/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:17:40,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:17:40,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:17:40,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:17:40,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:17:40,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:17:40,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:17:40,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:17:40,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:17:40,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:17:40,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:17:40,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:17:40,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:17:40,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:17:40,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:17:40,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:17:40,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:17:40,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:17:40,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:17:40,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:17:40,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:17:40,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:17:40,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:17:40,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:17:40,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:17:40,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:17:40,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:17:40,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:17:40,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:17:40,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:17:40,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:17:40,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:17:40,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:17:40,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:17:40,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:17:40,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:17:40,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:17:40,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:17:40,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:17:40,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:17:40,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:17:40,859 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 04:17:40,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:17:40,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:17:40,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:17:40,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:17:40,904 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:17:40,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:17:40,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:17:40,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:17:40,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:17:40,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:17:40,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:17:40,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:17:40,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:17:40,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:17:40,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:17:40,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:17:40,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:17:40,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:17:40,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:17:40,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:17:40,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:17:40,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:17:40,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:17:40,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:17:40,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:17:40,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:17:40,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:17:40,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:17:40,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:17:40,910 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:17:41,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:17:41,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:17:41,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:17:41,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:17:41,401 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:17:41,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-25 04:17:41,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7914d1511/ad38dede8e9345278d76d0bd2098d6bf/FLAG66e169e5f [2020-09-25 04:17:41,988 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:17:41,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-25 04:17:41,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7914d1511/ad38dede8e9345278d76d0bd2098d6bf/FLAG66e169e5f [2020-09-25 04:17:42,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7914d1511/ad38dede8e9345278d76d0bd2098d6bf [2020-09-25 04:17:42,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:17:42,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:17:42,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:42,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:17:42,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:17:42,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42, skipping insertion in model container [2020-09-25 04:17:42,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:17:42,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:17:42,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:42,619 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:17:42,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:42,649 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:17:42,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42 WrapperNode [2020-09-25 04:17:42,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:42,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:17:42,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:17:42,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:17:42,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (1/1) ... [2020-09-25 04:17:42,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:17:42,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:17:42,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:17:42,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:17:42,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (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 04:17:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:17:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:17:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 04:17:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:17:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:17:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:17:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 04:17:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:17:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:17:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:17:43,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:17:43,089 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:17:43,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:43 BoogieIcfgContainer [2020-09-25 04:17:43,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:17:43,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:17:43,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:17:43,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:17:43,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:17:42" (1/3) ... [2020-09-25 04:17:43,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f9a88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:43, skipping insertion in model container [2020-09-25 04:17:43,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:42" (2/3) ... [2020-09-25 04:17:43,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f9a88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:43, skipping insertion in model container [2020-09-25 04:17:43,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:43" (3/3) ... [2020-09-25 04:17:43,119 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-09-25 04:17:43,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:17:43,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:17:43,188 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:17:43,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:17:43,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:17:43,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:17:43,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:17:43,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:17:43,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:17:43,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:17:43,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:17:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 04:17:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 04:17:43,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:43,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:43,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-09-25 04:17:43,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:43,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609363507] [2020-09-25 04:17:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:43,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 04:17:43,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:43,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 04:17:43,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:43,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:17:43,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:17:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:43,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:43,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:43,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:43,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:43,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:43,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:17:43,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:43,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:17:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:17:43,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609363507] [2020-09-25 04:17:43,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:43,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:17:43,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832847498] [2020-09-25 04:17:43,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:43,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:43,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:43,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:43,747 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-25 04:17:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:43,831 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-09-25 04:17:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:17:43,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 04:17:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:43,847 INFO L225 Difference]: With dead ends: 45 [2020-09-25 04:17:43,847 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 04:17:43,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 04:17:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 04:17:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 04:17:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 04:17:43,903 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-25 04:17:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:43,903 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 04:17:43,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 04:17:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 04:17:43,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:43,906 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:17:43,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:17:43,907 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-09-25 04:17:43,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:43,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933239610] [2020-09-25 04:17:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:43,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 04:17:44,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 04:17:44,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:17:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:17:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:44,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:44,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:17:44,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 04:17:44,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:17:44,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:17:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:44,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:17:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:17:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:17:44,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933239610] [2020-09-25 04:17:44,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:44,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:17:44,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275228993] [2020-09-25 04:17:44,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:17:44,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:44,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:17:44,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:44,365 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-09-25 04:17:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:44,440 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-25 04:17:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:17:44,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 04:17:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:44,442 INFO L225 Difference]: With dead ends: 37 [2020-09-25 04:17:44,442 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 04:17:44,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:17:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 04:17:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 04:17:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 04:17:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-25 04:17:44,450 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-09-25 04:17:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:44,450 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-25 04:17:44,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:17:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-25 04:17:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:17:44,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:44,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:44,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:17:44,453 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:44,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-09-25 04:17:44,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:44,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542259215] [2020-09-25 04:17:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:17:44,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 04:17:44,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 04:17:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:17:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:44,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:17:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:17:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 04:17:44,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:17:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:17:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:17:44,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 04:17:44,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:17:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:17:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:17:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:17:44,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:17:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:17:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 04:17:45,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542259215] [2020-09-25 04:17:45,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:45,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:17:45,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126548009] [2020-09-25 04:17:45,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:17:45,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:45,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:17:45,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:17:45,022 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-09-25 04:17:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:45,134 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 04:17:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:17:45,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 04:17:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:45,136 INFO L225 Difference]: With dead ends: 31 [2020-09-25 04:17:45,136 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:17:45,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:17:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:17:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:17:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:17:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:17:45,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-09-25 04:17:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:45,141 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:17:45,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:17:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:17:45,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:17:45,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:17:45,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:17:45,181 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 04:17:45,181 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:17:45,181 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-09-25 04:17:45,182 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-09-25 04:17:45,182 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-09-25 04:17:45,182 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-25 04:17:45,182 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,182 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 04:17:45,183 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,183 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 04:17:45,183 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,183 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:17:45,183 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:17:45,184 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:17:45,184 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:17:45,184 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 04:17:45,184 INFO L268 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-09-25 04:17:45,185 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-09-25 04:17:45,185 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-09-25 04:17:45,185 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 04:17:45,185 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-09-25 04:17:45,185 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 04:17:45,185 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 04:17:45,186 INFO L268 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-09-25 04:17:45,186 INFO L268 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-09-25 04:17:45,186 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 04:17:45,186 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 04:17:45,186 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2020-09-25 04:17:45,187 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2020-09-25 04:17:45,187 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 04:17:45,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:17:45 BoogieIcfgContainer [2020-09-25 04:17:45,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:17:45,206 INFO L168 Benchmark]: Toolchain (without parser) took 2844.24 ms. Allocated memory was 138.9 MB in the beginning and 234.4 MB in the end (delta: 95.4 MB). Free memory was 100.9 MB in the beginning and 151.5 MB in the end (delta: -50.6 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,207 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:17:45,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.43 ms. Allocated memory is still 138.9 MB. Free memory was 100.3 MB in the beginning and 90.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,211 INFO L168 Benchmark]: Boogie Preprocessor took 27.47 ms. Allocated memory is still 138.9 MB. Free memory was 90.9 MB in the beginning and 89.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,213 INFO L168 Benchmark]: RCFGBuilder took 420.24 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 168.6 MB in the end (delta: -79.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,222 INFO L168 Benchmark]: TraceAbstraction took 2095.16 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 167.9 MB in the beginning and 151.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.43 ms. Allocated memory is still 138.9 MB. Free memory was 100.3 MB in the beginning and 90.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.47 ms. Allocated memory is still 138.9 MB. Free memory was 90.9 MB in the beginning and 89.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.24 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 168.6 MB in the end (delta: -79.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2095.16 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 167.9 MB in the beginning and 151.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 9 SDslu, 301 SDs, 0 SdLazy, 79 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 4384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 14/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...