/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 [2020-09-25 05:31:48,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:31:48,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:31:48,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:31:48,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:31:48,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:31:48,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:31:48,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:31:48,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:31:48,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:31:48,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:31:48,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:31:48,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:31:48,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:31:48,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:31:48,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:31:48,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:31:48,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:31:48,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:31:48,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:31:48,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:31:48,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:31:48,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:31:48,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:31:48,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:31:48,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:31:48,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:31:48,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:31:48,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:31:48,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:31:48,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:31:48,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:31:48,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:31:48,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:31:48,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:31:48,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:31:48,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:31:48,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:31:48,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:31:48,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:31:48,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:31:48,755 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 [2020-09-25 05:31:48,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:31:48,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:31:48,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:31:48,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:31:48,801 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:31:48,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:31:48,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:31:48,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:31:48,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:31:48,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:31:48,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:31:48,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:31:48,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:31:48,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:31:48,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:31:48,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:31:48,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:31:48,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:31:48,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:31:48,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:31:48,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:31:48,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:31:48,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:31:48,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:31:48,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:31:48,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:31:48,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:31:48,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:31:48,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:31:48,807 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:31:49,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:31:49,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:31:49,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:31:49,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:31:49,400 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:31:49,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-25 05:31:49,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af5046e0/8f04c3a5017b459c9bac94f3d0895c94/FLAGe508456fb [2020-09-25 05:31:50,082 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:31:50,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-25 05:31:50,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af5046e0/8f04c3a5017b459c9bac94f3d0895c94/FLAGe508456fb [2020-09-25 05:31:50,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af5046e0/8f04c3a5017b459c9bac94f3d0895c94 [2020-09-25 05:31:50,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:31:50,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:31:50,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:50,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:31:50,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:31:50,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,430 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 25.09 05:31:50, skipping insertion in model container [2020-09-25 05:31:50,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:31:50,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:31:50,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:50,746 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:31:50,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:50,786 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:31:50,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50 WrapperNode [2020-09-25 05:31:50,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:50,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:31:50,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:31:50,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:31:50,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (1/1) ... [2020-09-25 05:31:50,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:31:50,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:31:50,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:31:50,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:31:50,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (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 [2020-09-25 05:31:50,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:31:50,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:31:50,991 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 05:31:50,992 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-25 05:31:50,992 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 05:31:50,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:31:50,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:31:50,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:31:50,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 05:31:50,993 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 05:31:50,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:31:50,993 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-25 05:31:50,993 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 05:31:50,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:31:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:31:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:31:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:31:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 05:31:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:31:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:31:51,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:31:51,400 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:31:51,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:51 BoogieIcfgContainer [2020-09-25 05:31:51,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:31:51,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:31:51,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:31:51,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:31:51,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:31:50" (1/3) ... [2020-09-25 05:31:51,415 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 25.09 05:31:51, skipping insertion in model container [2020-09-25 05:31:51,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:50" (2/3) ... [2020-09-25 05:31:51,416 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 25.09 05:31:51, skipping insertion in model container [2020-09-25 05:31:51,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:51" (3/3) ... [2020-09-25 05:31:51,418 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-09-25 05:31:51,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:31:51,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:31:51,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:31:51,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:31:51,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:31:51,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:31:51,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:31:51,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:31:51,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:31:51,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:31:51,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:31:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-25 05:31:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 05:31:51,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:51,531 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] [2020-09-25 05:31:51,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:51,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2026025413, now seen corresponding path program 1 times [2020-09-25 05:31:51,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:51,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318714806] [2020-09-25 05:31:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:31:53,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:31:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-09-25 05:31:53,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 05:31:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:31:53,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:53,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:31:53,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:31:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 05:31:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:31:53,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:31:53,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:53,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:31:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:53,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:31:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:53,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 05:31:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:31:53,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:53,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:31:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:53,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:31:53,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:53,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 05:31:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:53,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:31:53,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:31:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:31:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 05:31:53,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318714806] [2020-09-25 05:31:53,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:53,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:31:53,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408900114] [2020-09-25 05:31:53,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:31:53,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:53,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:31:53,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:31:53,882 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-25 05:31:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:54,327 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-09-25 05:31:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:31:54,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-09-25 05:31:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:54,350 INFO L225 Difference]: With dead ends: 107 [2020-09-25 05:31:54,351 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 05:31:54,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:31:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 05:31:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-25 05:31:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 05:31:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-09-25 05:31:54,474 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 83 [2020-09-25 05:31:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:54,477 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-09-25 05:31:54,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:31:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-09-25 05:31:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 05:31:54,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:54,483 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, 1, 1] [2020-09-25 05:31:54,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:31:54,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash 177245466, now seen corresponding path program 1 times [2020-09-25 05:31:54,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:54,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401526617] [2020-09-25 05:31:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:55,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:59,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 05:31:59,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:31:59,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:59,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 05:31:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:31:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:59,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:59,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:31:59,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:59,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:59,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 05:31:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:59,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:31:59,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:31:59,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:59,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:59,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:59,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:31:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:59,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:59,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:59,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:59,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 05:31:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:59,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:59,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:31:59,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:59,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:31:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:59,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:31:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 05:31:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:59,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:59,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:31:59,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:59,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:31:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 05:31:59,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401526617] [2020-09-25 05:31:59,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:59,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:31:59,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858580271] [2020-09-25 05:31:59,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:31:59,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:59,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:31:59,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:31:59,691 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 5 states. [2020-09-25 05:32:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:00,054 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-09-25 05:32:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:32:00,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-25 05:32:00,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:00,058 INFO L225 Difference]: With dead ends: 106 [2020-09-25 05:32:00,058 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 05:32:00,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 05:32:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-25 05:32:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 05:32:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-09-25 05:32:00,073 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 85 [2020-09-25 05:32:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:00,073 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-09-25 05:32:00,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:32:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-09-25 05:32:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 05:32:00,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:00,076 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, 1, 1, 1, 1] [2020-09-25 05:32:00,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:32:00,076 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash 679818391, now seen corresponding path program 1 times [2020-09-25 05:32:00,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:00,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822895249] [2020-09-25 05:32:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:32:04,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:04,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3954 [2020-09-25 05:32:04,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:32:04,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:32:04,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:32:04,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:32:04,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:32:04,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:04,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 05:32:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:32:04,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:32:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:32:04,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:32:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 05:32:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:04,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:32:04,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:32:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:32:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:32:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:04,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:32:04,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:32:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 05:32:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:04,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:32:04,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:32:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:32:04,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822895249] [2020-09-25 05:32:04,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:04,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:32:04,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984215254] [2020-09-25 05:32:04,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:32:04,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:04,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:32:04,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:32:04,495 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 14 states. [2020-09-25 05:32:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:06,196 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2020-09-25 05:32:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:32:06,197 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-25 05:32:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:06,202 INFO L225 Difference]: With dead ends: 167 [2020-09-25 05:32:06,202 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 05:32:06,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-09-25 05:32:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 05:32:06,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 108. [2020-09-25 05:32:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 05:32:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-09-25 05:32:06,222 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 87 [2020-09-25 05:32:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:06,223 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-09-25 05:32:06,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:32:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-09-25 05:32:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 05:32:06,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:06,225 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] [2020-09-25 05:32:06,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:32:06,226 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:06,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2022406921, now seen corresponding path program 1 times [2020-09-25 05:32:06,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:06,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962381030] [2020-09-25 05:32:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:32:06,254 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:32:06,254 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:32:06,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:32:06,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:32:06 BoogieIcfgContainer [2020-09-25 05:32:06,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:32:06,288 INFO L168 Benchmark]: Toolchain (without parser) took 15871.87 ms. Allocated memory was 141.6 MB in the beginning and 316.1 MB in the end (delta: 174.6 MB). Free memory was 104.6 MB in the beginning and 122.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 156.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:06,289 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:32:06,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.34 ms. Allocated memory is still 141.6 MB. Free memory was 103.9 MB in the beginning and 93.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:06,291 INFO L168 Benchmark]: Boogie Preprocessor took 125.31 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 93.4 MB in the beginning and 179.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:06,291 INFO L168 Benchmark]: RCFGBuilder took 494.57 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 156.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:06,292 INFO L168 Benchmark]: TraceAbstraction took 14873.90 ms. Allocated memory was 201.9 MB in the beginning and 316.1 MB in the end (delta: 114.3 MB). Free memory was 156.0 MB in the beginning and 122.8 MB in the end (delta: 33.2 MB). Peak memory consumption was 147.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:06,296 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.34 ms. Allocated memory is still 141.6 MB. Free memory was 103.9 MB in the beginning and 93.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.31 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 93.4 MB in the beginning and 179.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.57 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 156.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14873.90 ms. Allocated memory was 201.9 MB in the beginning and 316.1 MB in the end (delta: 114.3 MB). Free memory was 156.0 MB in the beginning and 122.8 MB in the end (delta: 33.2 MB). Peak memory consumption was 147.5 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: 14.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 395 SDslu, 76 SDs, 0 SdLazy, 1267 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred 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, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 45528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 58/63 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...