/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:29:18,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:29:18,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:29:18,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:29:18,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:29:18,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:29:18,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:29:18,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:29:18,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:29:18,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:29:18,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:29:18,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:29:18,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:29:18,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:29:18,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:29:18,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:29:18,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:29:18,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:29:18,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:29:18,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:29:18,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:29:18,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:29:18,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:29:18,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:29:18,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:29:18,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:29:18,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:29:18,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:29:18,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:29:18,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:29:18,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:29:18,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:29:18,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:29:18,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:29:18,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:29:18,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:29:18,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:29:18,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:29:18,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:29:18,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:29:18,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:29:18,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:29:18,874 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:29:18,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:29:18,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:29:18,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:29:18,877 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:29:18,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:29:18,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:29:18,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:29:18,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:29:18,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:29:18,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:29:18,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:29:18,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:29:18,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:29:18,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:29:18,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:29:18,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:29:18,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:29:18,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:29:18,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:29:18,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:29:18,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:29:18,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:29:18,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:29:18,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:29:18,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:29:18,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:29:18,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:29:18,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:29:18,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:29:19,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:29:19,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:29:19,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:29:19,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:29:19,391 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:29:19,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-24 20:29:19,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8674341c/36884f3e8918458dae468221afbd188b/FLAGf50f6a425 [2020-09-24 20:29:19,933 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:29:19,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-24 20:29:19,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8674341c/36884f3e8918458dae468221afbd188b/FLAGf50f6a425 [2020-09-24 20:29:20,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8674341c/36884f3e8918458dae468221afbd188b [2020-09-24 20:29:20,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:29:20,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:29:20,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:20,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:29:20,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:29:20,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20, skipping insertion in model container [2020-09-24 20:29:20,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:29:20,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:29:20,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:20,675 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:29:20,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:20,722 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:29:20,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20 WrapperNode [2020-09-24 20:29:20,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:20,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:29:20,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:29:20,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:29:20,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:29:20,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:29:20,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:29:20,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:29:20,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:29:20,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:29:20,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:29:20,944 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-24 20:29:20,944 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-24 20:29:20,945 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 20:29:20,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:29:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:29:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:29:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:29:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 20:29:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:29:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-24 20:29:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:29:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:29:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:29:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:29:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:29:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:29:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:29:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:29:21,294 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:29:21,294 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:29:21,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:21 BoogieIcfgContainer [2020-09-24 20:29:21,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:29:21,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:29:21,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:29:21,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:29:21,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:29:20" (1/3) ... [2020-09-24 20:29:21,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8c98ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:21, skipping insertion in model container [2020-09-24 20:29:21,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20" (2/3) ... [2020-09-24 20:29:21,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8c98ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:21, skipping insertion in model container [2020-09-24 20:29:21,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:21" (3/3) ... [2020-09-24 20:29:21,309 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-09-24 20:29:21,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:29:21,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:29:21,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:29:21,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:29:21,408 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:29:21,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:29:21,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:29:21,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:29:21,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:29:21,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:29:21,409 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:29:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-24 20:29:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 20:29:21,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:21,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:21,445 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:21,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2026025413, now seen corresponding path program 1 times [2020-09-24 20:29:21,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:21,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318714806] [2020-09-24 20:29:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 20:29:23,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:29:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1633 [2020-09-24 20:29:23,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:29:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 20:29:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:29:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:29:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:29:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:29:23,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:29:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:23,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:29:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 20:29:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:29:23,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:29:23,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:29:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:29:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:29:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:23,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 20:29:23,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:29:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:29:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 20:29:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:23,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 20:29:23,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:29:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:29:23,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 20:29:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:29:23,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:29:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:29:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 20:29:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:23,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:29:23,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:29:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:29:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:29:23,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318714806] [2020-09-24 20:29:23,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:29:23,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:29:23,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859303750] [2020-09-24 20:29:24,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:29:24,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:24,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:29:24,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:29:24,024 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 12 states. [2020-09-24 20:29:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:26,334 INFO L93 Difference]: Finished difference Result 207 states and 237 transitions. [2020-09-24 20:29:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:29:26,337 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-09-24 20:29:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:26,352 INFO L225 Difference]: With dead ends: 207 [2020-09-24 20:29:26,352 INFO L226 Difference]: Without dead ends: 151 [2020-09-24 20:29:26,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:29:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-24 20:29:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 97. [2020-09-24 20:29:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-24 20:29:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2020-09-24 20:29:26,445 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 83 [2020-09-24 20:29:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:26,446 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2020-09-24 20:29:26,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:29:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2020-09-24 20:29:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 20:29:26,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:26,462 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:26,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:29:26,463 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:26,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:26,463 INFO L82 PathProgramCache]: Analyzing trace with hash 114916730, now seen corresponding path program 1 times [2020-09-24 20:29:26,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:26,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170139774] [2020-09-24 20:29:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 20:29:31,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:29:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:29:31,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:29:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 20:29:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:29:31,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:29:31,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:29:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:31,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:29:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:29:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:29:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 20:29:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:31,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:29:31,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:29:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:29:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 20:29:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:31,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:29:31,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:29:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:29:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 20:29:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:29:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:29:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:29:31,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170139774] [2020-09-24 20:29:31,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:29:31,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:29:31,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671667104] [2020-09-24 20:29:31,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:29:31,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:31,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:29:31,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:29:31,906 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 14 states. [2020-09-24 20:29:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:34,108 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2020-09-24 20:29:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:29:34,109 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-09-24 20:29:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:34,112 INFO L225 Difference]: With dead ends: 184 [2020-09-24 20:29:34,112 INFO L226 Difference]: Without dead ends: 170 [2020-09-24 20:29:34,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-09-24 20:29:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-24 20:29:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 125. [2020-09-24 20:29:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-24 20:29:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2020-09-24 20:29:34,154 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 85 [2020-09-24 20:29:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:34,155 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2020-09-24 20:29:34,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:29:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2020-09-24 20:29:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 20:29:34,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:34,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:34,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:29:34,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:34,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1742641702, now seen corresponding path program 2 times [2020-09-24 20:29:34,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:34,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235512239] [2020-09-24 20:29:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:38,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:38,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 20:29:38,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:29:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4043 [2020-09-24 20:29:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:29:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 20:29:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:29:38,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:38,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:38,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:38,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:29:38,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:29:38,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 20:29:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:38,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:29:38,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:29:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:29:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:38,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:38,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:29:38,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:38,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:29:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 20:29:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:38,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:38,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:38,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:29:38,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:29:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:29:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:38,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 20:29:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:38,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:38,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:29:38,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:29:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:29:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 20:29:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:38,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:38,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:38,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:29:38,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:29:38,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:38,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:29:38,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235512239] [2020-09-24 20:29:38,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:38,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 20:29:38,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134897484] [2020-09-24 20:29:38,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:29:38,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:29:38,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:29:38,683 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand 16 states. [2020-09-24 20:29:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:41,699 INFO L93 Difference]: Finished difference Result 276 states and 299 transitions. [2020-09-24 20:29:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 20:29:41,699 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 85 [2020-09-24 20:29:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:41,706 INFO L225 Difference]: With dead ends: 276 [2020-09-24 20:29:41,706 INFO L226 Difference]: Without dead ends: 262 [2020-09-24 20:29:41,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 20:29:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-24 20:29:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 128. [2020-09-24 20:29:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-24 20:29:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2020-09-24 20:29:41,729 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 85 [2020-09-24 20:29:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:41,730 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2020-09-24 20:29:41,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:29:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2020-09-24 20:29:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 20:29:41,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:41,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:41,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:29:41,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:41,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2022406921, now seen corresponding path program 1 times [2020-09-24 20:29:41,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:41,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83680083] [2020-09-24 20:29:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:29:41,757 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:29:41,757 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:29:41,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:29:41,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:29:41 BoogieIcfgContainer [2020-09-24 20:29:41,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:29:41,791 INFO L168 Benchmark]: Toolchain (without parser) took 21482.09 ms. Allocated memory was 140.0 MB in the beginning and 380.6 MB in the end (delta: 240.6 MB). Free memory was 103.1 MB in the beginning and 276.4 MB in the end (delta: -173.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:41,792 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:29:41,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.01 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:41,794 INFO L168 Benchmark]: Boogie Preprocessor took 135.74 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:41,794 INFO L168 Benchmark]: RCFGBuilder took 439.73 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 157.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:41,795 INFO L168 Benchmark]: TraceAbstraction took 20486.02 ms. Allocated memory was 202.9 MB in the beginning and 380.6 MB in the end (delta: 177.7 MB). Free memory was 157.4 MB in the beginning and 276.4 MB in the end (delta: -119.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:41,799 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 411.01 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.74 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 439.73 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 157.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20486.02 ms. Allocated memory was 202.9 MB in the beginning and 380.6 MB in the end (delta: 177.7 MB). Free memory was 157.4 MB in the beginning and 276.4 MB in the end (delta: -119.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; [L32] CALL init() [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.3s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 292 SDtfs, 859 SDslu, 197 SDs, 0 SdLazy, 3743 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=3, 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, 3 MinimizatonAttempts, 233 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 250 ConstructedInterpolants, 0 QuantifiedInterpolants, 76140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 44/59 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 incorrect! Received shutdown request...