/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:50:15,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:50:15,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:50:15,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:50:15,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:50:15,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:50:15,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:50:15,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:50:15,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:50:15,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:50:15,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:50:15,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:50:15,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:50:15,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:50:15,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:50:15,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:50:15,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:50:15,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:50:15,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:50:15,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:50:15,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:50:15,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:50:15,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:50:15,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:50:15,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 00:50:15,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 00:50:15,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 00:50:15,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 00:50:15,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 00:50:15,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 00:50:15,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:50:15,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:50:15,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:50:15,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:50:15,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:50:15,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:50:15,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:50:15,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:50:15,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:50:15,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:50:15,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:50:15,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-22 00:50:15,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:50:15,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:50:15,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:50:15,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:50:15,351 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:50:15,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:50:15,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:50:15,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:50:15,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:50:15,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:50:15,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:50:15,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:50:15,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:50:15,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:50:15,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:50:15,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:50:15,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:50:15,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:50:15,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:50:15,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:50:15,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:50:15,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:50:15,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:50:15,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:50:15,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:50:15,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:50:15,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:50:15,358 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:50:15,358 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:50:15,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:50:15,359 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:50:15,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:50:15,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:50:15,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:50:15,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:50:15,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:50:15,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-22 00:50:15,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb9e63d2/8a5e2286d02e4061935a6fbb5477dedb/FLAGf7217e5d8 [2020-10-22 00:50:16,300 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:50:16,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-22 00:50:16,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb9e63d2/8a5e2286d02e4061935a6fbb5477dedb/FLAGf7217e5d8 [2020-10-22 00:50:16,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb9e63d2/8a5e2286d02e4061935a6fbb5477dedb [2020-10-22 00:50:16,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:50:16,565 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:50:16,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:50:16,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:50:16,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:50:16,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:50:16" (1/1) ... [2020-10-22 00:50:16,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e3fc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:16, skipping insertion in model container [2020-10-22 00:50:16,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:50:16" (1/1) ... [2020-10-22 00:50:16,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:50:16,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:50:17,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:50:17,229 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:50:17,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:50:17,516 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:50:17,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17 WrapperNode [2020-10-22 00:50:17,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:50:17,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:50:17,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:50:17,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:50:17,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:50:17,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:50:17,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:50:17,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:50:17,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... [2020-10-22 00:50:17,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:50:17,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:50:17,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:50:17,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:50:17,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:50:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:50:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:50:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 00:50:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:50:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-22 00:50:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2020-10-22 00:50:17,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2020-10-22 00:50:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:50:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:50:17,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:50:17,705 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:50:18,125 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:50:18,125 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:50:18,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:50:18 BoogieIcfgContainer [2020-10-22 00:50:18,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:50:18,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:50:18,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:50:18,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:50:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:50:16" (1/3) ... [2020-10-22 00:50:18,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b72049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:50:18, skipping insertion in model container [2020-10-22 00:50:18,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:50:17" (2/3) ... [2020-10-22 00:50:18,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b72049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:50:18, skipping insertion in model container [2020-10-22 00:50:18,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:50:18" (3/3) ... [2020-10-22 00:50:18,136 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2020-10-22 00:50:18,149 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:50:18,149 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:50:18,156 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:50:18,157 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:50:18,185 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,185 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,185 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,186 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,186 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,186 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,187 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,187 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,187 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,187 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,188 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,188 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,188 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,188 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,189 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,189 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,189 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,189 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,190 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,190 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,190 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,190 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,191 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,194 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,195 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,195 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,195 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,195 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,195 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,196 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,196 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,196 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:50:18,209 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-22 00:50:18,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 00:50:18,241 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:50:18,242 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:50:18,242 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:50:18,242 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:50:18,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:50:18,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:50:18,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:50:18,243 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:50:18,258 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:50:18,259 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 188 flow [2020-10-22 00:50:18,261 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 188 flow [2020-10-22 00:50:18,263 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 188 flow [2020-10-22 00:50:18,326 INFO L129 PetriNetUnfolder]: 8/89 cut-off events. [2020-10-22 00:50:18,326 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-22 00:50:18,335 INFO L80 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 8/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-10-22 00:50:18,338 INFO L116 LiptonReduction]: Number of co-enabled transitions 646 [2020-10-22 00:50:19,611 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-22 00:50:19,766 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-22 00:50:20,395 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-10-22 00:50:20,554 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-22 00:50:21,843 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2020-10-22 00:50:22,326 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-22 00:50:22,331 INFO L131 LiptonReduction]: Checked pairs total: 898 [2020-10-22 00:50:22,332 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-10-22 00:50:22,339 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 17 transitions, 42 flow [2020-10-22 00:50:22,348 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 35 states. [2020-10-22 00:50:22,350 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-22 00:50:22,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 00:50:22,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:22,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:22,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:22,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1995633590, now seen corresponding path program 1 times [2020-10-22 00:50:22,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:22,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420864251] [2020-10-22 00:50:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:50:22,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420864251] [2020-10-22 00:50:22,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:50:22,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:50:22,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [835174244] [2020-10-22 00:50:22,601 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:22,604 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:22,617 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-22 00:50:22,618 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:22,677 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [162#(< thread_function_mutexThread1of1ForFork0_~i~0 20)] [2020-10-22 00:50:22,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:50:22,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:22,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:50:22,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:50:22,696 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-22 00:50:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:22,727 INFO L93 Difference]: Finished difference Result 59 states and 114 transitions. [2020-10-22 00:50:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:50:22,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-22 00:50:22,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:22,741 INFO L225 Difference]: With dead ends: 59 [2020-10-22 00:50:22,741 INFO L226 Difference]: Without dead ends: 59 [2020-10-22 00:50:22,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:50:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-22 00:50:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-22 00:50:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-22 00:50:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-22 00:50:22,788 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 8 [2020-10-22 00:50:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:22,788 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-22 00:50:22,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:50:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-22 00:50:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 00:50:22,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:22,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:22,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:50:22,791 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:22,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1403175836, now seen corresponding path program 1 times [2020-10-22 00:50:22,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:22,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142474273] [2020-10-22 00:50:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-22 00:50:22,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142474273] [2020-10-22 00:50:22,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:50:22,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:50:22,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1495604200] [2020-10-22 00:50:22,927 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:22,929 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:22,943 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 56 transitions. [2020-10-22 00:50:22,943 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:23,139 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:23,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:50:23,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:23,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:50:23,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:50:23,142 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 3 states. [2020-10-22 00:50:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:23,160 INFO L93 Difference]: Finished difference Result 92 states and 180 transitions. [2020-10-22 00:50:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:50:23,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-22 00:50:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:23,162 INFO L225 Difference]: With dead ends: 92 [2020-10-22 00:50:23,162 INFO L226 Difference]: Without dead ends: 92 [2020-10-22 00:50:23,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:50:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-22 00:50:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-10-22 00:50:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-22 00:50:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 136 transitions. [2020-10-22 00:50:23,173 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 136 transitions. Word has length 16 [2020-10-22 00:50:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:23,174 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 136 transitions. [2020-10-22 00:50:23,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:50:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 136 transitions. [2020-10-22 00:50:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 00:50:23,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:23,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:23,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:50:23,176 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash -572322358, now seen corresponding path program 1 times [2020-10-22 00:50:23,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:23,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519858496] [2020-10-22 00:50:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-22 00:50:23,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519858496] [2020-10-22 00:50:23,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454224754] [2020-10-22 00:50:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:23,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 00:50:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 00:50:23,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:23,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-10-22 00:50:23,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1888542901] [2020-10-22 00:50:23,390 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:23,393 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:23,399 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 47 transitions. [2020-10-22 00:50:23,399 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:23,545 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:23,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:50:23,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:50:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:50:23,547 INFO L87 Difference]: Start difference. First operand 70 states and 136 transitions. Second operand 4 states. [2020-10-22 00:50:23,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:23,572 INFO L93 Difference]: Finished difference Result 125 states and 246 transitions. [2020-10-22 00:50:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:50:23,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-22 00:50:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:23,575 INFO L225 Difference]: With dead ends: 125 [2020-10-22 00:50:23,575 INFO L226 Difference]: Without dead ends: 125 [2020-10-22 00:50:23,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:50:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-22 00:50:23,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2020-10-22 00:50:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-22 00:50:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 202 transitions. [2020-10-22 00:50:23,586 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 202 transitions. Word has length 19 [2020-10-22 00:50:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:23,587 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 202 transitions. [2020-10-22 00:50:23,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:50:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 202 transitions. [2020-10-22 00:50:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 00:50:23,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:23,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:23,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-22 00:50:23,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1297837276, now seen corresponding path program 2 times [2020-10-22 00:50:23,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:23,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362760665] [2020-10-22 00:50:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-22 00:50:23,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362760665] [2020-10-22 00:50:23,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927405374] [2020-10-22 00:50:23,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:24,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 00:50:24,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:24,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 00:50:24,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-22 00:50:24,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:24,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-22 00:50:24,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1018894701] [2020-10-22 00:50:24,037 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:24,040 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:24,048 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2020-10-22 00:50:24,048 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:24,265 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [1036#(< thread_function_mutexThread1of1ForFork0_~i~0 20), 1037#(< thread_function_mutexThread1of1ForFork0_~i~0 19), 1038#(or (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= 20 thread_function_mutexThread1of1ForFork0_~i~0)), 1039#(or (<= 19 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 18))] [2020-10-22 00:50:24,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 00:50:24,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:24,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 00:50:24,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2020-10-22 00:50:24,267 INFO L87 Difference]: Start difference. First operand 103 states and 202 transitions. Second operand 9 states. [2020-10-22 00:50:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:24,357 INFO L93 Difference]: Finished difference Result 247 states and 490 transitions. [2020-10-22 00:50:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 00:50:24,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-22 00:50:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:24,360 INFO L225 Difference]: With dead ends: 247 [2020-10-22 00:50:24,360 INFO L226 Difference]: Without dead ends: 247 [2020-10-22 00:50:24,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2020-10-22 00:50:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-22 00:50:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2020-10-22 00:50:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-22 00:50:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 490 transitions. [2020-10-22 00:50:24,379 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 490 transitions. Word has length 22 [2020-10-22 00:50:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:24,380 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 490 transitions. [2020-10-22 00:50:24,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 00:50:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 490 transitions. [2020-10-22 00:50:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-22 00:50:24,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:24,383 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:24,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:24,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1421914536, now seen corresponding path program 3 times [2020-10-22 00:50:24,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:24,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85058895] [2020-10-22 00:50:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-22 00:50:24,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85058895] [2020-10-22 00:50:24,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084734762] [2020-10-22 00:50:24,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:24,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 00:50:24,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:24,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 00:50:24,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-22 00:50:24,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:24,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2020-10-22 00:50:24,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1996455348] [2020-10-22 00:50:24,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:24,851 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:24,872 INFO L252 McrAutomatonBuilder]: Finished intersection with 72 states and 104 transitions. [2020-10-22 00:50:24,872 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:25,348 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [1910#(< thread_function_mutexThread1of1ForFork0_~i~0 20), 1911#(< thread_function_mutexThread1of1ForFork0_~i~0 19), 1912#(or (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= 20 thread_function_mutexThread1of1ForFork0_~i~0)), 1913#(or (<= 19 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 18)), 1914#(or (<= 18 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 17)), 1915#(or (< thread_function_mutexThread1of1ForFork0_~i~0 16) (<= 17 thread_function_mutexThread1of1ForFork0_~i~0)), 1916#(or (<= 16 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 15)), 1917#(or (<= 15 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 14))] [2020-10-22 00:50:25,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-22 00:50:25,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:25,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-22 00:50:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-22 00:50:25,350 INFO L87 Difference]: Start difference. First operand 247 states and 490 transitions. Second operand 17 states. [2020-10-22 00:50:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:25,655 INFO L93 Difference]: Finished difference Result 535 states and 1066 transitions. [2020-10-22 00:50:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-22 00:50:25,656 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-10-22 00:50:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:25,659 INFO L225 Difference]: With dead ends: 535 [2020-10-22 00:50:25,659 INFO L226 Difference]: Without dead ends: 535 [2020-10-22 00:50:25,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=430, Unknown=0, NotChecked=0, Total=650 [2020-10-22 00:50:25,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-22 00:50:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2020-10-22 00:50:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-22 00:50:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1066 transitions. [2020-10-22 00:50:25,687 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1066 transitions. Word has length 38 [2020-10-22 00:50:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:25,688 INFO L481 AbstractCegarLoop]: Abstraction has 535 states and 1066 transitions. [2020-10-22 00:50:25,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-22 00:50:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1066 transitions. [2020-10-22 00:50:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-22 00:50:25,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:25,694 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:25,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:25,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:25,909 INFO L82 PathProgramCache]: Analyzing trace with hash 565834560, now seen corresponding path program 4 times [2020-10-22 00:50:25,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:25,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496613034] [2020-10-22 00:50:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-22 00:50:26,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496613034] [2020-10-22 00:50:26,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330105230] [2020-10-22 00:50:26,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:26,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 00:50:26,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:26,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-22 00:50:26,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-22 00:50:26,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:26,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-22 00:50:26,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [978353856] [2020-10-22 00:50:26,469 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:26,490 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:26,642 INFO L252 McrAutomatonBuilder]: Finished intersection with 136 states and 200 transitions. [2020-10-22 00:50:26,643 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:27,858 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 16 new interpolants: [3776#(or (<= 12 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 11)), 3777#(or (<= 11 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 10)), 3778#(or (< thread_function_mutexThread1of1ForFork0_~i~0 9) (<= 10 thread_function_mutexThread1of1ForFork0_~i~0)), 3779#(or (< thread_function_mutexThread1of1ForFork0_~i~0 8) (<= 9 thread_function_mutexThread1of1ForFork0_~i~0)), 3780#(or (< thread_function_mutexThread1of1ForFork0_~i~0 7) (<= 8 thread_function_mutexThread1of1ForFork0_~i~0)), 3781#(or (<= 7 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 6)), 3766#(< thread_function_mutexThread1of1ForFork0_~i~0 20), 3767#(< thread_function_mutexThread1of1ForFork0_~i~0 19), 3768#(or (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= 20 thread_function_mutexThread1of1ForFork0_~i~0)), 3769#(or (<= 19 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 18)), 3770#(or (<= 18 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 17)), 3771#(or (< thread_function_mutexThread1of1ForFork0_~i~0 16) (<= 17 thread_function_mutexThread1of1ForFork0_~i~0)), 3772#(or (<= 16 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 15)), 3773#(or (<= 15 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 14)), 3774#(or (<= 14 thread_function_mutexThread1of1ForFork0_~i~0) (< thread_function_mutexThread1of1ForFork0_~i~0 13)), 3775#(or (< thread_function_mutexThread1of1ForFork0_~i~0 12) (<= 13 thread_function_mutexThread1of1ForFork0_~i~0))] [2020-10-22 00:50:27,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-22 00:50:27,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:27,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-22 00:50:27,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=724, Unknown=0, NotChecked=0, Total=1122 [2020-10-22 00:50:27,861 INFO L87 Difference]: Start difference. First operand 535 states and 1066 transitions. Second operand 33 states. [2020-10-22 00:50:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:28,287 INFO L93 Difference]: Finished difference Result 751 states and 1498 transitions. [2020-10-22 00:50:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-22 00:50:28,287 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 70 [2020-10-22 00:50:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:28,292 INFO L225 Difference]: With dead ends: 751 [2020-10-22 00:50:28,292 INFO L226 Difference]: Without dead ends: 751 [2020-10-22 00:50:28,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=493, Invalid=913, Unknown=0, NotChecked=0, Total=1406 [2020-10-22 00:50:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-10-22 00:50:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2020-10-22 00:50:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-22 00:50:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1498 transitions. [2020-10-22 00:50:28,313 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1498 transitions. Word has length 70 [2020-10-22 00:50:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:28,313 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 1498 transitions. [2020-10-22 00:50:28,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-22 00:50:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1498 transitions. [2020-10-22 00:50:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-22 00:50:28,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:28,319 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:28,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:28,534 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash 499828082, now seen corresponding path program 5 times [2020-10-22 00:50:28,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:28,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900750695] [2020-10-22 00:50:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:28,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900750695] [2020-10-22 00:50:28,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319628697] [2020-10-22 00:50:28,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:28,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-10-22 00:50:28,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:28,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 00:50:28,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:28,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:28,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-22 00:50:28,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1403302753] [2020-10-22 00:50:28,964 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:29,010 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:29,604 INFO L252 McrAutomatonBuilder]: Finished intersection with 184 states and 272 transitions. [2020-10-22 00:50:29,604 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:30,214 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:30,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:50:30,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:30,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:50:30,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 00:50:30,216 INFO L87 Difference]: Start difference. First operand 751 states and 1498 transitions. Second operand 5 states. [2020-10-22 00:50:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:30,248 INFO L93 Difference]: Finished difference Result 1166 states and 2328 transitions. [2020-10-22 00:50:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:50:30,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-22 00:50:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:30,256 INFO L225 Difference]: With dead ends: 1166 [2020-10-22 00:50:30,256 INFO L226 Difference]: Without dead ends: 1166 [2020-10-22 00:50:30,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 00:50:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-10-22 00:50:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1000. [2020-10-22 00:50:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-22 00:50:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1996 transitions. [2020-10-22 00:50:30,282 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1996 transitions. Word has length 94 [2020-10-22 00:50:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:30,282 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1996 transitions. [2020-10-22 00:50:30,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:50:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1996 transitions. [2020-10-22 00:50:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-22 00:50:30,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:30,285 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:30,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-22 00:50:30,499 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash 59814964, now seen corresponding path program 6 times [2020-10-22 00:50:30,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:30,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883810263] [2020-10-22 00:50:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:30,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883810263] [2020-10-22 00:50:30,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439051674] [2020-10-22 00:50:30,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:30,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-22 00:50:30,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:30,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 00:50:30,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:30,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:30,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-22 00:50:30,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [147782814] [2020-10-22 00:50:30,831 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:30,900 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:31,720 INFO L252 McrAutomatonBuilder]: Finished intersection with 190 states and 281 transitions. [2020-10-22 00:50:31,721 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:32,344 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:32,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 00:50:32,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:32,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 00:50:32,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:50:32,345 INFO L87 Difference]: Start difference. First operand 1000 states and 1996 transitions. Second operand 6 states. [2020-10-22 00:50:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:32,384 INFO L93 Difference]: Finished difference Result 1415 states and 2826 transitions. [2020-10-22 00:50:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 00:50:32,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-22 00:50:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:32,393 INFO L225 Difference]: With dead ends: 1415 [2020-10-22 00:50:32,393 INFO L226 Difference]: Without dead ends: 1415 [2020-10-22 00:50:32,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:50:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2020-10-22 00:50:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1249. [2020-10-22 00:50:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2020-10-22 00:50:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2494 transitions. [2020-10-22 00:50:32,424 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2494 transitions. Word has length 97 [2020-10-22 00:50:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:32,424 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 2494 transitions. [2020-10-22 00:50:32,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 00:50:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2494 transitions. [2020-10-22 00:50:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-22 00:50:32,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:32,428 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:32,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:32,644 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:32,645 INFO L82 PathProgramCache]: Analyzing trace with hash -130795982, now seen corresponding path program 7 times [2020-10-22 00:50:32,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:32,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085051527] [2020-10-22 00:50:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:32,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085051527] [2020-10-22 00:50:32,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170354827] [2020-10-22 00:50:32,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:32,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-22 00:50:32,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:32,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:32,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-22 00:50:32,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [657565777] [2020-10-22 00:50:32,919 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:33,056 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:33,353 INFO L252 McrAutomatonBuilder]: Finished intersection with 196 states and 290 transitions. [2020-10-22 00:50:33,353 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:33,624 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-22 00:50:34,174 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:34,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 00:50:34,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:34,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 00:50:34,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-22 00:50:34,175 INFO L87 Difference]: Start difference. First operand 1249 states and 2494 transitions. Second operand 7 states. [2020-10-22 00:50:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:34,210 INFO L93 Difference]: Finished difference Result 1664 states and 3324 transitions. [2020-10-22 00:50:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:50:34,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-22 00:50:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:34,218 INFO L225 Difference]: With dead ends: 1664 [2020-10-22 00:50:34,219 INFO L226 Difference]: Without dead ends: 1664 [2020-10-22 00:50:34,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 189 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-22 00:50:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-10-22 00:50:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1498. [2020-10-22 00:50:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1498 states. [2020-10-22 00:50:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2992 transitions. [2020-10-22 00:50:34,256 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2992 transitions. Word has length 100 [2020-10-22 00:50:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:34,256 INFO L481 AbstractCegarLoop]: Abstraction has 1498 states and 2992 transitions. [2020-10-22 00:50:34,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 00:50:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2992 transitions. [2020-10-22 00:50:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-22 00:50:34,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:34,261 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:34,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:34,476 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:34,477 INFO L82 PathProgramCache]: Analyzing trace with hash -674722956, now seen corresponding path program 8 times [2020-10-22 00:50:34,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:34,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257777527] [2020-10-22 00:50:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:34,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257777527] [2020-10-22 00:50:34,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669161128] [2020-10-22 00:50:34,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:34,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 00:50:34,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:34,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 00:50:34,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:34,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:34,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-22 00:50:34,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [628731540] [2020-10-22 00:50:34,728 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:34,779 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:35,238 INFO L252 McrAutomatonBuilder]: Finished intersection with 202 states and 299 transitions. [2020-10-22 00:50:35,238 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:35,960 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:35,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 00:50:35,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:35,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 00:50:35,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-22 00:50:35,961 INFO L87 Difference]: Start difference. First operand 1498 states and 2992 transitions. Second operand 8 states. [2020-10-22 00:50:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:36,012 INFO L93 Difference]: Finished difference Result 1913 states and 3822 transitions. [2020-10-22 00:50:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 00:50:36,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-22 00:50:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:36,022 INFO L225 Difference]: With dead ends: 1913 [2020-10-22 00:50:36,023 INFO L226 Difference]: Without dead ends: 1913 [2020-10-22 00:50:36,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-22 00:50:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-10-22 00:50:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1747. [2020-10-22 00:50:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-10-22 00:50:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 3490 transitions. [2020-10-22 00:50:36,068 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 3490 transitions. Word has length 103 [2020-10-22 00:50:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:36,068 INFO L481 AbstractCegarLoop]: Abstraction has 1747 states and 3490 transitions. [2020-10-22 00:50:36,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 00:50:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 3490 transitions. [2020-10-22 00:50:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-22 00:50:36,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:36,076 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:36,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-22 00:50:36,292 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:36,292 INFO L82 PathProgramCache]: Analyzing trace with hash 108402418, now seen corresponding path program 9 times [2020-10-22 00:50:36,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:36,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173053877] [2020-10-22 00:50:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:36,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173053877] [2020-10-22 00:50:36,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365696071] [2020-10-22 00:50:36,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:36,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-22 00:50:36,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:36,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 00:50:36,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:36,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:36,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-22 00:50:36,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [766703013] [2020-10-22 00:50:36,590 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:36,624 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:37,358 INFO L252 McrAutomatonBuilder]: Finished intersection with 208 states and 308 transitions. [2020-10-22 00:50:37,358 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:38,169 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:38,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 00:50:38,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:38,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 00:50:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-22 00:50:38,171 INFO L87 Difference]: Start difference. First operand 1747 states and 3490 transitions. Second operand 9 states. [2020-10-22 00:50:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:38,233 INFO L93 Difference]: Finished difference Result 2162 states and 4320 transitions. [2020-10-22 00:50:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 00:50:38,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-22 00:50:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:38,246 INFO L225 Difference]: With dead ends: 2162 [2020-10-22 00:50:38,246 INFO L226 Difference]: Without dead ends: 2162 [2020-10-22 00:50:38,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 199 SyntacticMatches, 8 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-22 00:50:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2020-10-22 00:50:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 1996. [2020-10-22 00:50:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2020-10-22 00:50:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3988 transitions. [2020-10-22 00:50:38,313 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3988 transitions. Word has length 106 [2020-10-22 00:50:38,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:38,314 INFO L481 AbstractCegarLoop]: Abstraction has 1996 states and 3988 transitions. [2020-10-22 00:50:38,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 00:50:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3988 transitions. [2020-10-22 00:50:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-22 00:50:38,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:38,327 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:38,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:38,542 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:38,542 INFO L82 PathProgramCache]: Analyzing trace with hash -65932620, now seen corresponding path program 10 times [2020-10-22 00:50:38,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:38,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167131249] [2020-10-22 00:50:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:38,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167131249] [2020-10-22 00:50:38,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675463040] [2020-10-22 00:50:38,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:39,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 00:50:39,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:39,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 00:50:39,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-22 00:50:39,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1540499336] [2020-10-22 00:50:39,626 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:39,667 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:40,067 INFO L252 McrAutomatonBuilder]: Finished intersection with 214 states and 317 transitions. [2020-10-22 00:50:40,067 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:40,583 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-22 00:50:41,211 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:41,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 00:50:41,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:41,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 00:50:41,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-22 00:50:41,213 INFO L87 Difference]: Start difference. First operand 1996 states and 3988 transitions. Second operand 10 states. [2020-10-22 00:50:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:41,268 INFO L93 Difference]: Finished difference Result 2411 states and 4818 transitions. [2020-10-22 00:50:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 00:50:41,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-10-22 00:50:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:41,281 INFO L225 Difference]: With dead ends: 2411 [2020-10-22 00:50:41,282 INFO L226 Difference]: Without dead ends: 2411 [2020-10-22 00:50:41,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 204 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-22 00:50:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2020-10-22 00:50:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2245. [2020-10-22 00:50:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-10-22 00:50:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 4486 transitions. [2020-10-22 00:50:41,332 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 4486 transitions. Word has length 109 [2020-10-22 00:50:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:41,333 INFO L481 AbstractCegarLoop]: Abstraction has 2245 states and 4486 transitions. [2020-10-22 00:50:41,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 00:50:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 4486 transitions. [2020-10-22 00:50:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-22 00:50:41,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:41,339 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:41,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:41,552 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:41,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1065588814, now seen corresponding path program 11 times [2020-10-22 00:50:41,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:41,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673561398] [2020-10-22 00:50:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:41,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673561398] [2020-10-22 00:50:41,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999171156] [2020-10-22 00:50:41,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:42,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-10-22 00:50:42,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:42,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 00:50:42,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:42,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:42,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-22 00:50:42,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1143953099] [2020-10-22 00:50:42,123 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:42,189 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:43,283 INFO L252 McrAutomatonBuilder]: Finished intersection with 220 states and 326 transitions. [2020-10-22 00:50:43,284 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:44,125 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:44,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 00:50:44,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:44,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 00:50:44,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-22 00:50:44,126 INFO L87 Difference]: Start difference. First operand 2245 states and 4486 transitions. Second operand 11 states. [2020-10-22 00:50:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:44,181 INFO L93 Difference]: Finished difference Result 2660 states and 5316 transitions. [2020-10-22 00:50:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 00:50:44,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-10-22 00:50:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:44,194 INFO L225 Difference]: With dead ends: 2660 [2020-10-22 00:50:44,194 INFO L226 Difference]: Without dead ends: 2660 [2020-10-22 00:50:44,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 209 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-22 00:50:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2020-10-22 00:50:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2494. [2020-10-22 00:50:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2494 states. [2020-10-22 00:50:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 4984 transitions. [2020-10-22 00:50:44,253 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 4984 transitions. Word has length 112 [2020-10-22 00:50:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:44,254 INFO L481 AbstractCegarLoop]: Abstraction has 2494 states and 4984 transitions. [2020-10-22 00:50:44,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 00:50:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 4984 transitions. [2020-10-22 00:50:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-22 00:50:44,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:44,260 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:44,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-22 00:50:44,476 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -520033804, now seen corresponding path program 12 times [2020-10-22 00:50:44,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:44,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821331821] [2020-10-22 00:50:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:44,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821331821] [2020-10-22 00:50:44,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989826273] [2020-10-22 00:50:44,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:45,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-10-22 00:50:45,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:45,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-22 00:50:45,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:45,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:45,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-22 00:50:45,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1808228780] [2020-10-22 00:50:45,522 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:45,603 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:46,442 INFO L252 McrAutomatonBuilder]: Finished intersection with 226 states and 335 transitions. [2020-10-22 00:50:46,442 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:47,356 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:47,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 00:50:47,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:47,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 00:50:47,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-22 00:50:47,358 INFO L87 Difference]: Start difference. First operand 2494 states and 4984 transitions. Second operand 12 states. [2020-10-22 00:50:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:47,419 INFO L93 Difference]: Finished difference Result 2909 states and 5814 transitions. [2020-10-22 00:50:47,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 00:50:47,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-10-22 00:50:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:47,434 INFO L225 Difference]: With dead ends: 2909 [2020-10-22 00:50:47,435 INFO L226 Difference]: Without dead ends: 2909 [2020-10-22 00:50:47,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-22 00:50:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-10-22 00:50:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2743. [2020-10-22 00:50:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2743 states. [2020-10-22 00:50:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 5482 transitions. [2020-10-22 00:50:47,494 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 5482 transitions. Word has length 115 [2020-10-22 00:50:47,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:47,494 INFO L481 AbstractCegarLoop]: Abstraction has 2743 states and 5482 transitions. [2020-10-22 00:50:47,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 00:50:47,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 5482 transitions. [2020-10-22 00:50:47,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-22 00:50:47,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:47,501 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:47,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-22 00:50:47,716 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:47,717 INFO L82 PathProgramCache]: Analyzing trace with hash -46978958, now seen corresponding path program 13 times [2020-10-22 00:50:47,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:47,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515969323] [2020-10-22 00:50:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:47,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515969323] [2020-10-22 00:50:47,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619814012] [2020-10-22 00:50:47,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:47,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 00:50:47,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:48,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:48,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-22 00:50:48,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1602991098] [2020-10-22 00:50:48,022 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:48,091 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:48,811 INFO L252 McrAutomatonBuilder]: Finished intersection with 232 states and 344 transitions. [2020-10-22 00:50:48,811 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:49,742 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:49,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 00:50:49,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:49,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 00:50:49,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-22 00:50:49,743 INFO L87 Difference]: Start difference. First operand 2743 states and 5482 transitions. Second operand 13 states. [2020-10-22 00:50:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:49,819 INFO L93 Difference]: Finished difference Result 3158 states and 6312 transitions. [2020-10-22 00:50:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 00:50:49,819 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-22 00:50:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:49,833 INFO L225 Difference]: With dead ends: 3158 [2020-10-22 00:50:49,833 INFO L226 Difference]: Without dead ends: 3158 [2020-10-22 00:50:49,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 219 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-22 00:50:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2020-10-22 00:50:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2992. [2020-10-22 00:50:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2020-10-22 00:50:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 5980 transitions. [2020-10-22 00:50:49,890 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 5980 transitions. Word has length 118 [2020-10-22 00:50:49,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:49,891 INFO L481 AbstractCegarLoop]: Abstraction has 2992 states and 5980 transitions. [2020-10-22 00:50:49,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 00:50:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 5980 transitions. [2020-10-22 00:50:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-22 00:50:49,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:49,899 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:50,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-22 00:50:50,113 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 942240052, now seen corresponding path program 14 times [2020-10-22 00:50:50,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:50,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774661891] [2020-10-22 00:50:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:50,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774661891] [2020-10-22 00:50:50,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123733547] [2020-10-22 00:50:50,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:50,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 00:50:50,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:50,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 00:50:50,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:50,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:50,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-22 00:50:50,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1615725120] [2020-10-22 00:50:50,452 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:50,498 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:51,079 INFO L252 McrAutomatonBuilder]: Finished intersection with 238 states and 353 transitions. [2020-10-22 00:50:51,080 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:52,101 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:52,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-22 00:50:52,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-22 00:50:52,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-22 00:50:52,103 INFO L87 Difference]: Start difference. First operand 2992 states and 5980 transitions. Second operand 14 states. [2020-10-22 00:50:52,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:52,169 INFO L93 Difference]: Finished difference Result 3407 states and 6810 transitions. [2020-10-22 00:50:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-22 00:50:52,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 121 [2020-10-22 00:50:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:52,179 INFO L225 Difference]: With dead ends: 3407 [2020-10-22 00:50:52,179 INFO L226 Difference]: Without dead ends: 3407 [2020-10-22 00:50:52,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 224 SyntacticMatches, 13 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-22 00:50:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2020-10-22 00:50:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3241. [2020-10-22 00:50:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2020-10-22 00:50:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 6478 transitions. [2020-10-22 00:50:52,236 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 6478 transitions. Word has length 121 [2020-10-22 00:50:52,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:52,237 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 6478 transitions. [2020-10-22 00:50:52,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-22 00:50:52,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 6478 transitions. [2020-10-22 00:50:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-22 00:50:52,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:52,245 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:52,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:50:52,460 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1299818190, now seen corresponding path program 15 times [2020-10-22 00:50:52,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:52,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605034013] [2020-10-22 00:50:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:52,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605034013] [2020-10-22 00:50:52,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657084134] [2020-10-22 00:50:52,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:53,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-22 00:50:53,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:53,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-22 00:50:53,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:53,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:53,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-22 00:50:53,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2021302769] [2020-10-22 00:50:53,154 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:53,203 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:53,810 INFO L252 McrAutomatonBuilder]: Finished intersection with 244 states and 362 transitions. [2020-10-22 00:50:53,810 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:54,860 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:54,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-22 00:50:54,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:54,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-22 00:50:54,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-22 00:50:54,862 INFO L87 Difference]: Start difference. First operand 3241 states and 6478 transitions. Second operand 15 states. [2020-10-22 00:50:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:54,944 INFO L93 Difference]: Finished difference Result 3656 states and 7308 transitions. [2020-10-22 00:50:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 00:50:54,945 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 124 [2020-10-22 00:50:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:54,952 INFO L225 Difference]: With dead ends: 3656 [2020-10-22 00:50:54,952 INFO L226 Difference]: Without dead ends: 3656 [2020-10-22 00:50:54,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 229 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-22 00:50:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2020-10-22 00:50:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3490. [2020-10-22 00:50:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3490 states. [2020-10-22 00:50:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 6976 transitions. [2020-10-22 00:50:55,019 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 6976 transitions. Word has length 124 [2020-10-22 00:50:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:55,019 INFO L481 AbstractCegarLoop]: Abstraction has 3490 states and 6976 transitions. [2020-10-22 00:50:55,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-22 00:50:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 6976 transitions. [2020-10-22 00:50:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-22 00:50:55,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:55,030 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:55,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-22 00:50:55,245 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash 874481780, now seen corresponding path program 16 times [2020-10-22 00:50:55,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:55,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953713041] [2020-10-22 00:50:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:55,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953713041] [2020-10-22 00:50:55,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239167597] [2020-10-22 00:50:55,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:56,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 00:50:56,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:56,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-22 00:50:56,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:56,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:56,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-22 00:50:56,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [728645537] [2020-10-22 00:50:56,512 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:56,555 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:50:57,157 INFO L252 McrAutomatonBuilder]: Finished intersection with 250 states and 371 transitions. [2020-10-22 00:50:57,157 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:50:58,281 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:50:58,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-22 00:50:58,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:50:58,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-22 00:50:58,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-22 00:50:58,283 INFO L87 Difference]: Start difference. First operand 3490 states and 6976 transitions. Second operand 16 states. [2020-10-22 00:50:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:50:58,367 INFO L93 Difference]: Finished difference Result 3905 states and 7806 transitions. [2020-10-22 00:50:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-22 00:50:58,368 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 127 [2020-10-22 00:50:58,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:50:58,375 INFO L225 Difference]: With dead ends: 3905 [2020-10-22 00:50:58,375 INFO L226 Difference]: Without dead ends: 3905 [2020-10-22 00:50:58,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 234 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-22 00:50:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2020-10-22 00:50:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3739. [2020-10-22 00:50:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3739 states. [2020-10-22 00:50:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 7474 transitions. [2020-10-22 00:50:58,438 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 7474 transitions. Word has length 127 [2020-10-22 00:50:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:50:58,438 INFO L481 AbstractCegarLoop]: Abstraction has 3739 states and 7474 transitions. [2020-10-22 00:50:58,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-22 00:50:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 7474 transitions. [2020-10-22 00:50:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-22 00:50:58,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:50:58,447 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:50:58,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-22 00:50:58,660 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:50:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:50:58,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1251870222, now seen corresponding path program 17 times [2020-10-22 00:50:58,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:50:58,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387909923] [2020-10-22 00:50:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:50:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:50:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:58,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387909923] [2020-10-22 00:50:58,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708026725] [2020-10-22 00:50:58,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:50:59,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-10-22 00:50:59,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:50:59,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-22 00:50:59,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:50:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:50:59,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:50:59,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-22 00:50:59,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [508677794] [2020-10-22 00:50:59,452 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:50:59,521 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:51:00,300 INFO L252 McrAutomatonBuilder]: Finished intersection with 256 states and 380 transitions. [2020-10-22 00:51:00,300 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:51:01,446 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:51:01,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-22 00:51:01,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:51:01,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-22 00:51:01,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-22 00:51:01,448 INFO L87 Difference]: Start difference. First operand 3739 states and 7474 transitions. Second operand 17 states. [2020-10-22 00:51:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:51:01,537 INFO L93 Difference]: Finished difference Result 4154 states and 8304 transitions. [2020-10-22 00:51:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-22 00:51:01,538 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 130 [2020-10-22 00:51:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:51:01,545 INFO L225 Difference]: With dead ends: 4154 [2020-10-22 00:51:01,546 INFO L226 Difference]: Without dead ends: 4154 [2020-10-22 00:51:01,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 239 SyntacticMatches, 16 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-22 00:51:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2020-10-22 00:51:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 3988. [2020-10-22 00:51:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3988 states. [2020-10-22 00:51:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 7972 transitions. [2020-10-22 00:51:01,607 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 7972 transitions. Word has length 130 [2020-10-22 00:51:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:51:01,608 INFO L481 AbstractCegarLoop]: Abstraction has 3988 states and 7972 transitions. [2020-10-22 00:51:01,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-22 00:51:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 7972 transitions. [2020-10-22 00:51:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-22 00:51:01,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:51:01,616 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:51:01,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:51:01,830 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:51:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:51:01,831 INFO L82 PathProgramCache]: Analyzing trace with hash -931713100, now seen corresponding path program 18 times [2020-10-22 00:51:01,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:51:01,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476711283] [2020-10-22 00:51:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:51:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:51:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:02,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476711283] [2020-10-22 00:51:02,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367572958] [2020-10-22 00:51:02,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:51:02,577 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-10-22 00:51:02,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:51:02,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-22 00:51:02,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:51:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:02,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:51:02,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-22 00:51:02,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1903607113] [2020-10-22 00:51:02,618 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:51:02,663 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:51:03,350 INFO L252 McrAutomatonBuilder]: Finished intersection with 262 states and 389 transitions. [2020-10-22 00:51:03,351 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:51:04,569 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:51:04,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-22 00:51:04,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:51:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-22 00:51:04,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-22 00:51:04,571 INFO L87 Difference]: Start difference. First operand 3988 states and 7972 transitions. Second operand 18 states. [2020-10-22 00:51:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:51:04,677 INFO L93 Difference]: Finished difference Result 4403 states and 8802 transitions. [2020-10-22 00:51:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-22 00:51:04,678 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-10-22 00:51:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:51:04,685 INFO L225 Difference]: With dead ends: 4403 [2020-10-22 00:51:04,685 INFO L226 Difference]: Without dead ends: 4403 [2020-10-22 00:51:04,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 244 SyntacticMatches, 17 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-22 00:51:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4403 states. [2020-10-22 00:51:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4403 to 4237. [2020-10-22 00:51:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4237 states. [2020-10-22 00:51:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 8470 transitions. [2020-10-22 00:51:04,754 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 8470 transitions. Word has length 133 [2020-10-22 00:51:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:51:04,755 INFO L481 AbstractCegarLoop]: Abstraction has 4237 states and 8470 transitions. [2020-10-22 00:51:04,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-22 00:51:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 8470 transitions. [2020-10-22 00:51:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-22 00:51:04,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:51:04,763 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:51:04,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:51:04,980 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:51:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:51:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2041711282, now seen corresponding path program 19 times [2020-10-22 00:51:04,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:51:04,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523578459] [2020-10-22 00:51:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:51:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:51:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:05,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523578459] [2020-10-22 00:51:05,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550509718] [2020-10-22 00:51:05,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:51:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:51:05,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-22 00:51:05,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:51:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:05,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:51:05,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-22 00:51:05,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1772098113] [2020-10-22 00:51:05,537 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:51:05,597 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:51:06,330 INFO L252 McrAutomatonBuilder]: Finished intersection with 268 states and 398 transitions. [2020-10-22 00:51:06,330 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:51:07,622 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:51:07,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-22 00:51:07,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:51:07,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-22 00:51:07,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-22 00:51:07,623 INFO L87 Difference]: Start difference. First operand 4237 states and 8470 transitions. Second operand 19 states. [2020-10-22 00:51:07,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:51:07,714 INFO L93 Difference]: Finished difference Result 4652 states and 9300 transitions. [2020-10-22 00:51:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-22 00:51:07,714 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 136 [2020-10-22 00:51:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:51:07,718 INFO L225 Difference]: With dead ends: 4652 [2020-10-22 00:51:07,718 INFO L226 Difference]: Without dead ends: 4652 [2020-10-22 00:51:07,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 249 SyntacticMatches, 18 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-22 00:51:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2020-10-22 00:51:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4486. [2020-10-22 00:51:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2020-10-22 00:51:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 8968 transitions. [2020-10-22 00:51:07,769 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 8968 transitions. Word has length 136 [2020-10-22 00:51:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:51:07,770 INFO L481 AbstractCegarLoop]: Abstraction has 4486 states and 8968 transitions. [2020-10-22 00:51:07,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-22 00:51:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 8968 transitions. [2020-10-22 00:51:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-22 00:51:07,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:51:07,782 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:51:07,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:51:07,997 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:51:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:51:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -373004556, now seen corresponding path program 20 times [2020-10-22 00:51:07,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:51:07,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129076190] [2020-10-22 00:51:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:51:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:51:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:08,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129076190] [2020-10-22 00:51:08,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91783883] [2020-10-22 00:51:08,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:51:08,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 00:51:08,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:51:08,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-22 00:51:08,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:51:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:08,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:51:08,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-22 00:51:08,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1786879056] [2020-10-22 00:51:08,468 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:51:08,531 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:51:09,341 INFO L252 McrAutomatonBuilder]: Finished intersection with 274 states and 407 transitions. [2020-10-22 00:51:09,341 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:51:10,716 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:51:10,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-22 00:51:10,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:51:10,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-22 00:51:10,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-22 00:51:10,718 INFO L87 Difference]: Start difference. First operand 4486 states and 8968 transitions. Second operand 20 states. [2020-10-22 00:51:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:51:10,820 INFO L93 Difference]: Finished difference Result 4901 states and 9798 transitions. [2020-10-22 00:51:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 00:51:10,821 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2020-10-22 00:51:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:51:10,827 INFO L225 Difference]: With dead ends: 4901 [2020-10-22 00:51:10,827 INFO L226 Difference]: Without dead ends: 4901 [2020-10-22 00:51:10,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 254 SyntacticMatches, 19 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-22 00:51:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2020-10-22 00:51:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 4735. [2020-10-22 00:51:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4735 states. [2020-10-22 00:51:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 9466 transitions. [2020-10-22 00:51:10,900 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 9466 transitions. Word has length 139 [2020-10-22 00:51:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:51:10,901 INFO L481 AbstractCegarLoop]: Abstraction has 4735 states and 9466 transitions. [2020-10-22 00:51:10,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-22 00:51:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 9466 transitions. [2020-10-22 00:51:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-22 00:51:10,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:51:10,910 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:51:11,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-22 00:51:11,124 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:51:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:51:11,125 INFO L82 PathProgramCache]: Analyzing trace with hash -765293710, now seen corresponding path program 21 times [2020-10-22 00:51:11,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:51:11,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551755857] [2020-10-22 00:51:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:51:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:51:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:11,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551755857] [2020-10-22 00:51:11,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823317570] [2020-10-22 00:51:11,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:51:11,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-10-22 00:51:11,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:51:11,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-22 00:51:11,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:51:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:12,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:51:12,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-22 00:51:12,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [581867547] [2020-10-22 00:51:12,046 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:51:12,091 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:51:12,915 INFO L252 McrAutomatonBuilder]: Finished intersection with 280 states and 416 transitions. [2020-10-22 00:51:12,915 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:51:14,396 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:51:14,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-22 00:51:14,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:51:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-22 00:51:14,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-22 00:51:14,398 INFO L87 Difference]: Start difference. First operand 4735 states and 9466 transitions. Second operand 21 states. [2020-10-22 00:51:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:51:14,511 INFO L93 Difference]: Finished difference Result 5150 states and 10296 transitions. [2020-10-22 00:51:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-22 00:51:14,512 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 142 [2020-10-22 00:51:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:51:14,517 INFO L225 Difference]: With dead ends: 5150 [2020-10-22 00:51:14,517 INFO L226 Difference]: Without dead ends: 5150 [2020-10-22 00:51:14,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 259 SyntacticMatches, 20 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-22 00:51:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2020-10-22 00:51:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 4984. [2020-10-22 00:51:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-10-22 00:51:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 9964 transitions. [2020-10-22 00:51:14,589 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 9964 transitions. Word has length 142 [2020-10-22 00:51:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:51:14,590 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 9964 transitions. [2020-10-22 00:51:14,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-22 00:51:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 9964 transitions. [2020-10-22 00:51:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-22 00:51:14,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:51:14,600 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:51:14,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-22 00:51:14,815 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:51:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:51:14,815 INFO L82 PathProgramCache]: Analyzing trace with hash -845468108, now seen corresponding path program 22 times [2020-10-22 00:51:14,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:51:14,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447989247] [2020-10-22 00:51:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:51:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:51:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:15,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447989247] [2020-10-22 00:51:15,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268742657] [2020-10-22 00:51:15,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:51:17,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 00:51:17,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:51:17,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-22 00:51:17,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:51:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-22 00:51:17,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:51:17,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-22 00:51:17,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [274547396] [2020-10-22 00:51:17,235 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:51:17,278 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:51:18,218 INFO L252 McrAutomatonBuilder]: Finished intersection with 286 states and 425 transitions. [2020-10-22 00:51:18,218 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:51:19,704 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:51:19,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-22 00:51:19,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:51:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-22 00:51:19,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-22 00:51:19,705 INFO L87 Difference]: Start difference. First operand 4984 states and 9964 transitions. Second operand 22 states. [2020-10-22 00:51:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:51:19,829 INFO L93 Difference]: Finished difference Result 5233 states and 10462 transitions. [2020-10-22 00:51:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-22 00:51:19,829 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-22 00:51:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:51:19,837 INFO L225 Difference]: With dead ends: 5233 [2020-10-22 00:51:19,837 INFO L226 Difference]: Without dead ends: 5233 [2020-10-22 00:51:19,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 264 SyntacticMatches, 21 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-22 00:51:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2020-10-22 00:51:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 5233. [2020-10-22 00:51:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5233 states. [2020-10-22 00:51:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 10462 transitions. [2020-10-22 00:51:19,922 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 10462 transitions. Word has length 145 [2020-10-22 00:51:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:51:19,923 INFO L481 AbstractCegarLoop]: Abstraction has 5233 states and 10462 transitions. [2020-10-22 00:51:19,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-22 00:51:19,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 10462 transitions. [2020-10-22 00:51:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-22 00:51:19,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:51:19,936 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:51:20,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:51:20,151 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:51:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:51:20,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1319142350, now seen corresponding path program 23 times [2020-10-22 00:51:20,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:51:20,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746491467] [2020-10-22 00:51:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:51:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:51:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:51:23,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746491467] [2020-10-22 00:51:23,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050002396] [2020-10-22 00:51:23,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:51:23,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-10-22 00:51:23,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 00:51:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 123 conjunts are in the unsatisfiable core [2020-10-22 00:51:23,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:51:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:51:23,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:51:23,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-22 00:51:23,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [393773506] [2020-10-22 00:51:23,459 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:51:23,502 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:51:24,377 INFO L252 McrAutomatonBuilder]: Finished intersection with 292 states and 434 transitions. [2020-10-22 00:51:24,378 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:51:26,276 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:51:26,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-22 00:51:26,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:51:26,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-22 00:51:26,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-22 00:51:26,278 INFO L87 Difference]: Start difference. First operand 5233 states and 10462 transitions. Second operand 63 states. [2020-10-22 00:53:21,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:53:21,562 INFO L93 Difference]: Finished difference Result 370338 states and 740629 transitions. [2020-10-22 00:53:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 693 states. [2020-10-22 00:53:21,563 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-10-22 00:53:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:53:21,976 INFO L225 Difference]: With dead ends: 370338 [2020-10-22 00:53:21,977 INFO L226 Difference]: Without dead ends: 370336 [2020-10-22 00:53:22,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 286 SyntacticMatches, 4 SemanticMatches, 691 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198135 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=2643, Invalid=476913, Unknown=0, NotChecked=0, Total=479556 [2020-10-22 00:53:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370336 states. [2020-10-22 00:53:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370336 to 11740. [2020-10-22 00:53:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11740 states. [2020-10-22 00:53:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11740 states to 11740 states and 23673 transitions. [2020-10-22 00:53:23,959 INFO L78 Accepts]: Start accepts. Automaton has 11740 states and 23673 transitions. Word has length 148 [2020-10-22 00:53:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:53:23,959 INFO L481 AbstractCegarLoop]: Abstraction has 11740 states and 23673 transitions. [2020-10-22 00:53:23,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-22 00:53:23,959 INFO L276 IsEmpty]: Start isEmpty. Operand 11740 states and 23673 transitions. [2020-10-22 00:53:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-22 00:53:23,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:53:23,978 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:53:24,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-22 00:53:24,179 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:53:24,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:53:24,180 INFO L82 PathProgramCache]: Analyzing trace with hash 916527342, now seen corresponding path program 24 times [2020-10-22 00:53:24,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:53:24,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654328997] [2020-10-22 00:53:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:53:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:53:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 1273 trivial. 0 not checked. [2020-10-22 00:53:24,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654328997] [2020-10-22 00:53:24,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:53:24,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:53:24,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1424745819] [2020-10-22 00:53:24,254 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:53:24,324 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:53:25,268 INFO L252 McrAutomatonBuilder]: Finished intersection with 288 states and 426 transitions. [2020-10-22 00:53:25,268 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:53:25,527 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [579405#(not (= (select (select |#pthreadsMutex| |~#mymutex~0.base|) |~#mymutex~0.offset|) 0))] [2020-10-22 00:53:25,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:53:25,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:53:25,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:53:25,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:53:25,528 INFO L87 Difference]: Start difference. First operand 11740 states and 23673 transitions. Second operand 4 states. [2020-10-22 00:53:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:53:25,552 INFO L93 Difference]: Finished difference Result 2905 states and 3722 transitions. [2020-10-22 00:53:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:53:25,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-22 00:53:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:53:25,556 INFO L225 Difference]: With dead ends: 2905 [2020-10-22 00:53:25,556 INFO L226 Difference]: Without dead ends: 2905 [2020-10-22 00:53:25,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:53:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-10-22 00:53:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2905. [2020-10-22 00:53:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2905 states. [2020-10-22 00:53:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3722 transitions. [2020-10-22 00:53:25,583 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3722 transitions. Word has length 148 [2020-10-22 00:53:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:53:25,583 INFO L481 AbstractCegarLoop]: Abstraction has 2905 states and 3722 transitions. [2020-10-22 00:53:25,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:53:25,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3722 transitions. [2020-10-22 00:53:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-22 00:53:25,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:53:25,587 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:53:25,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-22 00:53:25,587 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:53:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:53:25,587 INFO L82 PathProgramCache]: Analyzing trace with hash 464144836, now seen corresponding path program 25 times [2020-10-22 00:53:25,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:53:25,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812995957] [2020-10-22 00:53:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:53:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:53:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:53:28,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812995957] [2020-10-22 00:53:28,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286634001] [2020-10-22 00:53:28,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-22 00:53:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:53:29,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 123 conjunts are in the unsatisfiable core [2020-10-22 00:53:29,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 00:53:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:53:29,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 00:53:29,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-22 00:53:29,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1395075582] [2020-10-22 00:53:29,170 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:53:29,216 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:53:29,918 INFO L252 McrAutomatonBuilder]: Finished intersection with 231 states and 312 transitions. [2020-10-22 00:53:29,918 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:53:30,820 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:53:30,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-22 00:53:30,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:53:30,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-22 00:53:30,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-22 00:53:30,822 INFO L87 Difference]: Start difference. First operand 2905 states and 3722 transitions. Second operand 63 states. Received shutdown request... [2020-10-22 00:54:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2020-10-22 00:54:08,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 00:54:08,171 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-22 00:54:08,176 WARN L235 ceAbstractionStarter]: Timeout [2020-10-22 00:54:08,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:54:08 BasicIcfg [2020-10-22 00:54:08,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:54:08,178 INFO L168 Benchmark]: Toolchain (without parser) took 231619.91 ms. Allocated memory was 137.4 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 97.8 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-22 00:54:08,178 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 00:54:08,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 952.05 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 96.9 MB in the beginning and 103.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-10-22 00:54:08,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.21 ms. Allocated memory is still 201.3 MB. Free memory was 103.6 MB in the beginning and 101.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-22 00:54:08,179 INFO L168 Benchmark]: Boogie Preprocessor took 31.67 ms. Allocated memory is still 201.3 MB. Free memory was 101.4 MB in the beginning and 99.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-22 00:54:08,180 INFO L168 Benchmark]: RCFGBuilder took 510.90 ms. Allocated memory was 201.3 MB in the beginning and 230.2 MB in the end (delta: 28.8 MB). Free memory was 99.2 MB in the beginning and 189.1 MB in the end (delta: -89.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:54:08,180 INFO L168 Benchmark]: TraceAbstraction took 230047.79 ms. Allocated memory was 230.2 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 189.1 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-22 00:54:08,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 952.05 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 96.9 MB in the beginning and 103.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.21 ms. Allocated memory is still 201.3 MB. Free memory was 103.6 MB in the beginning and 101.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.67 ms. Allocated memory is still 201.3 MB. Free memory was 101.4 MB in the beginning and 99.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 510.90 ms. Allocated memory was 201.3 MB in the beginning and 230.2 MB in the end (delta: 28.8 MB). Free memory was 99.2 MB in the beginning and 189.1 MB in the end (delta: -89.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230047.79 ms. Allocated memory was 230.2 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 189.1 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 323 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 22 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 86 PlacesBefore, 19 PlacesAfterwards, 90 TransitionsBefore, 17 TransitionsAfterwards, 646 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 898 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (2905states) and FLOYD_HOARE automaton (currently 295 states, 63 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 332 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 229.9s, OverallIterations: 27, TraceHistogramMax: 20, AutomataDifference: 155.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 4761 SDtfs, 8216 SDslu, 254733 SDs, 0 SdLazy, 153016 SolverSat, 1675 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6483 GetRequests, 4896 SyntacticMatches, 260 SemanticMatches, 1326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237122 ImplicationChecksByTransitivity, 60.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11740occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 361462 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 8.2s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 5364 NumberOfCodeBlocks, 5188 NumberOfCodeBlocksAsserted, 221 NumberOfCheckSat, 5313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1462305 SizeOfPredicates, 102 NumberOfNonLiveVariables, 9512 ConjunctsInSsa, 499 ConjunctsInUnsatCore, 51 InterpolantComputations, 3 PerfectInterpolantSequences, 29554/43098 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