 18 times [2020-10-16 11:28:18,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:18,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280456468] [2020-10-16 11:28:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:19,201 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 11:28:19,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280456468] [2020-10-16 11:28:19,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547775328] [2020-10-16 11:28:19,202 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 11:28:19,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-10-16 11:28:19,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:19,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 11:28:19,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:19,664 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 11:28:19,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:19,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 27 [2020-10-16 11:28:19,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253135357] [2020-10-16 11:28:19,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 11:28:19,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:19,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 11:28:19,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-16 11:28:19,667 INFO L87 Difference]: Start difference. First operand 940 states and 1254 transitions. Second operand 27 states. [2020-10-16 11:28:25,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:25,516 INFO L93 Difference]: Finished difference Result 1178 states and 1542 transitions. [2020-10-16 11:28:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2020-10-16 11:28:25,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-10-16 11:28:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:25,522 INFO L225 Difference]: With dead ends: 1178 [2020-10-16 11:28:25,522 INFO L226 Difference]: Without dead ends: 1178 [2020-10-16 11:28:25,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9308 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7695, Invalid=18711, Unknown=0, NotChecked=0, Total=26406 [2020-10-16 11:28:25,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-10-16 11:28:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1105. [2020-10-16 11:28:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-10-16 11:28:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1459 transitions. [2020-10-16 11:28:25,548 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1459 transitions. Word has length 93 [2020-10-16 11:28:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:25,548 INFO L481 AbstractCegarLoop]: Abstraction has 1105 states and 1459 transitions. [2020-10-16 11:28:25,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 11:28:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1459 transitions. [2020-10-16 11:28:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-16 11:28:25,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:25,552 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:25,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:25,765 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:25,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2077738871, now seen corresponding path program 19 times [2020-10-16 11:28:25,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:25,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509446081] [2020-10-16 11:28:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:26,030 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 11:28:26,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509446081] [2020-10-16 11:28:26,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614472227] [2020-10-16 11:28:26,030 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 11:28:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:26,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 11:28:26,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:26,171 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 11:28:26,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:26,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-16 11:28:26,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570352032] [2020-10-16 11:28:26,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 11:28:26,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:26,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 11:28:26,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-16 11:28:26,174 INFO L87 Difference]: Start difference. First operand 1105 states and 1459 transitions. Second operand 21 states. [2020-10-16 11:28:26,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:26,264 INFO L93 Difference]: Finished difference Result 1198 states and 1575 transitions. [2020-10-16 11:28:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 11:28:26,265 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-10-16 11:28:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:26,269 INFO L225 Difference]: With dead ends: 1198 [2020-10-16 11:28:26,270 INFO L226 Difference]: Without dead ends: 1198 [2020-10-16 11:28:26,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-16 11:28:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2020-10-16 11:28:26,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1165. [2020-10-16 11:28:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-10-16 11:28:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1536 transitions. [2020-10-16 11:28:26,289 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1536 transitions. Word has length 100 [2020-10-16 11:28:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:26,291 INFO L481 AbstractCegarLoop]: Abstraction has 1165 states and 1536 transitions. [2020-10-16 11:28:26,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 11:28:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1536 transitions. [2020-10-16 11:28:26,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-16 11:28:26,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:26,294 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:26,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:26,508 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash 110062427, now seen corresponding path program 20 times [2020-10-16 11:28:26,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:26,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627754817] [2020-10-16 11:28:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:26,783 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 11:28:26,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627754817] [2020-10-16 11:28:26,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699353885] [2020-10-16 11:28:26,784 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 11:28:26,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:28:26,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:26,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 11:28:26,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:26,937 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 11:28:26,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:26,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-16 11:28:26,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814629662] [2020-10-16 11:28:26,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 11:28:26,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:26,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 11:28:26,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-16 11:28:26,942 INFO L87 Difference]: Start difference. First operand 1165 states and 1536 transitions. Second operand 22 states. [2020-10-16 11:28:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:27,038 INFO L93 Difference]: Finished difference Result 1258 states and 1652 transitions. [2020-10-16 11:28:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 11:28:27,044 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 104 [2020-10-16 11:28:27,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:27,049 INFO L225 Difference]: With dead ends: 1258 [2020-10-16 11:28:27,049 INFO L226 Difference]: Without dead ends: 1258 [2020-10-16 11:28:27,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 104 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 11:28:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-16 11:28:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1225. [2020-10-16 11:28:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-10-16 11:28:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1613 transitions. [2020-10-16 11:28:27,070 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1613 transitions. Word has length 104 [2020-10-16 11:28:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:27,070 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 1613 transitions. [2020-10-16 11:28:27,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 11:28:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1613 transitions. [2020-10-16 11:28:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-16 11:28:27,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:27,074 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:27,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-16 11:28:27,289 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:27,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:27,289 INFO L82 PathProgramCache]: Analyzing trace with hash -912464595, now seen corresponding path program 21 times [2020-10-16 11:28:27,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:27,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875917302] [2020-10-16 11:28:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:27,731 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 11:28:27,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875917302] [2020-10-16 11:28:27,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305223523] [2020-10-16 11:28:27,732 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 11:28:27,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-16 11:28:27,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:27,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:28:27,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:28,111 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 11:28:28,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:28,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 31 [2020-10-16 11:28:28,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142656287] [2020-10-16 11:28:28,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-16 11:28:28,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:28,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-16 11:28:28,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2020-10-16 11:28:28,114 INFO L87 Difference]: Start difference. First operand 1225 states and 1613 transitions. Second operand 31 states. [2020-10-16 11:28:37,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:37,164 INFO L93 Difference]: Finished difference Result 1460 states and 1896 transitions. [2020-10-16 11:28:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2020-10-16 11:28:37,165 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-10-16 11:28:37,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:37,169 INFO L225 Difference]: With dead ends: 1460 [2020-10-16 11:28:37,170 INFO L226 Difference]: Without dead ends: 1460 [2020-10-16 11:28:37,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16281 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=12705, Invalid=31605, Unknown=0, NotChecked=0, Total=44310 [2020-10-16 11:28:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-10-16 11:28:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1414. [2020-10-16 11:28:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1414 states. [2020-10-16 11:28:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1846 transitions. [2020-10-16 11:28:37,194 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1846 transitions. Word has length 108 [2020-10-16 11:28:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:37,194 INFO L481 AbstractCegarLoop]: Abstraction has 1414 states and 1846 transitions. [2020-10-16 11:28:37,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-16 11:28:37,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1846 transitions. [2020-10-16 11:28:37,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-16 11:28:37,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:37,198 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:37,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 11:28:37,413 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:37,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2018487717, now seen corresponding path program 22 times [2020-10-16 11:28:37,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:37,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846619033] [2020-10-16 11:28:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:37,592 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 11:28:37,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846619033] [2020-10-16 11:28:37,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157131837] [2020-10-16 11:28:37,593 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 11:28:38,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:28:38,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:38,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 11:28:38,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:38,753 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 11:28:38,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:38,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-16 11:28:38,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334262065] [2020-10-16 11:28:38,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 11:28:38,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 11:28:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-16 11:28:38,755 INFO L87 Difference]: Start difference. First operand 1414 states and 1846 transitions. Second operand 13 states. [2020-10-16 11:28:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:38,849 INFO L93 Difference]: Finished difference Result 1589 states and 2052 transitions. [2020-10-16 11:28:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 11:28:38,849 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 115 [2020-10-16 11:28:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:38,856 INFO L225 Difference]: With dead ends: 1589 [2020-10-16 11:28:38,856 INFO L226 Difference]: Without dead ends: 1589 [2020-10-16 11:28:38,856 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 11:28:38,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-10-16 11:28:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1543. [2020-10-16 11:28:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-10-16 11:28:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2002 transitions. [2020-10-16 11:28:38,881 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2002 transitions. Word has length 115 [2020-10-16 11:28:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:38,881 INFO L481 AbstractCegarLoop]: Abstraction has 1543 states and 2002 transitions. [2020-10-16 11:28:38,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 11:28:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2002 transitions. [2020-10-16 11:28:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-16 11:28:38,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:38,886 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:39,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:39,100 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:39,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2042676161, now seen corresponding path program 23 times [2020-10-16 11:28:39,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:39,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122996072] [2020-10-16 11:28:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:39,355 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 11:28:39,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122996072] [2020-10-16 11:28:39,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749836446] [2020-10-16 11:28:39,364 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 11:28:39,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-16 11:28:39,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:39,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:28:39,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:39,769 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 11:28:39,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:39,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-16 11:28:39,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711232343] [2020-10-16 11:28:39,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 11:28:39,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 11:28:39,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-16 11:28:39,772 INFO L87 Difference]: Start difference. First operand 1543 states and 2002 transitions. Second operand 14 states. [2020-10-16 11:28:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:39,851 INFO L93 Difference]: Finished difference Result 1718 states and 2208 transitions. [2020-10-16 11:28:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:28:39,852 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2020-10-16 11:28:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:39,859 INFO L225 Difference]: With dead ends: 1718 [2020-10-16 11:28:39,859 INFO L226 Difference]: Without dead ends: 1718 [2020-10-16 11:28:39,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-16 11:28:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2020-10-16 11:28:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1672. [2020-10-16 11:28:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-10-16 11:28:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2158 transitions. [2020-10-16 11:28:39,886 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2158 transitions. Word has length 118 [2020-10-16 11:28:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:39,886 INFO L481 AbstractCegarLoop]: Abstraction has 1672 states and 2158 transitions. [2020-10-16 11:28:39,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 11:28:39,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2158 transitions. [2020-10-16 11:28:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-16 11:28:39,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:39,891 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:40,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 11:28:40,105 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:40,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1052962661, now seen corresponding path program 24 times [2020-10-16 11:28:40,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:40,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880676343] [2020-10-16 11:28:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:40,434 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 11:28:40,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880676343] [2020-10-16 11:28:40,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875150892] [2020-10-16 11:28:40,436 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 11:28:41,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-10-16 11:28:41,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:41,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 11:28:41,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:41,113 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 11:28:41,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:41,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-16 11:28:41,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154536447] [2020-10-16 11:28:41,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 11:28:41,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:41,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 11:28:41,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:28:41,115 INFO L87 Difference]: Start difference. First operand 1672 states and 2158 transitions. Second operand 15 states. [2020-10-16 11:28:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:41,208 INFO L93 Difference]: Finished difference Result 1847 states and 2364 transitions. [2020-10-16 11:28:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 11:28:41,209 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 121 [2020-10-16 11:28:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:41,214 INFO L225 Difference]: With dead ends: 1847 [2020-10-16 11:28:41,215 INFO L226 Difference]: Without dead ends: 1847 [2020-10-16 11:28:41,215 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 11:28:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2020-10-16 11:28:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1801. [2020-10-16 11:28:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1801 states. [2020-10-16 11:28:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2314 transitions. [2020-10-16 11:28:41,239 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2314 transitions. Word has length 121 [2020-10-16 11:28:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:41,240 INFO L481 AbstractCegarLoop]: Abstraction has 1801 states and 2314 transitions. [2020-10-16 11:28:41,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 11:28:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2314 transitions. [2020-10-16 11:28:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-16 11:28:41,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:41,245 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:41,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:41,461 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:41,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1691329151, now seen corresponding path program 25 times [2020-10-16 11:28:41,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:41,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474518662] [2020-10-16 11:28:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:41,671 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 11:28:41,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474518662] [2020-10-16 11:28:41,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941263626] [2020-10-16 11:28:41,672 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 11:28:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:41,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 11:28:41,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:41,830 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 11:28:41,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:41,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-16 11:28:41,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674701761] [2020-10-16 11:28:41,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:28:41,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:41,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:28:41,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:28:41,833 INFO L87 Difference]: Start difference. First operand 1801 states and 2314 transitions. Second operand 16 states. [2020-10-16 11:28:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:41,983 INFO L93 Difference]: Finished difference Result 1976 states and 2520 transitions. [2020-10-16 11:28:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 11:28:41,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 124 [2020-10-16 11:28:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:41,995 INFO L225 Difference]: With dead ends: 1976 [2020-10-16 11:28:41,995 INFO L226 Difference]: Without dead ends: 1976 [2020-10-16 11:28:41,996 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 11:28:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-16 11:28:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1930. [2020-10-16 11:28:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-16 11:28:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2470 transitions. [2020-10-16 11:28:42,032 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2470 transitions. Word has length 124 [2020-10-16 11:28:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:42,032 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2470 transitions. [2020-10-16 11:28:42,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:28:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2470 transitions. [2020-10-16 11:28:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-16 11:28:42,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:42,041 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:42,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 11:28:42,256 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:42,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1152246053, now seen corresponding path program 26 times [2020-10-16 11:28:42,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:42,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516827885] [2020-10-16 11:28:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:42,495 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 11:28:42,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516827885] [2020-10-16 11:28:42,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056799091] [2020-10-16 11:28:42,495 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 11:28:42,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:28:42,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:42,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 11:28:42,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:42,668 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 11:28:42,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:42,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-16 11:28:42,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621852042] [2020-10-16 11:28:42,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 11:28:42,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:42,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 11:28:42,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:28:42,670 INFO L87 Difference]: Start difference. First operand 1930 states and 2470 transitions. Second operand 17 states. [2020-10-16 11:28:42,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:42,748 INFO L93 Difference]: Finished difference Result 2105 states and 2676 transitions. [2020-10-16 11:28:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 11:28:42,748 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 127 [2020-10-16 11:28:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:42,754 INFO L225 Difference]: With dead ends: 2105 [2020-10-16 11:28:42,755 INFO L226 Difference]: Without dead ends: 2105 [2020-10-16 11:28:42,755 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 11:28:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2020-10-16 11:28:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2059. [2020-10-16 11:28:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-10-16 11:28:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2626 transitions. [2020-10-16 11:28:42,781 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2626 transitions. Word has length 127 [2020-10-16 11:28:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:42,782 INFO L481 AbstractCegarLoop]: Abstraction has 2059 states and 2626 transitions. [2020-10-16 11:28:42,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 11:28:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2626 transitions. [2020-10-16 11:28:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-16 11:28:42,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:42,788 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:43,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 11:28:43,001 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:43,001 INFO L82 PathProgramCache]: Analyzing trace with hash 210393279, now seen corresponding path program 27 times [2020-10-16 11:28:43,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:43,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237960463] [2020-10-16 11:28:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:43,249 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 11:28:43,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237960463] [2020-10-16 11:28:43,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811408715] [2020-10-16 11:28:43,251 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 11:28:43,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-10-16 11:28:43,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:43,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 11:28:43,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:43,733 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 11:28:43,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:43,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-16 11:28:43,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400938815] [2020-10-16 11:28:43,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 11:28:43,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:43,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 11:28:43,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:28:43,735 INFO L87 Difference]: Start difference. First operand 2059 states and 2626 transitions. Second operand 18 states. [2020-10-16 11:28:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:43,810 INFO L93 Difference]: Finished difference Result 2234 states and 2832 transitions. [2020-10-16 11:28:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 11:28:43,810 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2020-10-16 11:28:43,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:43,817 INFO L225 Difference]: With dead ends: 2234 [2020-10-16 11:28:43,817 INFO L226 Difference]: Without dead ends: 2234 [2020-10-16 11:28:43,817 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 11:28:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-16 11:28:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2188. [2020-10-16 11:28:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2020-10-16 11:28:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2782 transitions. [2020-10-16 11:28:43,843 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2782 transitions. Word has length 130 [2020-10-16 11:28:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:43,843 INFO L481 AbstractCegarLoop]: Abstraction has 2188 states and 2782 transitions. [2020-10-16 11:28:43,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 11:28:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2782 transitions. [2020-10-16 11:28:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-16 11:28:43,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:43,849 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:44,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 11:28:44,063 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash 495747813, now seen corresponding path program 28 times [2020-10-16 11:28:44,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:44,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75797458] [2020-10-16 11:28:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:44,308 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 11:28:44,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75797458] [2020-10-16 11:28:44,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541168658] [2020-10-16 11:28:44,309 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 11:28:45,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:28:45,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:45,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 11:28:45,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:45,584 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 11:28:45,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:45,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-16 11:28:45,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102503868] [2020-10-16 11:28:45,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 11:28:45,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:45,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 11:28:45,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:28:45,587 INFO L87 Difference]: Start difference. First operand 2188 states and 2782 transitions. Second operand 19 states. [2020-10-16 11:28:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:45,692 INFO L93 Difference]: Finished difference Result 2363 states and 2988 transitions. [2020-10-16 11:28:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 11:28:45,692 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 133 [2020-10-16 11:28:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:45,701 INFO L225 Difference]: With dead ends: 2363 [2020-10-16 11:28:45,701 INFO L226 Difference]: Without dead ends: 2363 [2020-10-16 11:28:45,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 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 11:28:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-10-16 11:28:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2317. [2020-10-16 11:28:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-10-16 11:28:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2938 transitions. [2020-10-16 11:28:45,728 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2938 transitions. Word has length 133 [2020-10-16 11:28:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:45,728 INFO L481 AbstractCegarLoop]: Abstraction has 2317 states and 2938 transitions. [2020-10-16 11:28:45,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 11:28:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2938 transitions. [2020-10-16 11:28:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-16 11:28:45,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:45,731 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:45,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:45,932 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1752391423, now seen corresponding path program 29 times [2020-10-16 11:28:45,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:45,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004766461] [2020-10-16 11:28:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:46,231 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 11:28:46,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004766461] [2020-10-16 11:28:46,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742936006] [2020-10-16 11:28:46,231 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 11:28:46,491 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-16 11:28:46,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:46,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 11:28:46,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:46,539 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 11:28:46,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:46,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-16 11:28:46,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828295987] [2020-10-16 11:28:46,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 11:28:46,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:46,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 11:28:46,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:28:46,541 INFO L87 Difference]: Start difference. First operand 2317 states and 2938 transitions. Second operand 20 states. [2020-10-16 11:28:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:46,649 INFO L93 Difference]: Finished difference Result 2492 states and 3144 transitions. [2020-10-16 11:28:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 11:28:46,650 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2020-10-16 11:28:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:46,655 INFO L225 Difference]: With dead ends: 2492 [2020-10-16 11:28:46,655 INFO L226 Difference]: Without dead ends: 2492 [2020-10-16 11:28:46,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-16 11:28:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2020-10-16 11:28:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2446. [2020-10-16 11:28:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2020-10-16 11:28:46,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3094 transitions. [2020-10-16 11:28:46,691 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3094 transitions. Word has length 136 [2020-10-16 11:28:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:46,692 INFO L481 AbstractCegarLoop]: Abstraction has 2446 states and 3094 transitions. [2020-10-16 11:28:46,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 11:28:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3094 transitions. [2020-10-16 11:28:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-16 11:28:46,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:46,696 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:46,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-16 11:28:46,912 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:46,912 INFO L82 PathProgramCache]: Analyzing trace with hash -807742299, now seen corresponding path program 30 times [2020-10-16 11:28:46,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:46,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360855971] [2020-10-16 11:28:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:47,293 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 11:28:47,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360855971] [2020-10-16 11:28:47,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515483673] [2020-10-16 11:28:47,294 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 11:28:48,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2020-10-16 11:28:48,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:48,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 11:28:48,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:48,297 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 11:28:48,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:48,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-16 11:28:48,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634176792] [2020-10-16 11:28:48,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 11:28:48,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:48,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 11:28:48,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-16 11:28:48,299 INFO L87 Difference]: Start difference. First operand 2446 states and 3094 transitions. Second operand 21 states. [2020-10-16 11:28:48,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:48,386 INFO L93 Difference]: Finished difference Result 2621 states and 3300 transitions. [2020-10-16 11:28:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 11:28:48,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2020-10-16 11:28:48,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:48,394 INFO L225 Difference]: With dead ends: 2621 [2020-10-16 11:28:48,394 INFO L226 Difference]: Without dead ends: 2621 [2020-10-16 11:28:48,397 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 11:28:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2020-10-16 11:28:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2575. [2020-10-16 11:28:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-16 11:28:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3250 transitions. [2020-10-16 11:28:48,439 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3250 transitions. Word has length 139 [2020-10-16 11:28:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:48,439 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3250 transitions. [2020-10-16 11:28:48,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 11:28:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3250 transitions. [2020-10-16 11:28:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-16 11:28:48,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:48,443 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:48,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:28:48,644 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:48,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:48,644 INFO L82 PathProgramCache]: Analyzing trace with hash 277787967, now seen corresponding path program 31 times [2020-10-16 11:28:48,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:48,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525672325] [2020-10-16 11:28:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:48,966 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 11:28:48,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525672325] [2020-10-16 11:28:48,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425808794] [2020-10-16 11:28:48,966 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 11:28:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:49,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 11:28:49,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:49,152 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 11:28:49,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:49,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-16 11:28:49,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779949073] [2020-10-16 11:28:49,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 11:28:49,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:49,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 11:28:49,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-16 11:28:49,157 INFO L87 Difference]: Start difference. First operand 2575 states and 3250 transitions. Second operand 22 states. [2020-10-16 11:28:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:49,297 INFO L93 Difference]: Finished difference Result 2750 states and 3456 transitions. [2020-10-16 11:28:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 11:28:49,297 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-16 11:28:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:49,301 INFO L225 Difference]: With dead ends: 2750 [2020-10-16 11:28:49,302 INFO L226 Difference]: Without dead ends: 2750 [2020-10-16 11:28:49,302 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 11:28:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2020-10-16 11:28:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2704. [2020-10-16 11:28:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-10-16 11:28:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3406 transitions. [2020-10-16 11:28:49,331 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3406 transitions. Word has length 142 [2020-10-16 11:28:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:49,332 INFO L481 AbstractCegarLoop]: Abstraction has 2704 states and 3406 transitions. [2020-10-16 11:28:49,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 11:28:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3406 transitions. [2020-10-16 11:28:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-16 11:28:49,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:49,336 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:49,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-16 11:28:49,537 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:49,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:49,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1793796507, now seen corresponding path program 32 times [2020-10-16 11:28:49,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:49,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581842651] [2020-10-16 11:28:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:49,901 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 11:28:49,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581842651] [2020-10-16 11:28:49,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023595481] [2020-10-16 11:28:49,902 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 11:28:50,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:28:50,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:50,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 11:28:50,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:50,095 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 11:28:50,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:50,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-16 11:28:50,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223205787] [2020-10-16 11:28:50,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 11:28:50,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:50,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 11:28:50,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:28:50,098 INFO L87 Difference]: Start difference. First operand 2704 states and 3406 transitions. Second operand 23 states. [2020-10-16 11:28:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:28:50,216 INFO L93 Difference]: Finished difference Result 2833 states and 3562 transitions. [2020-10-16 11:28:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 11:28:50,217 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 145 [2020-10-16 11:28:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:28:50,222 INFO L225 Difference]: With dead ends: 2833 [2020-10-16 11:28:50,222 INFO L226 Difference]: Without dead ends: 2833 [2020-10-16 11:28:50,222 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 11:28:50,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-10-16 11:28:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2833. [2020-10-16 11:28:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-10-16 11:28:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3562 transitions. [2020-10-16 11:28:50,247 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3562 transitions. Word has length 145 [2020-10-16 11:28:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:28:50,248 INFO L481 AbstractCegarLoop]: Abstraction has 2833 states and 3562 transitions. [2020-10-16 11:28:50,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 11:28:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3562 transitions. [2020-10-16 11:28:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-16 11:28:50,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:50,251 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:28:50,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 11:28:50,452 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:50,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1981785217, now seen corresponding path program 33 times [2020-10-16 11:28:50,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:50,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740017508] [2020-10-16 11:28:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:28:53,569 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 11:28:53,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740017508] [2020-10-16 11:28:53,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423382333] [2020-10-16 11:28:53,570 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 11:28:54,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2020-10-16 11:28:54,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:28:54,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-16 11:28:54,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:28:54,479 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 11:28:54,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:28:54,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-16 11:28:54,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654903467] [2020-10-16 11:28:54,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-16 11:28:54,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:28:54,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-16 11:28:54,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 11:28:54,482 INFO L87 Difference]: Start difference. First operand 2833 states and 3562 transitions. Second operand 63 states. [2020-10-16 11:30:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:30:16,271 INFO L93 Difference]: Finished difference Result 32926 states and 45933 transitions. [2020-10-16 11:30:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 633 states. [2020-10-16 11:30:16,272 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-10-16 11:30:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:30:16,422 INFO L225 Difference]: With dead ends: 32926 [2020-10-16 11:30:16,422 INFO L226 Difference]: Without dead ends: 32924 [2020-10-16 11:30:16,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 632 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162735 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=2407, Invalid=398915, Unknown=0, NotChecked=0, Total=401322 [2020-10-16 11:30:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32924 states. [2020-10-16 11:30:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32924 to 2967. [2020-10-16 11:30:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2967 states. [2020-10-16 11:30:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3794 transitions. [2020-10-16 11:30:16,644 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3794 transitions. Word has length 148 [2020-10-16 11:30:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:30:16,645 INFO L481 AbstractCegarLoop]: Abstraction has 2967 states and 3794 transitions. [2020-10-16 11:30:16,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-16 11:30:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3794 transitions. [2020-10-16 11:30:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-16 11:30:16,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:30:16,650 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:30:16,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-16 11:30:16,865 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:30:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:30:16,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1970430061, now seen corresponding path program 34 times [2020-10-16 11:30:16,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:30:16,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089250997] [2020-10-16 11:30:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:30:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:30:19,980 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 11:30:19,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089250997] [2020-10-16 11:30:19,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629870875] [2020-10-16 11:30:19,981 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 11:30:22,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:30:22,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:30:22,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-16 11:30:22,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:30:22,389 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 11:30:22,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:30:22,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-16 11:30:22,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204547270] [2020-10-16 11:30:22,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-16 11:30:22,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:30:22,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-16 11:30:22,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 11:30:22,391 INFO L87 Difference]: Start difference. First operand 2967 states and 3794 transitions. Second operand 63 states. [2020-10-16 11:31:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:31:43,840 INFO L93 Difference]: Finished difference Result 30945 states and 43173 transitions. [2020-10-16 11:31:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2020-10-16 11:31:43,841 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-10-16 11:31:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:31:43,886 INFO L225 Difference]: With dead ends: 30945 [2020-10-16 11:31:43,886 INFO L226 Difference]: Without dead ends: 30943 [2020-10-16 11:31:43,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 612 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151525 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=2327, Invalid=374055, Unknown=0, NotChecked=0, Total=376382 [2020-10-16 11:31:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30943 states. [2020-10-16 11:31:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30943 to 2973. [2020-10-16 11:31:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2020-10-16 11:31:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 3801 transitions. [2020-10-16 11:31:44,094 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 3801 transitions. Word has length 148 [2020-10-16 11:31:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:31:44,095 INFO L481 AbstractCegarLoop]: Abstraction has 2973 states and 3801 transitions. [2020-10-16 11:31:44,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-16 11:31:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 3801 transitions. [2020-10-16 11:31:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-16 11:31:44,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:31:44,100 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:31:44,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 11:31:44,315 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:31:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:31:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1092472257, now seen corresponding path program 35 times [2020-10-16 11:31:44,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:31:44,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183121463] [2020-10-16 11:31:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:31:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:31:47,786 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 11:31:47,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183121463] [2020-10-16 11:31:47,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489763178] [2020-10-16 11:31:47,786 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 11:31:48,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-16 11:31:48,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:31:48,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-16 11:31:48,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:31:48,274 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 11:31:48,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:31:48,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-16 11:31:48,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025778858] [2020-10-16 11:31:48,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-16 11:31:48,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:31:48,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-16 11:31:48,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 11:31:48,278 INFO L87 Difference]: Start difference. First operand 2973 states and 3801 transitions. Second operand 63 states. Received shutdown request... [2020-10-16 11:31:53,980 WARN L210 SmtUtils]: Removed 5 from assertion stack [2020-10-16 11:31:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-16 11:31:54,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 11:31:54,181 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 11:31:54,185 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 11:31:54,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:31:54 BasicIcfg [2020-10-16 11:31:54,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:31:54,187 INFO L168 Benchmark]: Toolchain (without parser) took 237631.23 ms. Allocated memory was 139.5 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 99.7 MB in the beginning and 302.8 MB in the end (delta: -203.1 MB). Peak memory consumption was 920.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:31:54,187 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:31:54,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1130.03 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 109.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:31:54,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.33 ms. Allocated memory is still 205.0 MB. Free memory was 109.2 MB in the beginning and 106.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:31:54,188 INFO L168 Benchmark]: Boogie Preprocessor took 30.95 ms. Allocated memory is still 205.0 MB. Free memory was 106.5 MB in the beginning and 104.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:31:54,188 INFO L168 Benchmark]: RCFGBuilder took 490.34 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 104.4 MB in the beginning and 195.5 MB in the end (delta: -91.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:31:54,189 INFO L168 Benchmark]: TraceAbstraction took 235913.62 ms. Allocated memory was 237.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 195.5 MB in the beginning and 302.8 MB in the end (delta: -107.3 MB). Peak memory consumption was 918.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:31:54,190 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1130.03 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 109.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.33 ms. Allocated memory is still 205.0 MB. Free memory was 109.2 MB in the beginning and 106.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.95 ms. Allocated memory is still 205.0 MB. Free memory was 106.5 MB in the beginning and 104.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.34 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 104.4 MB in the beginning and 195.5 MB in the end (delta: -91.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235913.62 ms. Allocated memory was 237.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 195.5 MB in the beginning and 302.8 MB in the end (delta: -107.3 MB). Peak memory consumption was 918.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 424 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 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 51 states, 63 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 4ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 235.7s, OverallIterations: 37, TraceHistogramMax: 20, AutomataDifference: 193.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 5343 SDtfs, 13629 SDslu, 278987 SDs, 0 SdLazy, 159622 SolverSat, 2903 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5969 GetRequests, 3628 SyntacticMatches, 6 SemanticMatches, 2334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349173 ImplicationChecksByTransitivity, 94.2s 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: 1.1s AutomataMinimizationTime, 36 MinimizatonAttempts, 59079 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 10.1s SatisfiabilityAnalysisTime, 17.3s 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