/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/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:02:57,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:02:57,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:02:57,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:02:57,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:02:57,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:02:57,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:02:57,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:02:57,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:02:57,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:02:57,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:02:57,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:02:57,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:02:57,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:02:57,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:02:57,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:02:57,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:02:57,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:02:57,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:02:57,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:02:57,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:02:57,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:02:57,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:02:57,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:02:57,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:02:57,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:02:57,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:02:57,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:02:57,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:02:57,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:02:57,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:02:57,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:02:57,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:02:57,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:02:57,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:02:57,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:02:57,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:02:57,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:02:57,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:02:57,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:02:57,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:02:57,415 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 17:02:57,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:02:57,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:02:57,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:02:57,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:02:57,470 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:02:57,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:02:57,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:02:57,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:02:57,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:02:57,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:02:57,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:02:57,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:02:57,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:02:57,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:02:57,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:02:57,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:02:57,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:02:57,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:02:57,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:02:57,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:02:57,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:02:57,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:02:57,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:02:57,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:02:57,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:02:57,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:02:57,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:02:57,474 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:02:57,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:02:57,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:02:57,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:02:57,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:02:57,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:02:57,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:02:57,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:02:57,853 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:02:57,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-11-09 17:02:57,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a25aa0c8/0e7752f66e4c4330bfc2098852ce72a9/FLAGe765b36e8 [2020-11-09 17:02:58,660 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:02:58,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-11-09 17:02:58,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a25aa0c8/0e7752f66e4c4330bfc2098852ce72a9/FLAGe765b36e8 [2020-11-09 17:02:58,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a25aa0c8/0e7752f66e4c4330bfc2098852ce72a9 [2020-11-09 17:02:58,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:02:58,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:02:58,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:58,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:02:58,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:02:58,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:58" (1/1) ... [2020-11-09 17:02:58,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef90939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:58, skipping insertion in model container [2020-11-09 17:02:58,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:58" (1/1) ... [2020-11-09 17:02:58,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:02:59,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:02:59,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:59,596 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:02:59,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:59,844 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:02:59,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59 WrapperNode [2020-11-09 17:02:59,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:59,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:59,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:02:59,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:02:59,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:59,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:02:59,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:02:59,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:02:59,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (1/1) ... [2020-11-09 17:02:59,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:02:59,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:02:59,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:02:59,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:02:59,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (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 17:03:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:03:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:03:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:03:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:03:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:03:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:03:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:03:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:03:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:03:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:03:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:03:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:03:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:03:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:03:00,041 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 17:03:00,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:03:00,546 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:03:00,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:03:00 BoogieIcfgContainer [2020-11-09 17:03:00,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:03:00,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:03:00,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:03:00,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:03:00,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:02:58" (1/3) ... [2020-11-09 17:03:00,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47963de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:03:00, skipping insertion in model container [2020-11-09 17:03:00,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:59" (2/3) ... [2020-11-09 17:03:00,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47963de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:03:00, skipping insertion in model container [2020-11-09 17:03:00,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:03:00" (3/3) ... [2020-11-09 17:03:00,564 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2020-11-09 17:03:00,588 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:03:00,588 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:03:00,592 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:03:00,593 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:03:00,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,674 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,674 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,674 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,675 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,675 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,681 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,681 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:03:00,700 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:03:00,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:03:00,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:03:00,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:03:00,755 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:03:00,755 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:03:00,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:03:00,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:03:00,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:03:00,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:03:00,777 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:03:00,778 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 17:03:00,782 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 17:03:00,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-09 17:03:00,881 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-09 17:03:00,881 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:03:00,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-09 17:03:00,894 INFO L116 LiptonReduction]: Number of co-enabled transitions 1356 [2020-11-09 17:03:03,972 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-09 17:03:04,084 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:03:04,325 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-09 17:03:04,434 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:03:04,450 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-11-09 17:03:04,450 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-09 17:03:04,461 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:03:04,506 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-11-09 17:03:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-11-09 17:03:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:03:04,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:03:04,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:03:04,521 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:03:04,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:03:04,528 INFO L82 PathProgramCache]: Analyzing trace with hash 982566713, now seen corresponding path program 1 times [2020-11-09 17:03:04,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:03:04,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191698874] [2020-11-09 17:03:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:03:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:03:04,792 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 17:03:04,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191698874] [2020-11-09 17:03:04,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:03:04,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:03:04,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [291231157] [2020-11-09 17:03:04,797 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:03:04,800 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:03:04,814 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:03:04,814 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:03:04,819 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:03:04,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:03:04,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:03:04,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:03:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:03:04,839 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-11-09 17:03:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:03:04,863 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 17:03:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:03:04,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 17:03:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:03:04,881 INFO L225 Difference]: With dead ends: 282 [2020-11-09 17:03:04,881 INFO L226 Difference]: Without dead ends: 234 [2020-11-09 17:03:04,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:03:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-09 17:03:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-09 17:03:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-09 17:03:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-11-09 17:03:04,963 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-11-09 17:03:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:03:04,964 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-11-09 17:03:04,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:03:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-11-09 17:03:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:03:04,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:03:04,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:03:04,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:03:04,967 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:03:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:03:04,968 INFO L82 PathProgramCache]: Analyzing trace with hash 394788315, now seen corresponding path program 1 times [2020-11-09 17:03:04,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:03:04,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767298287] [2020-11-09 17:03:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:03:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:03:05,050 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 17:03:05,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767298287] [2020-11-09 17:03:05,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:03:05,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:03:05,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [187473594] [2020-11-09 17:03:05,052 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:03:05,053 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:03:05,054 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 17:03:05,054 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:03:05,055 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:03:05,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:03:05,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:03:05,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:03:05,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:03:05,058 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 3 states. [2020-11-09 17:03:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:03:05,120 INFO L93 Difference]: Finished difference Result 180 states and 440 transitions. [2020-11-09 17:03:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:03:05,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:03:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:03:05,126 INFO L225 Difference]: With dead ends: 180 [2020-11-09 17:03:05,126 INFO L226 Difference]: Without dead ends: 180 [2020-11-09 17:03:05,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:03:05,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-09 17:03:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-09 17:03:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-09 17:03:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-11-09 17:03:05,149 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 9 [2020-11-09 17:03:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:03:05,150 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-11-09 17:03:05,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:03:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-11-09 17:03:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:03:05,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:03:05,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:03:05,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:03:05,153 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:03:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:03:05,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1410976981, now seen corresponding path program 1 times [2020-11-09 17:03:05,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:03:05,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757785764] [2020-11-09 17:03:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:03:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:03:05,268 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 17:03:05,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757785764] [2020-11-09 17:03:05,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:03:05,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:03:05,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1383868529] [2020-11-09 17:03:05,269 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:03:05,270 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:03:05,272 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-11-09 17:03:05,272 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:03:05,272 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:03:05,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:03:05,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:03:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:03:05,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:03:05,274 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 4 states. [2020-11-09 17:03:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:03:05,303 INFO L93 Difference]: Finished difference Result 117 states and 251 transitions. [2020-11-09 17:03:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:03:05,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 17:03:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:03:05,305 INFO L225 Difference]: With dead ends: 117 [2020-11-09 17:03:05,306 INFO L226 Difference]: Without dead ends: 117 [2020-11-09 17:03:05,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 17:03:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-09 17:03:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-11-09 17:03:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-09 17:03:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 251 transitions. [2020-11-09 17:03:05,314 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 251 transitions. Word has length 11 [2020-11-09 17:03:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:03:05,314 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 251 transitions. [2020-11-09 17:03:05,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:03:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 251 transitions. [2020-11-09 17:03:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:03:05,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:03:05,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:03:05,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:03:05,316 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:03:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:03:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1834300814, now seen corresponding path program 1 times [2020-11-09 17:03:05,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:03:05,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712307805] [2020-11-09 17:03:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:03:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:03:05,412 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 17:03:05,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712307805] [2020-11-09 17:03:05,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:03:05,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:03:05,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [149038479] [2020-11-09 17:03:05,414 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:03:05,416 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:03:05,420 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-11-09 17:03:05,420 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:03:05,584 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:03:05,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:03:05,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:03:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:03:05,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:03:05,586 INFO L87 Difference]: Start difference. First operand 117 states and 251 transitions. Second operand 5 states. [2020-11-09 17:03:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:03:05,613 INFO L93 Difference]: Finished difference Result 93 states and 203 transitions. [2020-11-09 17:03:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:03:05,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 17:03:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:03:05,615 INFO L225 Difference]: With dead ends: 93 [2020-11-09 17:03:05,615 INFO L226 Difference]: Without dead ends: 93 [2020-11-09 17:03:05,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:03:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-09 17:03:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-09 17:03:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-09 17:03:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 203 transitions. [2020-11-09 17:03:05,621 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 203 transitions. Word has length 14 [2020-11-09 17:03:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:03:05,621 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 203 transitions. [2020-11-09 17:03:05,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:03:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 203 transitions. [2020-11-09 17:03:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:03:05,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:03:05,623 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 17:03:05,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:03:05,623 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:03:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:03:05,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1160615665, now seen corresponding path program 1 times [2020-11-09 17:03:05,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:03:05,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033693020] [2020-11-09 17:03:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:03:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:03:05,695 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 17:03:05,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033693020] [2020-11-09 17:03:05,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:03:05,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:03:05,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1406647555] [2020-11-09 17:03:05,696 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:03:05,699 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:03:05,705 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2020-11-09 17:03:05,706 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:03:05,714 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:03:05,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:03:05,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:03:05,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:03:05,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:03:05,715 INFO L87 Difference]: Start difference. First operand 93 states and 203 transitions. Second operand 4 states. [2020-11-09 17:03:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:03:05,737 INFO L93 Difference]: Finished difference Result 111 states and 233 transitions. [2020-11-09 17:03:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:03:05,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 17:03:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:03:05,739 INFO L225 Difference]: With dead ends: 111 [2020-11-09 17:03:05,739 INFO L226 Difference]: Without dead ends: 77 [2020-11-09 17:03:05,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 17:03:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-09 17:03:05,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-09 17:03:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-09 17:03:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 159 transitions. [2020-11-09 17:03:05,744 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 159 transitions. Word has length 17 [2020-11-09 17:03:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:03:05,744 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 159 transitions. [2020-11-09 17:03:05,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:03:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 159 transitions. [2020-11-09 17:03:05,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:03:05,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:03:05,746 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 17:03:05,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:03:05,746 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:03:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:03:05,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1741772653, now seen corresponding path program 2 times [2020-11-09 17:03:05,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:03:05,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37659691] [2020-11-09 17:03:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:03:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:03:05,817 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 17:03:05,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37659691] [2020-11-09 17:03:05,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:03:05,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:03:05,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [392102346] [2020-11-09 17:03:05,818 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:03:05,821 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:03:05,828 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 83 transitions. [2020-11-09 17:03:05,828 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:03:05,966 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:03:05,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:03:05,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:03:05,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:03:05,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:03:05,968 INFO L87 Difference]: Start difference. First operand 77 states and 159 transitions. Second operand 5 states. [2020-11-09 17:03:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:03:05,999 INFO L93 Difference]: Finished difference Result 109 states and 220 transitions. [2020-11-09 17:03:06,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:03:06,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-09 17:03:06,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:03:06,001 INFO L225 Difference]: With dead ends: 109 [2020-11-09 17:03:06,001 INFO L226 Difference]: Without dead ends: 53 [2020-11-09 17:03:06,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:03:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-09 17:03:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-09 17:03:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-09 17:03:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-11-09 17:03:06,005 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 17 [2020-11-09 17:03:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:03:06,005 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-11-09 17:03:06,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:03:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-11-09 17:03:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:03:06,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:03:06,006 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 17:03:06,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:03:06,006 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:03:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:03:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 477726785, now seen corresponding path program 3 times [2020-11-09 17:03:06,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:03:06,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287464070] [2020-11-09 17:03:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:03:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:03:06,071 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 17:03:06,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287464070] [2020-11-09 17:03:06,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:03:06,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:03:06,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1989355375] [2020-11-09 17:03:06,072 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:03:06,075 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:03:06,082 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 69 transitions. [2020-11-09 17:03:06,082 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:03:06,177 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:03:06,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:03:06,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:03:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:03:06,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:03:06,178 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 5 states. [2020-11-09 17:03:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:03:06,201 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-11-09 17:03:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:03:06,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-09 17:03:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:03:06,202 INFO L225 Difference]: With dead ends: 52 [2020-11-09 17:03:06,202 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:03:06,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:03:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:03:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:03:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:03:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:03:06,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 17:03:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:03:06,204 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:03:06,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:03:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:03:06,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:03:06,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:03:06,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:03:06 BasicIcfg [2020-11-09 17:03:06,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:03:06,210 INFO L168 Benchmark]: Toolchain (without parser) took 7253.59 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 134.5 MB in the beginning and 73.2 MB in the end (delta: 61.3 MB). Peak memory consumption was 95.2 MB. Max. memory is 8.0 GB. [2020-11-09 17:03:06,211 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 101.0 MB in the end (delta: 68.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:03:06,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.20 ms. Allocated memory is still 160.4 MB. Free memory was 133.9 MB in the beginning and 136.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:03:06,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.99 ms. Allocated memory is still 160.4 MB. Free memory was 136.7 MB in the beginning and 134.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:03:06,213 INFO L168 Benchmark]: Boogie Preprocessor took 30.76 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 133.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:03:06,214 INFO L168 Benchmark]: RCFGBuilder took 605.02 ms. Allocated memory is still 160.4 MB. Free memory was 133.1 MB in the beginning and 111.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:03:06,215 INFO L168 Benchmark]: TraceAbstraction took 5653.33 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 111.5 MB in the beginning and 73.2 MB in the end (delta: 38.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. [2020-11-09 17:03:06,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 101.0 MB in the end (delta: 68.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 881.20 ms. Allocated memory is still 160.4 MB. Free memory was 133.9 MB in the beginning and 136.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 67.99 ms. Allocated memory is still 160.4 MB. Free memory was 136.7 MB in the beginning and 134.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.76 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 133.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 605.02 ms. Allocated memory is still 160.4 MB. Free memory was 133.1 MB in the beginning and 111.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5653.33 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 111.5 MB in the beginning and 73.2 MB in the end (delta: 38.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 709 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2462 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 111 SDtfs, 71 SDslu, 136 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...