/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:09:38,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:09:38,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:09:38,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:09:38,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:09:38,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:09:38,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:09:38,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:09:38,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:09:38,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:09:38,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:09:38,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:09:38,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:09:38,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:09:38,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:09:38,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:09:38,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:09:38,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:09:38,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:09:38,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:09:38,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:09:38,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:09:38,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:09:38,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:09:38,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:09:38,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:09:38,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:09:38,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:09:38,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:09:38,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:09:38,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:09:38,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:09:38,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:09:38,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:09:38,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:09:38,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:09:38,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:09:38,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:09:38,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:09:38,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:09:38,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:09:38,670 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-SP.epf [2020-11-09 17:09:38,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:09:38,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:09:38,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:09:38,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:09:38,699 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:09:38,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:09:38,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:09:38,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:09:38,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:09:38,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:09:38,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:09:38,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:09:38,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:09:38,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:09:38,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:09:38,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:09:38,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:09:38,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:09:38,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:09:38,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:09:38,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:09:38,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:09:38,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:09:38,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:09:38,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:09:38,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:09:38,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:09:38,703 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:09:38,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:09:38,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:09:38,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:09:39,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:09:39,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:09:39,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:09:39,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:09:39,155 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:09:39,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-11-09 17:09:39,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4afffab7a/dcdee2744d334c0c8390a7cd50606b2b/FLAGf3aff87de [2020-11-09 17:09:39,843 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:09:39,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-11-09 17:09:39,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4afffab7a/dcdee2744d334c0c8390a7cd50606b2b/FLAGf3aff87de [2020-11-09 17:09:40,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4afffab7a/dcdee2744d334c0c8390a7cd50606b2b [2020-11-09 17:09:40,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:09:40,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:09:40,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:09:40,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:09:40,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:09:40,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d90d554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40, skipping insertion in model container [2020-11-09 17:09:40,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:09:40,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:09:40,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:09:40,604 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:09:40,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:09:40,817 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:09:40,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40 WrapperNode [2020-11-09 17:09:40,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:09:40,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:09:40,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:09:40,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:09:40,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:09:40,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:09:40,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:09:40,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:09:40,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (1/1) ... [2020-11-09 17:09:40,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:09:40,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:09:40,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:09:40,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:09:40,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (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 17:09:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:09:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:09:40,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:09:40,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:09:40,969 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:09:40,969 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:09:40,969 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:09:40,969 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:09:40,970 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:09:40,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:09:40,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:09:40,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:09:40,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:09:40,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:09:40,972 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 17:09:41,570 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:09:41,570 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:09:41,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:41 BoogieIcfgContainer [2020-11-09 17:09:41,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:09:41,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:09:41,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:09:41,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:09:41,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:09:40" (1/3) ... [2020-11-09 17:09:41,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc541a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:41, skipping insertion in model container [2020-11-09 17:09:41,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:40" (2/3) ... [2020-11-09 17:09:41,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc541a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:41, skipping insertion in model container [2020-11-09 17:09:41,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:41" (3/3) ... [2020-11-09 17:09:41,586 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-11-09 17:09:41,603 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:09:41,603 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:09:41,607 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:09:41,609 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:09:41,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,671 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,671 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,680 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,680 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,693 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,693 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:09:41,707 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:09:41,721 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:09:41,747 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:09:41,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:09:41,748 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:09:41,748 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:09:41,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:09:41,748 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:09:41,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:09:41,749 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:09:41,764 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:09:41,764 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:09:41,768 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:09:41,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 17:09:41,817 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 17:09:41,817 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:09:41,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:09:41,825 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:09:45,023 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-09 17:09:45,852 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 17:09:45,957 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:09:46,171 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 17:09:46,277 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:09:46,450 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-09 17:09:46,450 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 17:09:46,456 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:09:46,498 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 17:09:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 17:09:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:09:46,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:46,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:46,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-09 17:09:46,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:46,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850324618] [2020-11-09 17:09:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:46,774 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 17:09:46,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850324618] [2020-11-09 17:09:46,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:46,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:09:46,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2054602421] [2020-11-09 17:09:46,778 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:46,782 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:46,797 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:09:46,797 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:46,803 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:46,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:09:46,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:46,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:09:46,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:46,827 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 17:09:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:46,883 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-11-09 17:09:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:09:46,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 17:09:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:46,900 INFO L225 Difference]: With dead ends: 294 [2020-11-09 17:09:46,900 INFO L226 Difference]: Without dead ends: 230 [2020-11-09 17:09:46,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:46,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-09 17:09:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-09 17:09:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-09 17:09:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-11-09 17:09:46,972 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-11-09 17:09:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:46,973 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-11-09 17:09:46,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:09:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-11-09 17:09:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:09:46,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:46,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:46,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:09:46,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:46,976 INFO L82 PathProgramCache]: Analyzing trace with hash 305615834, now seen corresponding path program 1 times [2020-11-09 17:09:46,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:47,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000618488] [2020-11-09 17:09:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:47,121 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 17:09:47,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000618488] [2020-11-09 17:09:47,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:47,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:09:47,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [852058501] [2020-11-09 17:09:47,122 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:47,124 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:47,126 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-11-09 17:09:47,128 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:47,156 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:47,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:09:47,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:47,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:09:47,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:47,160 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-11-09 17:09:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:47,172 INFO L93 Difference]: Finished difference Result 215 states and 589 transitions. [2020-11-09 17:09:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:09:47,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:09:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:47,176 INFO L225 Difference]: With dead ends: 215 [2020-11-09 17:09:47,176 INFO L226 Difference]: Without dead ends: 215 [2020-11-09 17:09:47,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-09 17:09:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-11-09 17:09:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-09 17:09:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 589 transitions. [2020-11-09 17:09:47,201 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 589 transitions. Word has length 9 [2020-11-09 17:09:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:47,201 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 589 transitions. [2020-11-09 17:09:47,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:09:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 589 transitions. [2020-11-09 17:09:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:09:47,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:47,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:47,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:09:47,204 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash 884125177, now seen corresponding path program 1 times [2020-11-09 17:09:47,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:47,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973527751] [2020-11-09 17:09:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:47,277 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 17:09:47,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973527751] [2020-11-09 17:09:47,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:47,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:09:47,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1472831478] [2020-11-09 17:09:47,279 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:47,280 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:47,284 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-11-09 17:09:47,284 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:47,348 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:47,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:09:47,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:47,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:09:47,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:09:47,352 INFO L87 Difference]: Start difference. First operand 215 states and 589 transitions. Second operand 4 states. [2020-11-09 17:09:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:47,386 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-09 17:09:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:09:47,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 17:09:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:47,389 INFO L225 Difference]: With dead ends: 242 [2020-11-09 17:09:47,389 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 17:09:47,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:09:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 17:09:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 17:09:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 17:09:47,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 17:09:47,402 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-11-09 17:09:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:47,403 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 17:09:47,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:09:47,403 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 17:09:47,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:09:47,404 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:47,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:47,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:09:47,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:47,406 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-11-09 17:09:47,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:47,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817748188] [2020-11-09 17:09:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:09:47,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817748188] [2020-11-09 17:09:47,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:47,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:09:47,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1683214937] [2020-11-09 17:09:47,478 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:47,479 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:47,482 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 17:09:47,482 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:47,506 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:47,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:09:47,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:47,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:09:47,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:47,508 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-09 17:09:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:47,514 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-11-09 17:09:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:09:47,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 17:09:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:47,517 INFO L225 Difference]: With dead ends: 134 [2020-11-09 17:09:47,517 INFO L226 Difference]: Without dead ends: 134 [2020-11-09 17:09:47,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:47,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-09 17:09:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-09 17:09:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-09 17:09:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-11-09 17:09:47,526 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-11-09 17:09:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:47,527 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-11-09 17:09:47,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:09:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-11-09 17:09:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 17:09:47,529 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:47,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:47,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:09:47,529 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1054826072, now seen corresponding path program 1 times [2020-11-09 17:09:47,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:47,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380975857] [2020-11-09 17:09:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:47,569 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 17:09:47,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380975857] [2020-11-09 17:09:47,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:47,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:09:47,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [545262971] [2020-11-09 17:09:47,570 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:47,572 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:47,577 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-11-09 17:09:47,577 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:47,671 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:47,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:09:47,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:09:47,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:47,678 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 3 states. [2020-11-09 17:09:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:47,701 INFO L93 Difference]: Finished difference Result 206 states and 495 transitions. [2020-11-09 17:09:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:09:47,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-09 17:09:47,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:47,703 INFO L225 Difference]: With dead ends: 206 [2020-11-09 17:09:47,703 INFO L226 Difference]: Without dead ends: 110 [2020-11-09 17:09:47,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:09:47,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-09 17:09:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-11-09 17:09:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-09 17:09:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-11-09 17:09:47,710 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 13 [2020-11-09 17:09:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:47,710 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-11-09 17:09:47,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:09:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-11-09 17:09:47,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 17:09:47,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:47,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:47,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:09:47,713 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:47,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1395741464, now seen corresponding path program 2 times [2020-11-09 17:09:47,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:47,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112410460] [2020-11-09 17:09:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:47,763 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 17:09:47,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112410460] [2020-11-09 17:09:47,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:47,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:09:47,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1347619560] [2020-11-09 17:09:47,765 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:47,766 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:47,772 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 76 transitions. [2020-11-09 17:09:47,772 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:47,835 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:47,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:09:47,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:47,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:09:47,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:09:47,839 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-11-09 17:09:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:47,865 INFO L93 Difference]: Finished difference Result 158 states and 361 transitions. [2020-11-09 17:09:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:09:47,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 17:09:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:47,867 INFO L225 Difference]: With dead ends: 158 [2020-11-09 17:09:47,867 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 17:09:47,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:09:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 17:09:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 17:09:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 17:09:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-09 17:09:47,872 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 13 [2020-11-09 17:09:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:47,872 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-09 17:09:47,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:09:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-09 17:09:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 17:09:47,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:47,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:47,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:09:47,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:47,875 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 3 times [2020-11-09 17:09:47,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:47,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062420659] [2020-11-09 17:09:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:47,951 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 17:09:47,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062420659] [2020-11-09 17:09:47,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:47,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:09:47,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1629501020] [2020-11-09 17:09:47,953 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:47,954 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:47,960 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-11-09 17:09:47,960 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:48,049 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:09:48,075 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:09:48,104 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:09:48,127 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:09:48,141 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:48,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:09:48,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:48,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:09:48,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:09:48,143 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-11-09 17:09:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:48,187 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-09 17:09:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:09:48,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 17:09:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:48,189 INFO L225 Difference]: With dead ends: 99 [2020-11-09 17:09:48,189 INFO L226 Difference]: Without dead ends: 77 [2020-11-09 17:09:48,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:09:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-09 17:09:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-09 17:09:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-09 17:09:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-11-09 17:09:48,194 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-11-09 17:09:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:48,194 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-11-09 17:09:48,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:09:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-11-09 17:09:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:09:48,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:48,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:48,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:09:48,196 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:48,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:48,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-11-09 17:09:48,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:48,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369975080] [2020-11-09 17:09:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:48,312 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 17:09:48,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369975080] [2020-11-09 17:09:48,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:48,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:09:48,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1909869142] [2020-11-09 17:09:48,314 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:48,316 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:48,322 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2020-11-09 17:09:48,322 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:48,334 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:09:48,372 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:09:48,483 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4065#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:09:48,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 17:09:48,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:48,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 17:09:48,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 17:09:48,485 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 6 states. [2020-11-09 17:09:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:48,530 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-11-09 17:09:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:09:48,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-09 17:09:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:48,531 INFO L225 Difference]: With dead ends: 78 [2020-11-09 17:09:48,532 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 17:09:48,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:09:48,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 17:09:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 17:09:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 17:09:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-09 17:09:48,535 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-11-09 17:09:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:48,535 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-09 17:09:48,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 17:09:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-09 17:09:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:09:48,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:48,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:48,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:09:48,537 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:48,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:48,537 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-11-09 17:09:48,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:48,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448354911] [2020-11-09 17:09:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:48,652 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 17:09:48,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448354911] [2020-11-09 17:09:48,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:48,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:09:48,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [253531074] [2020-11-09 17:09:48,653 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:48,655 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:48,661 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 84 transitions. [2020-11-09 17:09:48,661 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:48,782 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4278#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:09:48,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:09:48,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:48,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:09:48,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:09:48,784 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 7 states. [2020-11-09 17:09:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:48,837 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-09 17:09:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:09:48,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 17:09:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:48,838 INFO L225 Difference]: With dead ends: 60 [2020-11-09 17:09:48,839 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 17:09:48,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:09:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 17:09:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 17:09:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 17:09:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-09 17:09:48,841 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-09 17:09:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:48,842 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-09 17:09:48,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:09:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-09 17:09:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:09:48,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:09:48,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:09:48,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:09:48,843 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:09:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:09:48,843 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-11-09 17:09:48,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:09:48,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764174244] [2020-11-09 17:09:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:09:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:09:48,879 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 17:09:48,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764174244] [2020-11-09 17:09:48,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:09:48,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:09:48,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2006029446] [2020-11-09 17:09:48,881 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:09:48,883 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:09:48,889 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-11-09 17:09:48,890 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:09:48,945 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:09:48,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:09:48,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:09:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:09:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:09:48,946 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-09 17:09:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:09:48,961 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-09 17:09:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:09:48,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 17:09:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:09:48,962 INFO L225 Difference]: With dead ends: 53 [2020-11-09 17:09:48,962 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:09:48,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:09:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:09:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:09:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:09:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:09:48,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 17:09:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:09:48,963 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:09:48,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:09:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:09:48,964 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:09:48,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 17:09:48,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:09:48 BasicIcfg [2020-11-09 17:09:48,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:09:48,969 INFO L168 Benchmark]: Toolchain (without parser) took 8836.70 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 134.9 MB in the beginning and 101.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 102.6 MB. Max. memory is 8.0 GB. [2020-11-09 17:09:48,969 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 155.2 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 80.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:09:48,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.76 ms. Allocated memory is still 155.2 MB. Free memory was 134.1 MB in the beginning and 118.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:09:48,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.67 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 116.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:09:48,972 INFO L168 Benchmark]: Boogie Preprocessor took 26.38 ms. Allocated memory is still 155.2 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:09:48,972 INFO L168 Benchmark]: RCFGBuilder took 681.12 ms. Allocated memory is still 155.2 MB. Free memory was 115.2 MB in the beginning and 92.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:09:48,973 INFO L168 Benchmark]: TraceAbstraction took 7389.63 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 92.4 MB in the beginning and 101.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 61.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:09:48,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 155.2 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 80.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 677.76 ms. Allocated memory is still 155.2 MB. Free memory was 134.1 MB in the beginning and 118.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.67 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 116.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.38 ms. Allocated memory is still 155.2 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 681.12 ms. Allocated memory is still 155.2 MB. Free memory was 115.2 MB in the beginning and 92.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7389.63 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 92.4 MB in the beginning and 101.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 61.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 775 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 189 SDtfs, 103 SDslu, 202 SDs, 0 SdLazy, 122 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 151 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 3581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...