/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-7a177ad [2020-11-09 15:53:00,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:53:00,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:53:00,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:53:00,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:53:00,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:53:00,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:53:00,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:53:00,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:53:00,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:53:00,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:53:00,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:53:00,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:53:00,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:53:00,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:53:00,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:53:00,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:53:00,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:53:00,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:53:00,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:53:00,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:53:00,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:53:00,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:53:00,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:53:00,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:53:00,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:53:00,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:53:00,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:53:00,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:53:00,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:53:00,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:53:00,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:53:00,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:53:00,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:53:00,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:53:00,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:53:00,663 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 [2020-11-09 15:53:00,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:53:00,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:53:00,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:53:00,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:53:00,725 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:53:00,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:53:00,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:53:00,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:53:00,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:53:00,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:53:00,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:53:00,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:53:00,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:53:00,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:53:00,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:53:00,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:53:00,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:53:00,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:53:00,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:53:00,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:53:00,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:53:00,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:53:00,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:53:00,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:53:00,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:53:00,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:53:00,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:53:00,732 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:53:00,732 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:53:00,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:53:00,732 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:53:01,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:53:01,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:53:01,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:53:01,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:53:01,228 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:53:01,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-11-09 15:53:01,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051029e1b/0cd7666bc91947b4a57dd1d0e9ba5c2d/FLAGab66aa437 [2020-11-09 15:53:02,073 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:53:02,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-11-09 15:53:02,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051029e1b/0cd7666bc91947b4a57dd1d0e9ba5c2d/FLAGab66aa437 [2020-11-09 15:53:02,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051029e1b/0cd7666bc91947b4a57dd1d0e9ba5c2d [2020-11-09 15:53:02,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:53:02,310 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:53:02,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:53:02,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:53:02,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:53:02,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:53:02" (1/1) ... [2020-11-09 15:53:02,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ca2f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:02, skipping insertion in model container [2020-11-09 15:53:02,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:53:02" (1/1) ... [2020-11-09 15:53:02,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:53:02,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:53:03,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:53:03,511 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:53:03,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:53:03,954 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:53:03,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03 WrapperNode [2020-11-09 15:53:03,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:53:03,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:53:03,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:53:03,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:53:03,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:03,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:53:04,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:53:04,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:53:04,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:53:04,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (1/1) ... [2020-11-09 15:53:04,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:53:04,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:53:04,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:53:04,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:53:04,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (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 [2020-11-09 15:53:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:53:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:53:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-09 15:53:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:53:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-09 15:53:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2020-11-09 15:53:04,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2020-11-09 15:53:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:53:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:53:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:53:04,142 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:53:04,682 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:53:04,682 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:53:04,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:53:04 BoogieIcfgContainer [2020-11-09 15:53:04,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:53:04,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:53:04,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:53:04,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:53:04,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:53:02" (1/3) ... [2020-11-09 15:53:04,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c63ec05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:53:04, skipping insertion in model container [2020-11-09 15:53:04,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:53:03" (2/3) ... [2020-11-09 15:53:04,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c63ec05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:53:04, skipping insertion in model container [2020-11-09 15:53:04,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:53:04" (3/3) ... [2020-11-09 15:53:04,696 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2020-11-09 15:53:04,713 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:53:04,714 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:53:04,718 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:53:04,719 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:53:04,753 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,753 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,754 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,754 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,755 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,755 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,755 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,755 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,755 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,755 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,756 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,756 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,756 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,756 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,757 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,757 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,757 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,757 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,757 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,758 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,758 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,758 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,759 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,760 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,760 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,760 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,760 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,761 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,761 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,761 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,761 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,762 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,762 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,762 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,762 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,763 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,763 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,763 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,763 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,766 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,766 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,766 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,767 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,767 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,767 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,767 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,767 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,768 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:53:04,777 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-09 15:53:04,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 15:53:04,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:53:04,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:53:04,814 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:53:04,814 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:53:04,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:53:04,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:53:04,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:53:04,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:53:04,828 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:53:04,829 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 188 flow [2020-11-09 15:53:04,832 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 188 flow [2020-11-09 15:53:04,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 188 flow [2020-11-09 15:53:04,920 INFO L129 PetriNetUnfolder]: 8/89 cut-off events. [2020-11-09 15:53:04,920 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-09 15:53:04,926 INFO L84 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. [2020-11-09 15:53:04,932 INFO L116 LiptonReduction]: Number of co-enabled transitions 646 [2020-11-09 15:53:07,492 WARN L194 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-09 15:53:07,664 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-09 15:53:07,840 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-09 15:53:08,000 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-09 15:53:09,170 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-11-09 15:53:09,341 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-09 15:53:09,708 WARN L194 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-11-09 15:53:09,884 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-09 15:53:10,211 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-09 15:53:10,453 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-09 15:53:11,739 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2020-11-09 15:53:12,274 WARN L194 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-09 15:53:13,541 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2020-11-09 15:53:14,100 WARN L194 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-09 15:53:14,113 INFO L131 LiptonReduction]: Checked pairs total: 898 [2020-11-09 15:53:14,114 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-11-09 15:53:14,122 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 17 transitions, 42 flow [2020-11-09 15:53:14,131 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 35 states. [2020-11-09 15:53:14,133 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-09 15:53:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:53:14,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:14,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:14,141 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:14,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1995633590, now seen corresponding path program 1 times [2020-11-09 15:53:14,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:14,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212260595] [2020-11-09 15:53:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:53:14,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212260595] [2020-11-09 15:53:14,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:53:14,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:53:14,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [175423874] [2020-11-09 15:53:14,430 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:14,438 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:14,458 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-11-09 15:53:14,458 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:14,503 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [162#(< thread_function_mutexThread1of1ForFork0_~i~0 20)] [2020-11-09 15:53:14,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:53:14,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:14,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:53:14,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:53:14,524 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-11-09 15:53:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:14,558 INFO L93 Difference]: Finished difference Result 59 states and 114 transitions. [2020-11-09 15:53:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:53:14,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 15:53:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:14,589 INFO L225 Difference]: With dead ends: 59 [2020-11-09 15:53:14,590 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 15:53:14,591 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 [2020-11-09 15:53:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 15:53:14,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-09 15:53:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-09 15:53:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-11-09 15:53:14,632 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 8 [2020-11-09 15:53:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:14,632 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-11-09 15:53:14,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:53:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-11-09 15:53:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 15:53:14,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:14,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:14,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:53:14,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:14,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1403175836, now seen corresponding path program 1 times [2020-11-09 15:53:14,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:14,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217155269] [2020-11-09 15:53:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-09 15:53:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217155269] [2020-11-09 15:53:14,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:53:14,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:53:14,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [320952641] [2020-11-09 15:53:14,734 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:14,736 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:14,743 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 56 transitions. [2020-11-09 15:53:14,744 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:14,849 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:14,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:53:14,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:14,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:53:14,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:53:14,852 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 3 states. [2020-11-09 15:53:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:14,879 INFO L93 Difference]: Finished difference Result 92 states and 180 transitions. [2020-11-09 15:53:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:53:14,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-09 15:53:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:14,882 INFO L225 Difference]: With dead ends: 92 [2020-11-09 15:53:14,882 INFO L226 Difference]: Without dead ends: 92 [2020-11-09 15:53:14,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 10 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:53:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-09 15:53:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-11-09 15:53:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-09 15:53:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 136 transitions. [2020-11-09 15:53:14,904 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 136 transitions. Word has length 16 [2020-11-09 15:53:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:14,905 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 136 transitions. [2020-11-09 15:53:14,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:53:14,905 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 136 transitions. [2020-11-09 15:53:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 15:53:14,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:14,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:14,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:53:14,911 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash -572322358, now seen corresponding path program 1 times [2020-11-09 15:53:14,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:14,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859195608] [2020-11-09 15:53:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-09 15:53:15,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859195608] [2020-11-09 15:53:15,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924984563] [2020-11-09 15:53:15,082 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 [2020-11-09 15:53:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:53:15,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 15:53:15,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:15,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-11-09 15:53:15,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1590417348] [2020-11-09 15:53:15,244 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:15,248 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:15,254 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 47 transitions. [2020-11-09 15:53:15,255 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:15,308 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:15,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:53:15,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:53:15,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:53:15,310 INFO L87 Difference]: Start difference. First operand 70 states and 136 transitions. Second operand 4 states. [2020-11-09 15:53:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:15,364 INFO L93 Difference]: Finished difference Result 125 states and 246 transitions. [2020-11-09 15:53:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:53:15,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-09 15:53:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:15,367 INFO L225 Difference]: With dead ends: 125 [2020-11-09 15:53:15,367 INFO L226 Difference]: Without dead ends: 125 [2020-11-09 15:53:15,368 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 [2020-11-09 15:53:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-09 15:53:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2020-11-09 15:53:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-09 15:53:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 202 transitions. [2020-11-09 15:53:15,381 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 202 transitions. Word has length 19 [2020-11-09 15:53:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:15,381 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 202 transitions. [2020-11-09 15:53:15,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:53:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 202 transitions. [2020-11-09 15:53:15,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-09 15:53:15,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:15,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:15,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-09 15:53:15,597 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:15,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1297837276, now seen corresponding path program 2 times [2020-11-09 15:53:15,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:15,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765797744] [2020-11-09 15:53:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-09 15:53:15,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765797744] [2020-11-09 15:53:15,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315548029] [2020-11-09 15:53:15,688 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 [2020-11-09 15:53:15,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 15:53:15,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:15,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:53:15,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-09 15:53:15,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:15,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 15:53:15,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [247545411] [2020-11-09 15:53:15,845 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:15,850 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:15,862 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2020-11-09 15:53:15,862 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:16,012 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))] [2020-11-09 15:53:16,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 15:53:16,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:16,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 15:53:16,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:53:16,015 INFO L87 Difference]: Start difference. First operand 103 states and 202 transitions. Second operand 9 states. [2020-11-09 15:53:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:16,158 INFO L93 Difference]: Finished difference Result 247 states and 490 transitions. [2020-11-09 15:53:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 15:53:16,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-11-09 15:53:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:16,169 INFO L225 Difference]: With dead ends: 247 [2020-11-09 15:53:16,169 INFO L226 Difference]: Without dead ends: 247 [2020-11-09 15:53:16,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2020-11-09 15:53:16,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-11-09 15:53:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2020-11-09 15:53:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-11-09 15:53:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 490 transitions. [2020-11-09 15:53:16,201 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 490 transitions. Word has length 22 [2020-11-09 15:53:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:16,201 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 490 transitions. [2020-11-09 15:53:16,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 15:53:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 490 transitions. [2020-11-09 15:53:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-09 15:53:16,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:16,205 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:16,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:16,419 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:16,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1421914536, now seen corresponding path program 3 times [2020-11-09 15:53:16,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:16,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170247786] [2020-11-09 15:53:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-09 15:53:16,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170247786] [2020-11-09 15:53:16,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842982587] [2020-11-09 15:53:16,672 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 [2020-11-09 15:53:16,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-09 15:53:16,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:16,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:53:16,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-11-09 15:53:16,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:16,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2020-11-09 15:53:16,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [624445446] [2020-11-09 15:53:16,884 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:16,897 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:16,927 INFO L252 McrAutomatonBuilder]: Finished intersection with 72 states and 104 transitions. [2020-11-09 15:53:16,927 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:17,388 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))] [2020-11-09 15:53:17,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-09 15:53:17,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:17,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-09 15:53:17,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-11-09 15:53:17,390 INFO L87 Difference]: Start difference. First operand 247 states and 490 transitions. Second operand 17 states. [2020-11-09 15:53:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:17,827 INFO L93 Difference]: Finished difference Result 535 states and 1066 transitions. [2020-11-09 15:53:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 15:53:17,828 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-11-09 15:53:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:17,832 INFO L225 Difference]: With dead ends: 535 [2020-11-09 15:53:17,833 INFO L226 Difference]: Without dead ends: 535 [2020-11-09 15:53:17,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=430, Unknown=0, NotChecked=0, Total=650 [2020-11-09 15:53:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-11-09 15:53:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2020-11-09 15:53:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-11-09 15:53:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1066 transitions. [2020-11-09 15:53:17,895 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1066 transitions. Word has length 38 [2020-11-09 15:53:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:17,897 INFO L481 AbstractCegarLoop]: Abstraction has 535 states and 1066 transitions. [2020-11-09 15:53:17,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-09 15:53:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1066 transitions. [2020-11-09 15:53:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-09 15:53:17,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:17,913 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:18,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:18,114 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash 565834560, now seen corresponding path program 4 times [2020-11-09 15:53:18,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:18,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886675942] [2020-11-09 15:53:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-09 15:53:18,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886675942] [2020-11-09 15:53:18,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483509136] [2020-11-09 15:53:18,475 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 [2020-11-09 15:53:18,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 15:53:18,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:18,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-09 15:53:18,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-09 15:53:18,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:18,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-09 15:53:18,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1100808648] [2020-11-09 15:53:18,760 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:18,799 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:18,999 INFO L252 McrAutomatonBuilder]: Finished intersection with 136 states and 200 transitions. [2020-11-09 15:53:18,999 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:20,261 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))] [2020-11-09 15:53:20,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-09 15:53:20,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:20,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-09 15:53:20,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=724, Unknown=0, NotChecked=0, Total=1122 [2020-11-09 15:53:20,263 INFO L87 Difference]: Start difference. First operand 535 states and 1066 transitions. Second operand 33 states. [2020-11-09 15:53:20,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:20,780 INFO L93 Difference]: Finished difference Result 751 states and 1498 transitions. [2020-11-09 15:53:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 15:53:20,781 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 70 [2020-11-09 15:53:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:20,788 INFO L225 Difference]: With dead ends: 751 [2020-11-09 15:53:20,788 INFO L226 Difference]: Without dead ends: 751 [2020-11-09 15:53:20,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=493, Invalid=913, Unknown=0, NotChecked=0, Total=1406 [2020-11-09 15:53:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-11-09 15:53:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2020-11-09 15:53:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-11-09 15:53:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1498 transitions. [2020-11-09 15:53:20,818 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1498 transitions. Word has length 70 [2020-11-09 15:53:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:20,819 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 1498 transitions. [2020-11-09 15:53:20,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-09 15:53:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1498 transitions. [2020-11-09 15:53:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-09 15:53:20,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:20,822 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:21,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:21,037 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash 499828082, now seen corresponding path program 5 times [2020-11-09 15:53:21,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:21,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906290210] [2020-11-09 15:53:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:21,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906290210] [2020-11-09 15:53:21,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935336398] [2020-11-09 15:53:21,220 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 [2020-11-09 15:53:21,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-11-09 15:53:21,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:21,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 15:53:21,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:21,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:21,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 15:53:21,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [136770670] [2020-11-09 15:53:21,457 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:21,526 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:21,838 INFO L252 McrAutomatonBuilder]: Finished intersection with 184 states and 272 transitions. [2020-11-09 15:53:21,838 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:22,043 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:22,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:53:22,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:22,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:53:22,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:53:22,045 INFO L87 Difference]: Start difference. First operand 751 states and 1498 transitions. Second operand 5 states. [2020-11-09 15:53:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:22,094 INFO L93 Difference]: Finished difference Result 1166 states and 2328 transitions. [2020-11-09 15:53:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:53:22,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-11-09 15:53:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:22,107 INFO L225 Difference]: With dead ends: 1166 [2020-11-09 15:53:22,107 INFO L226 Difference]: Without dead ends: 1166 [2020-11-09 15:53:22,108 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 [2020-11-09 15:53:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-11-09 15:53:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1000. [2020-11-09 15:53:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-11-09 15:53:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1996 transitions. [2020-11-09 15:53:22,144 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1996 transitions. Word has length 94 [2020-11-09 15:53:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:22,147 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1996 transitions. [2020-11-09 15:53:22,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:53:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1996 transitions. [2020-11-09 15:53:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-09 15:53:22,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:22,151 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:22,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-09 15:53:22,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:22,366 INFO L82 PathProgramCache]: Analyzing trace with hash 59814964, now seen corresponding path program 6 times [2020-11-09 15:53:22,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:22,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228260201] [2020-11-09 15:53:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:22,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228260201] [2020-11-09 15:53:22,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282059351] [2020-11-09 15:53:22,563 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 [2020-11-09 15:53:22,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-09 15:53:22,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:22,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-09 15:53:22,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:22,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:22,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 15:53:22,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [210580936] [2020-11-09 15:53:22,760 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:22,835 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:23,206 INFO L252 McrAutomatonBuilder]: Finished intersection with 190 states and 281 transitions. [2020-11-09 15:53:23,206 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:23,590 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:23,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 15:53:23,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:23,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 15:53:23,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:53:23,592 INFO L87 Difference]: Start difference. First operand 1000 states and 1996 transitions. Second operand 6 states. [2020-11-09 15:53:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:23,659 INFO L93 Difference]: Finished difference Result 1415 states and 2826 transitions. [2020-11-09 15:53:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:53:23,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-11-09 15:53:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:23,670 INFO L225 Difference]: With dead ends: 1415 [2020-11-09 15:53:23,670 INFO L226 Difference]: Without dead ends: 1415 [2020-11-09 15:53:23,671 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 [2020-11-09 15:53:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2020-11-09 15:53:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1249. [2020-11-09 15:53:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2020-11-09 15:53:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2494 transitions. [2020-11-09 15:53:23,711 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2494 transitions. Word has length 97 [2020-11-09 15:53:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:23,712 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 2494 transitions. [2020-11-09 15:53:23,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 15:53:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2494 transitions. [2020-11-09 15:53:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-09 15:53:23,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:23,719 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:23,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:23,933 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:23,934 INFO L82 PathProgramCache]: Analyzing trace with hash -130795982, now seen corresponding path program 7 times [2020-11-09 15:53:23,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:23,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924172303] [2020-11-09 15:53:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:24,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924172303] [2020-11-09 15:53:24,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411379268] [2020-11-09 15:53:24,108 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 [2020-11-09 15:53:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:24,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-09 15:53:24,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:24,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:24,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 15:53:24,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1321631083] [2020-11-09 15:53:24,331 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:24,387 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:24,731 INFO L252 McrAutomatonBuilder]: Finished intersection with 196 states and 290 transitions. [2020-11-09 15:53:24,731 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:24,957 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:24,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:53:24,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:53:24,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:53:24,959 INFO L87 Difference]: Start difference. First operand 1249 states and 2494 transitions. Second operand 7 states. [2020-11-09 15:53:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:25,005 INFO L93 Difference]: Finished difference Result 1664 states and 3324 transitions. [2020-11-09 15:53:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:53:25,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-11-09 15:53:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:25,016 INFO L225 Difference]: With dead ends: 1664 [2020-11-09 15:53:25,016 INFO L226 Difference]: Without dead ends: 1664 [2020-11-09 15:53:25,016 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 [2020-11-09 15:53:25,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-11-09 15:53:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1498. [2020-11-09 15:53:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1498 states. [2020-11-09 15:53:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2992 transitions. [2020-11-09 15:53:25,063 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2992 transitions. Word has length 100 [2020-11-09 15:53:25,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:25,063 INFO L481 AbstractCegarLoop]: Abstraction has 1498 states and 2992 transitions. [2020-11-09 15:53:25,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:53:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2992 transitions. [2020-11-09 15:53:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-09 15:53:25,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:25,068 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:25,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:25,283 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:25,285 INFO L82 PathProgramCache]: Analyzing trace with hash -674722956, now seen corresponding path program 8 times [2020-11-09 15:53:25,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:25,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125022342] [2020-11-09 15:53:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:25,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125022342] [2020-11-09 15:53:25,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233221509] [2020-11-09 15:53:25,476 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 [2020-11-09 15:53:25,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 15:53:25,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:25,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 15:53:25,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:25,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:25,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 15:53:25,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [844631536] [2020-11-09 15:53:25,684 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:25,771 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:26,091 INFO L252 McrAutomatonBuilder]: Finished intersection with 202 states and 299 transitions. [2020-11-09 15:53:26,091 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:26,329 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:26,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 15:53:26,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:26,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 15:53:26,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-09 15:53:26,331 INFO L87 Difference]: Start difference. First operand 1498 states and 2992 transitions. Second operand 8 states. [2020-11-09 15:53:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:26,421 INFO L93 Difference]: Finished difference Result 1913 states and 3822 transitions. [2020-11-09 15:53:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 15:53:26,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-11-09 15:53:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:26,432 INFO L225 Difference]: With dead ends: 1913 [2020-11-09 15:53:26,432 INFO L226 Difference]: Without dead ends: 1913 [2020-11-09 15:53:26,433 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 [2020-11-09 15:53:26,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-11-09 15:53:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1747. [2020-11-09 15:53:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-11-09 15:53:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 3490 transitions. [2020-11-09 15:53:26,482 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 3490 transitions. Word has length 103 [2020-11-09 15:53:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:26,483 INFO L481 AbstractCegarLoop]: Abstraction has 1747 states and 3490 transitions. [2020-11-09 15:53:26,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 15:53:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 3490 transitions. [2020-11-09 15:53:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-09 15:53:26,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:26,488 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:26,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-09 15:53:26,702 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:26,703 INFO L82 PathProgramCache]: Analyzing trace with hash 108402418, now seen corresponding path program 9 times [2020-11-09 15:53:26,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:26,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239742354] [2020-11-09 15:53:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:26,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239742354] [2020-11-09 15:53:26,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859037663] [2020-11-09 15:53:26,982 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 [2020-11-09 15:53:27,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-09 15:53:27,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:27,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 15:53:27,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:27,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:27,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 15:53:27,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1058349994] [2020-11-09 15:53:27,210 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:27,279 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:27,814 INFO L252 McrAutomatonBuilder]: Finished intersection with 208 states and 308 transitions. [2020-11-09 15:53:27,814 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:28,050 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:28,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 15:53:28,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:28,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 15:53:28,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:53:28,051 INFO L87 Difference]: Start difference. First operand 1747 states and 3490 transitions. Second operand 9 states. [2020-11-09 15:53:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:28,115 INFO L93 Difference]: Finished difference Result 2162 states and 4320 transitions. [2020-11-09 15:53:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 15:53:28,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-11-09 15:53:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:28,126 INFO L225 Difference]: With dead ends: 2162 [2020-11-09 15:53:28,127 INFO L226 Difference]: Without dead ends: 2162 [2020-11-09 15:53:28,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 199 SyntacticMatches, 8 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:53:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2020-11-09 15:53:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 1996. [2020-11-09 15:53:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2020-11-09 15:53:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3988 transitions. [2020-11-09 15:53:28,258 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3988 transitions. Word has length 106 [2020-11-09 15:53:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:28,259 INFO L481 AbstractCegarLoop]: Abstraction has 1996 states and 3988 transitions. [2020-11-09 15:53:28,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 15:53:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3988 transitions. [2020-11-09 15:53:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-09 15:53:28,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:28,265 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:28,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:28,480 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:28,483 INFO L82 PathProgramCache]: Analyzing trace with hash -65932620, now seen corresponding path program 10 times [2020-11-09 15:53:28,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:28,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947750247] [2020-11-09 15:53:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:28,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947750247] [2020-11-09 15:53:28,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632026225] [2020-11-09 15:53:28,651 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 [2020-11-09 15:53:29,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 15:53:29,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:29,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 15:53:29,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:29,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:29,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 15:53:29,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1130218134] [2020-11-09 15:53:29,202 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:29,277 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:29,696 INFO L252 McrAutomatonBuilder]: Finished intersection with 214 states and 317 transitions. [2020-11-09 15:53:29,696 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:29,981 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:29,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 15:53:29,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 15:53:29,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-09 15:53:29,983 INFO L87 Difference]: Start difference. First operand 1996 states and 3988 transitions. Second operand 10 states. [2020-11-09 15:53:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:30,042 INFO L93 Difference]: Finished difference Result 2411 states and 4818 transitions. [2020-11-09 15:53:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 15:53:30,043 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-11-09 15:53:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:30,055 INFO L225 Difference]: With dead ends: 2411 [2020-11-09 15:53:30,055 INFO L226 Difference]: Without dead ends: 2411 [2020-11-09 15:53:30,056 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 [2020-11-09 15:53:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2020-11-09 15:53:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2245. [2020-11-09 15:53:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-11-09 15:53:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 4486 transitions. [2020-11-09 15:53:30,209 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 4486 transitions. Word has length 109 [2020-11-09 15:53:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:30,210 INFO L481 AbstractCegarLoop]: Abstraction has 2245 states and 4486 transitions. [2020-11-09 15:53:30,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 15:53:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 4486 transitions. [2020-11-09 15:53:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-09 15:53:30,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:30,221 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:30,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:30,435 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:30,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1065588814, now seen corresponding path program 11 times [2020-11-09 15:53:30,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:30,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539179783] [2020-11-09 15:53:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:30,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539179783] [2020-11-09 15:53:30,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206014250] [2020-11-09 15:53:30,600 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 [2020-11-09 15:53:30,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-11-09 15:53:30,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:30,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 15:53:30,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:30,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:30,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 15:53:30,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [939496868] [2020-11-09 15:53:30,920 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:30,971 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:31,523 INFO L252 McrAutomatonBuilder]: Finished intersection with 220 states and 326 transitions. [2020-11-09 15:53:31,523 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:31,814 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:31,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 15:53:31,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 15:53:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-09 15:53:31,819 INFO L87 Difference]: Start difference. First operand 2245 states and 4486 transitions. Second operand 11 states. [2020-11-09 15:53:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:32,035 INFO L93 Difference]: Finished difference Result 2660 states and 5316 transitions. [2020-11-09 15:53:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 15:53:32,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-11-09 15:53:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:32,049 INFO L225 Difference]: With dead ends: 2660 [2020-11-09 15:53:32,049 INFO L226 Difference]: Without dead ends: 2660 [2020-11-09 15:53:32,050 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 [2020-11-09 15:53:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2020-11-09 15:53:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2494. [2020-11-09 15:53:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2494 states. [2020-11-09 15:53:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 4984 transitions. [2020-11-09 15:53:32,120 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 4984 transitions. Word has length 112 [2020-11-09 15:53:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:32,121 INFO L481 AbstractCegarLoop]: Abstraction has 2494 states and 4984 transitions. [2020-11-09 15:53:32,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 15:53:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 4984 transitions. [2020-11-09 15:53:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-09 15:53:32,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:32,129 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:32,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-09 15:53:32,343 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash -520033804, now seen corresponding path program 12 times [2020-11-09 15:53:32,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:32,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600488500] [2020-11-09 15:53:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:32,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600488500] [2020-11-09 15:53:32,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577999885] [2020-11-09 15:53:32,569 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 [2020-11-09 15:53:33,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-09 15:53:33,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:33,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 15:53:33,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:33,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:33,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-09 15:53:33,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1469195854] [2020-11-09 15:53:33,255 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:33,336 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:33,782 INFO L252 McrAutomatonBuilder]: Finished intersection with 226 states and 335 transitions. [2020-11-09 15:53:33,783 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:34,107 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:34,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 15:53:34,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:34,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 15:53:34,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-09 15:53:34,109 INFO L87 Difference]: Start difference. First operand 2494 states and 4984 transitions. Second operand 12 states. [2020-11-09 15:53:34,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:34,181 INFO L93 Difference]: Finished difference Result 2909 states and 5814 transitions. [2020-11-09 15:53:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 15:53:34,182 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-11-09 15:53:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:34,314 INFO L225 Difference]: With dead ends: 2909 [2020-11-09 15:53:34,314 INFO L226 Difference]: Without dead ends: 2909 [2020-11-09 15:53:34,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-09 15:53:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-11-09 15:53:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2743. [2020-11-09 15:53:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2743 states. [2020-11-09 15:53:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 5482 transitions. [2020-11-09 15:53:34,365 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 5482 transitions. Word has length 115 [2020-11-09 15:53:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:34,365 INFO L481 AbstractCegarLoop]: Abstraction has 2743 states and 5482 transitions. [2020-11-09 15:53:34,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 15:53:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 5482 transitions. [2020-11-09 15:53:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-09 15:53:34,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:34,373 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:34,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-09 15:53:34,587 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:34,588 INFO L82 PathProgramCache]: Analyzing trace with hash -46978958, now seen corresponding path program 13 times [2020-11-09 15:53:34,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:34,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475117797] [2020-11-09 15:53:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:34,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475117797] [2020-11-09 15:53:34,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030841938] [2020-11-09 15:53:34,807 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 [2020-11-09 15:53:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:34,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 15:53:34,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:34,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:34,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-09 15:53:34,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1315676711] [2020-11-09 15:53:34,976 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:35,026 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:35,502 INFO L252 McrAutomatonBuilder]: Finished intersection with 232 states and 344 transitions. [2020-11-09 15:53:35,502 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:35,822 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:35,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 15:53:35,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 15:53:35,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-09 15:53:35,823 INFO L87 Difference]: Start difference. First operand 2743 states and 5482 transitions. Second operand 13 states. [2020-11-09 15:53:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:36,088 INFO L93 Difference]: Finished difference Result 3158 states and 6312 transitions. [2020-11-09 15:53:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 15:53:36,089 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-11-09 15:53:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:36,104 INFO L225 Difference]: With dead ends: 3158 [2020-11-09 15:53:36,104 INFO L226 Difference]: Without dead ends: 3158 [2020-11-09 15:53:36,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 219 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-09 15:53:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2020-11-09 15:53:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2992. [2020-11-09 15:53:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2020-11-09 15:53:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 5980 transitions. [2020-11-09 15:53:36,182 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 5980 transitions. Word has length 118 [2020-11-09 15:53:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:36,182 INFO L481 AbstractCegarLoop]: Abstraction has 2992 states and 5980 transitions. [2020-11-09 15:53:36,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 15:53:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 5980 transitions. [2020-11-09 15:53:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-09 15:53:36,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:36,192 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:36,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 15:53:36,406 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash 942240052, now seen corresponding path program 14 times [2020-11-09 15:53:36,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:36,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872906437] [2020-11-09 15:53:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:36,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872906437] [2020-11-09 15:53:36,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262769831] [2020-11-09 15:53:36,658 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 [2020-11-09 15:53:36,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 15:53:36,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:36,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 15:53:36,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:36,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:36,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-09 15:53:36,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [981027467] [2020-11-09 15:53:36,891 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:36,981 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:37,774 INFO L252 McrAutomatonBuilder]: Finished intersection with 238 states and 353 transitions. [2020-11-09 15:53:37,774 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:38,148 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:38,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 15:53:38,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 15:53:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-09 15:53:38,149 INFO L87 Difference]: Start difference. First operand 2992 states and 5980 transitions. Second operand 14 states. [2020-11-09 15:53:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:38,256 INFO L93 Difference]: Finished difference Result 3407 states and 6810 transitions. [2020-11-09 15:53:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-09 15:53:38,256 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 121 [2020-11-09 15:53:38,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:38,283 INFO L225 Difference]: With dead ends: 3407 [2020-11-09 15:53:38,284 INFO L226 Difference]: Without dead ends: 3407 [2020-11-09 15:53:38,284 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 [2020-11-09 15:53:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2020-11-09 15:53:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3241. [2020-11-09 15:53:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2020-11-09 15:53:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 6478 transitions. [2020-11-09 15:53:38,351 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 6478 transitions. Word has length 121 [2020-11-09 15:53:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:38,351 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 6478 transitions. [2020-11-09 15:53:38,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 15:53:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 6478 transitions. [2020-11-09 15:53:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-09 15:53:38,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:38,360 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:38,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:38,575 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:38,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1299818190, now seen corresponding path program 15 times [2020-11-09 15:53:38,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:38,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536344775] [2020-11-09 15:53:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:38,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536344775] [2020-11-09 15:53:38,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033910787] [2020-11-09 15:53:38,820 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 [2020-11-09 15:53:39,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-09 15:53:39,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:39,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-09 15:53:39,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:39,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:39,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-09 15:53:39,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [968570079] [2020-11-09 15:53:39,304 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:39,359 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:40,081 INFO L252 McrAutomatonBuilder]: Finished intersection with 244 states and 362 transitions. [2020-11-09 15:53:40,081 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:40,656 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:40,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 15:53:40,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:40,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 15:53:40,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-09 15:53:40,658 INFO L87 Difference]: Start difference. First operand 3241 states and 6478 transitions. Second operand 15 states. [2020-11-09 15:53:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:40,782 INFO L93 Difference]: Finished difference Result 3656 states and 7308 transitions. [2020-11-09 15:53:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 15:53:40,783 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 124 [2020-11-09 15:53:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:40,791 INFO L225 Difference]: With dead ends: 3656 [2020-11-09 15:53:40,791 INFO L226 Difference]: Without dead ends: 3656 [2020-11-09 15:53:40,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 229 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-09 15:53:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2020-11-09 15:53:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3490. [2020-11-09 15:53:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3490 states. [2020-11-09 15:53:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 6976 transitions. [2020-11-09 15:53:40,865 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 6976 transitions. Word has length 124 [2020-11-09 15:53:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:40,865 INFO L481 AbstractCegarLoop]: Abstraction has 3490 states and 6976 transitions. [2020-11-09 15:53:40,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 15:53:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 6976 transitions. [2020-11-09 15:53:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-09 15:53:40,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:40,873 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:41,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-09 15:53:41,088 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:41,089 INFO L82 PathProgramCache]: Analyzing trace with hash 874481780, now seen corresponding path program 16 times [2020-11-09 15:53:41,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:41,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617230268] [2020-11-09 15:53:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:41,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617230268] [2020-11-09 15:53:41,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200793312] [2020-11-09 15:53:41,342 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 [2020-11-09 15:53:42,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 15:53:42,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:42,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-09 15:53:42,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:42,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:42,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-09 15:53:42,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1576558005] [2020-11-09 15:53:42,253 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:42,365 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:42,908 INFO L252 McrAutomatonBuilder]: Finished intersection with 250 states and 371 transitions. [2020-11-09 15:53:42,908 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:43,467 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:43,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-09 15:53:43,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:43,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-09 15:53:43,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-09 15:53:43,469 INFO L87 Difference]: Start difference. First operand 3490 states and 6976 transitions. Second operand 16 states. [2020-11-09 15:53:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:43,607 INFO L93 Difference]: Finished difference Result 3905 states and 7806 transitions. [2020-11-09 15:53:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 15:53:43,608 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 127 [2020-11-09 15:53:43,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:43,615 INFO L225 Difference]: With dead ends: 3905 [2020-11-09 15:53:43,615 INFO L226 Difference]: Without dead ends: 3905 [2020-11-09 15:53:43,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 234 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-09 15:53:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2020-11-09 15:53:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3739. [2020-11-09 15:53:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3739 states. [2020-11-09 15:53:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 7474 transitions. [2020-11-09 15:53:43,690 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 7474 transitions. Word has length 127 [2020-11-09 15:53:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:43,690 INFO L481 AbstractCegarLoop]: Abstraction has 3739 states and 7474 transitions. [2020-11-09 15:53:43,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-09 15:53:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 7474 transitions. [2020-11-09 15:53:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-09 15:53:43,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:43,700 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:43,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-09 15:53:43,915 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:43,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1251870222, now seen corresponding path program 17 times [2020-11-09 15:53:43,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:43,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055352759] [2020-11-09 15:53:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:44,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055352759] [2020-11-09 15:53:44,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221468592] [2020-11-09 15:53:44,229 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 [2020-11-09 15:53:44,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-11-09 15:53:44,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:44,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-09 15:53:44,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:44,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:44,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-09 15:53:44,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1703864977] [2020-11-09 15:53:44,573 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:44,630 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:45,350 INFO L252 McrAutomatonBuilder]: Finished intersection with 256 states and 380 transitions. [2020-11-09 15:53:45,350 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:45,803 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:45,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-09 15:53:45,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:45,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-09 15:53:45,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-09 15:53:45,805 INFO L87 Difference]: Start difference. First operand 3739 states and 7474 transitions. Second operand 17 states. [2020-11-09 15:53:46,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:46,100 INFO L93 Difference]: Finished difference Result 4154 states and 8304 transitions. [2020-11-09 15:53:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 15:53:46,101 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 130 [2020-11-09 15:53:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:46,110 INFO L225 Difference]: With dead ends: 4154 [2020-11-09 15:53:46,110 INFO L226 Difference]: Without dead ends: 4154 [2020-11-09 15:53:46,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 239 SyntacticMatches, 16 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-09 15:53:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2020-11-09 15:53:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 3988. [2020-11-09 15:53:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3988 states. [2020-11-09 15:53:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 7972 transitions. [2020-11-09 15:53:46,179 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 7972 transitions. Word has length 130 [2020-11-09 15:53:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:46,180 INFO L481 AbstractCegarLoop]: Abstraction has 3988 states and 7972 transitions. [2020-11-09 15:53:46,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-09 15:53:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 7972 transitions. [2020-11-09 15:53:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-09 15:53:46,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:46,189 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:46,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:46,403 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:46,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:46,404 INFO L82 PathProgramCache]: Analyzing trace with hash -931713100, now seen corresponding path program 18 times [2020-11-09 15:53:46,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:46,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2566712] [2020-11-09 15:53:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:46,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2566712] [2020-11-09 15:53:46,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802896766] [2020-11-09 15:53:46,720 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 [2020-11-09 15:53:47,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-11-09 15:53:47,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:47,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-09 15:53:47,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:47,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:47,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-09 15:53:47,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [422721662] [2020-11-09 15:53:47,311 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:47,373 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:48,406 INFO L252 McrAutomatonBuilder]: Finished intersection with 262 states and 389 transitions. [2020-11-09 15:53:48,406 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:49,034 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:49,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-09 15:53:49,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-09 15:53:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-09 15:53:49,036 INFO L87 Difference]: Start difference. First operand 3988 states and 7972 transitions. Second operand 18 states. [2020-11-09 15:53:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:49,189 INFO L93 Difference]: Finished difference Result 4403 states and 8802 transitions. [2020-11-09 15:53:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-09 15:53:49,189 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-11-09 15:53:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:49,199 INFO L225 Difference]: With dead ends: 4403 [2020-11-09 15:53:49,199 INFO L226 Difference]: Without dead ends: 4403 [2020-11-09 15:53:49,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 244 SyntacticMatches, 17 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-09 15:53:49,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4403 states. [2020-11-09 15:53:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4403 to 4237. [2020-11-09 15:53:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4237 states. [2020-11-09 15:53:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 8470 transitions. [2020-11-09 15:53:49,270 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 8470 transitions. Word has length 133 [2020-11-09 15:53:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:49,271 INFO L481 AbstractCegarLoop]: Abstraction has 4237 states and 8470 transitions. [2020-11-09 15:53:49,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-09 15:53:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 8470 transitions. [2020-11-09 15:53:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-09 15:53:49,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:49,281 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:49,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:49,495 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:49,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2041711282, now seen corresponding path program 19 times [2020-11-09 15:53:49,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:49,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748846717] [2020-11-09 15:53:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:49,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748846717] [2020-11-09 15:53:49,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051064211] [2020-11-09 15:53:49,827 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 [2020-11-09 15:53:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:50,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-09 15:53:50,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:50,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:50,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-09 15:53:50,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1443971362] [2020-11-09 15:53:50,043 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:50,290 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:50,853 INFO L252 McrAutomatonBuilder]: Finished intersection with 268 states and 398 transitions. [2020-11-09 15:53:50,853 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:51,567 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:51,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-09 15:53:51,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:51,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-09 15:53:51,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-09 15:53:51,568 INFO L87 Difference]: Start difference. First operand 4237 states and 8470 transitions. Second operand 19 states. [2020-11-09 15:53:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:51,699 INFO L93 Difference]: Finished difference Result 4652 states and 9300 transitions. [2020-11-09 15:53:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 15:53:51,700 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 136 [2020-11-09 15:53:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:51,710 INFO L225 Difference]: With dead ends: 4652 [2020-11-09 15:53:51,710 INFO L226 Difference]: Without dead ends: 4652 [2020-11-09 15:53:51,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 249 SyntacticMatches, 18 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-09 15:53:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2020-11-09 15:53:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4486. [2020-11-09 15:53:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2020-11-09 15:53:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 8968 transitions. [2020-11-09 15:53:51,803 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 8968 transitions. Word has length 136 [2020-11-09 15:53:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:51,804 INFO L481 AbstractCegarLoop]: Abstraction has 4486 states and 8968 transitions. [2020-11-09 15:53:51,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-09 15:53:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 8968 transitions. [2020-11-09 15:53:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-09 15:53:51,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:51,815 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:52,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:53:52,030 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:52,031 INFO L82 PathProgramCache]: Analyzing trace with hash -373004556, now seen corresponding path program 20 times [2020-11-09 15:53:52,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:52,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875871061] [2020-11-09 15:53:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:52,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875871061] [2020-11-09 15:53:52,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605473508] [2020-11-09 15:53:52,450 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 [2020-11-09 15:53:52,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 15:53:52,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:52,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-09 15:53:52,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:52,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:52,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-09 15:53:52,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [928781117] [2020-11-09 15:53:52,702 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:52,819 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:53,581 INFO L252 McrAutomatonBuilder]: Finished intersection with 274 states and 407 transitions. [2020-11-09 15:53:53,581 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:54,167 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:54,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-09 15:53:54,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:54,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-09 15:53:54,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-09 15:53:54,168 INFO L87 Difference]: Start difference. First operand 4486 states and 8968 transitions. Second operand 20 states. [2020-11-09 15:53:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:54,303 INFO L93 Difference]: Finished difference Result 4901 states and 9798 transitions. [2020-11-09 15:53:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 15:53:54,303 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2020-11-09 15:53:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:54,311 INFO L225 Difference]: With dead ends: 4901 [2020-11-09 15:53:54,311 INFO L226 Difference]: Without dead ends: 4901 [2020-11-09 15:53:54,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 254 SyntacticMatches, 19 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-09 15:53:54,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2020-11-09 15:53:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 4735. [2020-11-09 15:53:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4735 states. [2020-11-09 15:53:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 9466 transitions. [2020-11-09 15:53:54,393 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 9466 transitions. Word has length 139 [2020-11-09 15:53:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:54,393 INFO L481 AbstractCegarLoop]: Abstraction has 4735 states and 9466 transitions. [2020-11-09 15:53:54,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-09 15:53:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 9466 transitions. [2020-11-09 15:53:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-09 15:53:54,404 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:54,404 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:54,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-09 15:53:54,620 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:54,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash -765293710, now seen corresponding path program 21 times [2020-11-09 15:53:54,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:54,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744492460] [2020-11-09 15:53:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:55,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744492460] [2020-11-09 15:53:55,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463750914] [2020-11-09 15:53:55,095 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 [2020-11-09 15:53:55,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-11-09 15:53:55,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:53:55,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-09 15:53:55,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:53:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:55,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:53:55,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-09 15:53:55,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [30237164] [2020-11-09 15:53:55,940 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:53:55,986 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:53:56,971 INFO L252 McrAutomatonBuilder]: Finished intersection with 280 states and 416 transitions. [2020-11-09 15:53:56,972 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:53:57,660 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:53:57,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-09 15:53:57,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:53:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-09 15:53:57,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-09 15:53:57,664 INFO L87 Difference]: Start difference. First operand 4735 states and 9466 transitions. Second operand 21 states. [2020-11-09 15:53:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:53:57,866 INFO L93 Difference]: Finished difference Result 5150 states and 10296 transitions. [2020-11-09 15:53:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-09 15:53:57,867 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 142 [2020-11-09 15:53:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:53:57,878 INFO L225 Difference]: With dead ends: 5150 [2020-11-09 15:53:57,878 INFO L226 Difference]: Without dead ends: 5150 [2020-11-09 15:53:57,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 259 SyntacticMatches, 20 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-09 15:53:57,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2020-11-09 15:53:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 4984. [2020-11-09 15:53:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-11-09 15:53:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 9964 transitions. [2020-11-09 15:53:57,975 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 9964 transitions. Word has length 142 [2020-11-09 15:53:57,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:53:57,976 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 9964 transitions. [2020-11-09 15:53:57,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-09 15:53:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 9964 transitions. [2020-11-09 15:53:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-09 15:53:57,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:53:57,987 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:53:58,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-09 15:53:58,201 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:53:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:53:58,202 INFO L82 PathProgramCache]: Analyzing trace with hash -845468108, now seen corresponding path program 22 times [2020-11-09 15:53:58,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:53:58,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527012568] [2020-11-09 15:53:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:53:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:53:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:53:58,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527012568] [2020-11-09 15:53:58,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947994204] [2020-11-09 15:53:58,851 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 [2020-11-09 15:54:01,083 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 15:54:01,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:54:01,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-09 15:54:01,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:54:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-11-09 15:54:01,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:54:01,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-09 15:54:01,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [985211880] [2020-11-09 15:54:01,139 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:54:01,208 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:54:02,172 INFO L252 McrAutomatonBuilder]: Finished intersection with 286 states and 425 transitions. [2020-11-09 15:54:02,172 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:54:02,996 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:54:02,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-09 15:54:02,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:54:02,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-09 15:54:02,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-09 15:54:02,997 INFO L87 Difference]: Start difference. First operand 4984 states and 9964 transitions. Second operand 22 states. [2020-11-09 15:54:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:54:03,156 INFO L93 Difference]: Finished difference Result 5233 states and 10462 transitions. [2020-11-09 15:54:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-09 15:54:03,157 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-11-09 15:54:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:54:03,164 INFO L225 Difference]: With dead ends: 5233 [2020-11-09 15:54:03,165 INFO L226 Difference]: Without dead ends: 5233 [2020-11-09 15:54:03,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 264 SyntacticMatches, 21 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-09 15:54:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2020-11-09 15:54:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 5233. [2020-11-09 15:54:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5233 states. [2020-11-09 15:54:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 10462 transitions. [2020-11-09 15:54:03,250 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 10462 transitions. Word has length 145 [2020-11-09 15:54:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:54:03,251 INFO L481 AbstractCegarLoop]: Abstraction has 5233 states and 10462 transitions. [2020-11-09 15:54:03,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-09 15:54:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 10462 transitions. [2020-11-09 15:54:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-09 15:54:03,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:54:03,262 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:54:03,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 15:54:03,477 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:54:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:54:03,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1319142350, now seen corresponding path program 23 times [2020-11-09 15:54:03,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:54:03,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242783619] [2020-11-09 15:54:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:54:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:54:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:54:07,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242783619] [2020-11-09 15:54:07,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345307532] [2020-11-09 15:54:07,454 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 [2020-11-09 15:54:07,776 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-11-09 15:54:07,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 15:54:07,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 123 conjunts are in the unsatisfiable core [2020-11-09 15:54:07,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 15:54:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:54:07,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 15:54:07,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-11-09 15:54:07,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [720626873] [2020-11-09 15:54:07,961 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:54:08,089 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:54:09,089 INFO L252 McrAutomatonBuilder]: Finished intersection with 292 states and 434 transitions. [2020-11-09 15:54:09,089 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:54:09,580 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:54:09,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-11-09 15:54:09,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:54:09,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-11-09 15:54:09,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-11-09 15:54:09,584 INFO L87 Difference]: Start difference. First operand 5233 states and 10462 transitions. Second operand 63 states. [2020-11-09 15:56:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:40,925 INFO L93 Difference]: Finished difference Result 370338 states and 740629 transitions. [2020-11-09 15:56:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 693 states. [2020-11-09 15:56:40,926 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-11-09 15:56:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:41,728 INFO L225 Difference]: With dead ends: 370338 [2020-11-09 15:56:41,728 INFO L226 Difference]: Without dead ends: 370336 [2020-11-09 15:56:41,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 286 SyntacticMatches, 4 SemanticMatches, 691 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198135 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=2643, Invalid=476913, Unknown=0, NotChecked=0, Total=479556 [2020-11-09 15:56:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370336 states. [2020-11-09 15:56:43,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370336 to 11740. [2020-11-09 15:56:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11740 states. [2020-11-09 15:56:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11740 states to 11740 states and 23673 transitions. [2020-11-09 15:56:44,098 INFO L78 Accepts]: Start accepts. Automaton has 11740 states and 23673 transitions. Word has length 148 [2020-11-09 15:56:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:56:44,099 INFO L481 AbstractCegarLoop]: Abstraction has 11740 states and 23673 transitions. [2020-11-09 15:56:44,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-11-09 15:56:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 11740 states and 23673 transitions. [2020-11-09 15:56:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-09 15:56:44,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:44,122 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:56:44,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-09 15:56:44,336 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:44,337 INFO L82 PathProgramCache]: Analyzing trace with hash 916527342, now seen corresponding path program 24 times [2020-11-09 15:56:44,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:44,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516248533] [2020-11-09 15:56:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:56:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 1273 trivial. 0 not checked. [2020-11-09 15:56:44,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516248533] [2020-11-09 15:56:44,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:56:44,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:56:44,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [49107541] [2020-11-09 15:56:44,409 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:56:44,484 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:56:45,589 INFO L252 McrAutomatonBuilder]: Finished intersection with 288 states and 426 transitions. [2020-11-09 15:56:45,589 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:56:45,680 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [579405#(not (= (select (select |#pthreadsMutex| |~#mymutex~0.base|) |~#mymutex~0.offset|) 0))] [2020-11-09 15:56:45,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:56:45,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:56:45,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:56:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:56:45,682 INFO L87 Difference]: Start difference. First operand 11740 states and 23673 transitions. Second operand 4 states. [2020-11-09 15:56:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:56:45,726 INFO L93 Difference]: Finished difference Result 2905 states and 3722 transitions. [2020-11-09 15:56:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:56:45,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-11-09 15:56:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:56:45,733 INFO L225 Difference]: With dead ends: 2905 [2020-11-09 15:56:45,733 INFO L226 Difference]: Without dead ends: 2905 [2020-11-09 15:56:45,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:56:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-11-09 15:56:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2905. [2020-11-09 15:56:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2905 states. [2020-11-09 15:56:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3722 transitions. [2020-11-09 15:56:45,770 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3722 transitions. Word has length 148 [2020-11-09 15:56:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:56:45,771 INFO L481 AbstractCegarLoop]: Abstraction has 2905 states and 3722 transitions. [2020-11-09 15:56:45,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:56:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3722 transitions. [2020-11-09 15:56:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-09 15:56:45,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:56:45,776 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:56:45,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-09 15:56:45,776 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:56:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:56:45,777 INFO L82 PathProgramCache]: Analyzing trace with hash 464144836, now seen corresponding path program 25 times [2020-11-09 15:56:45,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:56:45,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564496248] [2020-11-09 15:56:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:56:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2020-11-09 15:56:49,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-09 15:56:49,576 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-09 15:56:49,580 WARN L250 ceAbstractionStarter]: Timeout [2020-11-09 15:56:49,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:56:49 BasicIcfg [2020-11-09 15:56:49,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:56:49,582 INFO L168 Benchmark]: Toolchain (without parser) took 227278.16 ms. Allocated memory was 151.0 MB in the beginning and 7.1 GB in the end (delta: 6.9 GB). Free memory was 124.4 MB in the beginning and 5.7 GB in the end (delta: -5.6 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2020-11-09 15:56:49,582 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:56:49,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1641.79 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 70.3 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:56:49,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.34 ms. Allocated memory is still 151.0 MB. Free memory was 69.7 MB in the beginning and 67.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:56:49,583 INFO L168 Benchmark]: Boogie Preprocessor took 34.77 ms. Allocated memory is still 151.0 MB. Free memory was 67.6 MB in the beginning and 66.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:56:49,583 INFO L168 Benchmark]: RCFGBuilder took 631.20 ms. Allocated memory is still 151.0 MB. Free memory was 66.1 MB in the beginning and 124.3 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:56:49,584 INFO L168 Benchmark]: TraceAbstraction took 224892.57 ms. Allocated memory was 151.0 MB in the beginning and 7.1 GB in the end (delta: 6.9 GB). Free memory was 123.8 MB in the beginning and 5.7 GB in the end (delta: -5.6 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2020-11-09 15:56:49,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1641.79 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 70.3 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.34 ms. Allocated memory is still 151.0 MB. Free memory was 69.7 MB in the beginning and 67.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.77 ms. Allocated memory is still 151.0 MB. Free memory was 67.6 MB in the beginning and 66.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 631.20 ms. Allocated memory is still 151.0 MB. Free memory was 66.1 MB in the beginning and 124.3 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 224892.57 ms. Allocated memory was 151.0 MB in the beginning and 7.1 GB in the end (delta: 6.9 GB). Free memory was 123.8 MB in the beginning and 5.7 GB in the end (delta: -5.6 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 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: 9.2s, 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 analyzing trace of length 149 with TraceHistMax 20,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 59 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 224.7s, OverallIterations: 27, TraceHistogramMax: 20, AutomataDifference: 156.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 3846 SDtfs, 7346 SDslu, 201425 SDs, 0 SdLazy, 120525 SolverSat, 1404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5923 GetRequests, 4665 SyntacticMatches, 262 SemanticMatches, 996 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200904 ImplicationChecksByTransitivity, 55.7s 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: 3.8s AutomataMinimizationTime, 26 MinimizatonAttempts, 361462 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 8.1s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 5068 NumberOfCodeBlocks, 4892 NumberOfCodeBlocksAsserted, 219 NumberOfCheckSat, 5019 ConstructedInterpolants, 0 QuantifiedInterpolants, 1163307 SizeOfPredicates, 62 NumberOfNonLiveVariables, 8970 ConjunctsInSsa, 376 ConjunctsInUnsatCore, 49 InterpolantComputations, 3 PerfectInterpolantSequences, 29554/40358 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