/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:51:10,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:51:10,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:51:10,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:51:10,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:51:10,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:51:10,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:51:10,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:51:10,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:51:10,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:51:10,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:51:10,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:51:10,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:51:10,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:51:10,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:51:10,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:51:10,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:51:10,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:51:10,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:51:10,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:51:10,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:51:10,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:51:10,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:51:10,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:51:10,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:51:10,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:51:10,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:51:10,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:51:10,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:51:10,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:51:10,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:51:10,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:51:10,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:51:10,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:51:10,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:51:10,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:51:10,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:51:10,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:51:10,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:51:10,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:51:10,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:51:10,708 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 [2020-10-14 23:51:10,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:51:10,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:51:10,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:51:10,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:51:10,745 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:51:10,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:51:10,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:51:10,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:51:10,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:51:10,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:51:10,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:51:10,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:51:10,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:51:10,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:51:10,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:51:10,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:51:10,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:51:10,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:51:10,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:51:10,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:51:10,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:51:10,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:51:10,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:51:10,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:51:10,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:51:10,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:51:10,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:51:10,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:51:10,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:51:10,750 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:51:11,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:51:11,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:51:11,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:51:11,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:51:11,063 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:51:11,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-10-14 23:51:11,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0babc26f8/c77dd1bc00564acfb44c492cd5cd37f4/FLAGdb228005d [2020-10-14 23:51:11,600 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:51:11,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-10-14 23:51:11,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0babc26f8/c77dd1bc00564acfb44c492cd5cd37f4/FLAGdb228005d [2020-10-14 23:51:12,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0babc26f8/c77dd1bc00564acfb44c492cd5cd37f4 [2020-10-14 23:51:12,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:51:12,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:51:12,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:51:12,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:51:12,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:51:12,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab3eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12, skipping insertion in model container [2020-10-14 23:51:12,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:51:12,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:51:12,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:51:12,300 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:51:12,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:51:12,336 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:51:12,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12 WrapperNode [2020-10-14 23:51:12,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:51:12,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:51:12,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:51:12,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:51:12,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (1/1) ... [2020-10-14 23:51:12,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:51:12,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:51:12,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:51:12,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:51:12,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (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 [2020-10-14 23:51:12,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:51:12,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:51:12,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:51:12,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:51:12,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:51:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:51:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:51:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:51:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:51:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:51:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:51:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:51:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:51:12,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:51:12,811 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 23:51:12,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:12 BoogieIcfgContainer [2020-10-14 23:51:12,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:51:12,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:51:12,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:51:12,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:51:12,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:51:12" (1/3) ... [2020-10-14 23:51:12,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1049334f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:12, skipping insertion in model container [2020-10-14 23:51:12,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:12" (2/3) ... [2020-10-14 23:51:12,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1049334f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:12, skipping insertion in model container [2020-10-14 23:51:12,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:12" (3/3) ... [2020-10-14 23:51:12,825 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-10-14 23:51:12,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:51:12,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:51:12,871 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:51:12,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:51:12,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:51:12,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:51:12,907 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:51:12,907 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:51:12,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:51:12,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:51:12,908 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:51:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-14 23:51:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:51:12,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:12,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:12,941 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:12,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1626077920, now seen corresponding path program 1 times [2020-10-14 23:51:12,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:12,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570569466] [2020-10-14 23:51:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:13,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:13,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:51:13,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 23:51:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:13,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:51:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:51:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:51:13,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:13,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:13,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:51:13,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:13,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:13,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:13,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570569466] [2020-10-14 23:51:13,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:51:13,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:51:13,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556223626] [2020-10-14 23:51:13,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:51:13,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:51:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:51:13,431 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 5 states. [2020-10-14 23:51:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:13,639 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-10-14 23:51:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:51:13,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-14 23:51:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:13,653 INFO L225 Difference]: With dead ends: 111 [2020-10-14 23:51:13,654 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:51:13,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:51:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:51:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-10-14 23:51:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:51:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-10-14 23:51:13,722 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 16 [2020-10-14 23:51:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:13,722 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-10-14 23:51:13,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:51:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-10-14 23:51:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:51:13,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:13,724 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:13,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:51:13,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1393145919, now seen corresponding path program 1 times [2020-10-14 23:51:13,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:13,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77601859] [2020-10-14 23:51:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:13,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:13,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:51:13,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:13,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 23:51:13,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:13,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:51:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:51:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:51:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:13,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:13,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:13,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:51:13,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:51:13,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:13,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:51:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:14,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:14,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:14,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:51:14,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:14,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:14,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77601859] [2020-10-14 23:51:14,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:51:14,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:51:14,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493971582] [2020-10-14 23:51:14,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:51:14,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:14,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:51:14,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:51:14,026 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 6 states. [2020-10-14 23:51:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:14,255 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2020-10-14 23:51:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:51:14,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 23:51:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:14,258 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:51:14,258 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 23:51:14,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:51:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 23:51:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-14 23:51:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 23:51:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2020-10-14 23:51:14,274 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 21 [2020-10-14 23:51:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:14,274 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2020-10-14 23:51:14,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:51:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2020-10-14 23:51:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:51:14,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:14,276 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:14,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:51:14,276 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:14,277 INFO L82 PathProgramCache]: Analyzing trace with hash 654996419, now seen corresponding path program 1 times [2020-10-14 23:51:14,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:14,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342287744] [2020-10-14 23:51:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:14,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:51:14,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:14,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 23:51:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:14,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:51:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:51:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:51:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:14,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:51:14,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:14,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:14,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:51:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:14,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:14,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:14,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:51:14,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:14,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:51:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:14,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:51:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:14,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:51:14,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342287744] [2020-10-14 23:51:14,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:51:14,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:51:14,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466989491] [2020-10-14 23:51:14,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:51:14,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:14,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:51:14,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:51:14,435 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand 5 states. [2020-10-14 23:51:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:14,544 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2020-10-14 23:51:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:51:14,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-14 23:51:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:14,546 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:51:14,546 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:51:14,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:51:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:51:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2020-10-14 23:51:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 23:51:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-10-14 23:51:14,562 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 28 [2020-10-14 23:51:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:14,562 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-10-14 23:51:14,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:51:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-10-14 23:51:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:51:14,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:14,564 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:14,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:51:14,565 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:14,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1101915893, now seen corresponding path program 1 times [2020-10-14 23:51:14,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:14,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693240188] [2020-10-14 23:51:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:51:15,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:51:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-14 23:51:15,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:51:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:51:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:51:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:15,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:51:15,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:15,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:51:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:15,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:51:15,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:51:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:15,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:15,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:15,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:15,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:15,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 23:51:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:51:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:51:15,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:15,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:51:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:15,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:51:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 23:51:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:15,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:51:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:51:15,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:15,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:51:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:15,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:15,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:15,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:15,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 23:51:15,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693240188] [2020-10-14 23:51:15,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:51:15,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:51:15,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933747217] [2020-10-14 23:51:15,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:51:15,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:51:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:51:15,487 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 6 states. [2020-10-14 23:51:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:15,645 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2020-10-14 23:51:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:51:15,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-14 23:51:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:15,650 INFO L225 Difference]: With dead ends: 74 [2020-10-14 23:51:15,650 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 23:51:15,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:51:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 23:51:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-14 23:51:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 23:51:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2020-10-14 23:51:15,665 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 50 [2020-10-14 23:51:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:15,666 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2020-10-14 23:51:15,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:51:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2020-10-14 23:51:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 23:51:15,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:15,670 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:15,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:51:15,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1725363406, now seen corresponding path program 1 times [2020-10-14 23:51:15,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:15,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324994351] [2020-10-14 23:51:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 23:51:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:51:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2643 [2020-10-14 23:51:18,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:51:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 23:51:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:51:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:51:18,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:51:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:51:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 23:51:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:51:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 23:51:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:51:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 23:51:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:51:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:51:18,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 23:51:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:18,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 23:51:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:51:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:51:18,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 23:51:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:18,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:18,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 23:51:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:51:18,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:51:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:51:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 23:51:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:51:18,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 23:51:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-14 23:51:18,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324994351] [2020-10-14 23:51:18,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:18,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:51:18,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111760058] [2020-10-14 23:51:18,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:51:18,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:18,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:51:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:51:18,512 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand 6 states. [2020-10-14 23:51:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:18,695 INFO L93 Difference]: Finished difference Result 101 states and 131 transitions. [2020-10-14 23:51:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:51:18,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-14 23:51:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:18,698 INFO L225 Difference]: With dead ends: 101 [2020-10-14 23:51:18,698 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:51:18,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:51:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:51:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-14 23:51:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 23:51:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2020-10-14 23:51:18,715 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 85 [2020-10-14 23:51:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:18,716 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2020-10-14 23:51:18,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:51:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2020-10-14 23:51:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:51:18,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:18,722 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:18,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:51:18,723 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash -702087769, now seen corresponding path program 1 times [2020-10-14 23:51:18,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:18,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648664641] [2020-10-14 23:51:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:51:18,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 23:51:18,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:51:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 23:51:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:51:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:51:18,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:51:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:51:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 23:51:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:51:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 23:51:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:51:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 23:51:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:51:18,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 23:51:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:18,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 23:51:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:18,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:18,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 23:51:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 23:51:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:18,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:18,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:18,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:18,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:18,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 23:51:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:51:19,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 23:51:19,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648664641] [2020-10-14 23:51:19,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:51:19,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:51:19,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098500014] [2020-10-14 23:51:19,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:51:19,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:19,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:51:19,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:51:19,029 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 6 states. [2020-10-14 23:51:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:19,133 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-10-14 23:51:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:51:19,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-14 23:51:19,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:19,136 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:51:19,136 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:51:19,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:51:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:51:19,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-10-14 23:51:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:51:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-10-14 23:51:19,164 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 86 [2020-10-14 23:51:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:19,165 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-10-14 23:51:19,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:51:19,165 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-10-14 23:51:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 23:51:19,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:19,173 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:19,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:51:19,174 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:19,174 INFO L82 PathProgramCache]: Analyzing trace with hash 58209754, now seen corresponding path program 1 times [2020-10-14 23:51:19,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:19,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387538679] [2020-10-14 23:51:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 23:51:19,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 23:51:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:51:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 23:51:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:51:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:51:19,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:19,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:51:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:51:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:51:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:19,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 23:51:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:19,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:51:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:51:19,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 23:51:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:19,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:51:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:19,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 23:51:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:19,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 23:51:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:19,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 23:51:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:19,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:19,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 23:51:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 23:51:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:19,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 23:51:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:51:19,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 23:51:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:51:19,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:51:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:51:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:51:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-14 23:51:19,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387538679] [2020-10-14 23:51:19,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:51:19,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:51:19,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109812503] [2020-10-14 23:51:19,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:51:19,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:19,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:51:19,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:51:19,525 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand 6 states. [2020-10-14 23:51:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:19,613 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2020-10-14 23:51:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:51:19,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-14 23:51:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:19,615 INFO L225 Difference]: With dead ends: 78 [2020-10-14 23:51:19,615 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:51:19,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:51:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:51:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:51:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:51:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:51:19,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2020-10-14 23:51:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:19,618 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:51:19,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:51:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:51:19,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:51:19,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:51:19,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:51:20,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:51:20,120 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:51:20,120 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:51:20,120 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:51:20,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:51:20,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:51:20,121 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:51:20,121 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 23:51:20,121 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:51:20,121 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:51:20,122 INFO L264 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,123 INFO L264 CegarLoopResult]: At program point L60-1(line 60) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,123 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 72) no Hoare annotation was computed. [2020-10-14 23:51:20,123 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= 0 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,123 INFO L264 CegarLoopResult]: At program point L52-1(line 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= 0 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,124 INFO L264 CegarLoopResult]: At program point L36-1(lines 35 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (or (= (+ main_~cp~0 1) main_~urilen~0) (<= (+ main_~cp~0 2) main_~urilen~0))) [2020-10-14 23:51:20,124 INFO L264 CegarLoopResult]: At program point L36-2(lines 36 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-10-14 23:51:20,125 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,125 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,125 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,125 INFO L271 CegarLoopResult]: At program point L70(lines 14 72) the Hoare annotation is: true [2020-10-14 23:51:20,126 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-10-14 23:51:20,126 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,126 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-14 23:51:20,126 INFO L264 CegarLoopResult]: At program point L54-1(lines 53 66) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= 0 main_~c~0) (or (= (+ main_~cp~0 1) main_~urilen~0) (<= (+ main_~cp~0 2) main_~urilen~0))) [2020-10-14 23:51:20,126 INFO L268 CegarLoopResult]: For program point L46(lines 33 69) no Hoare annotation was computed. [2020-10-14 23:51:20,126 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 72) no Hoare annotation was computed. [2020-10-14 23:51:20,127 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,127 INFO L264 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,127 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 72) the Hoare annotation is: true [2020-10-14 23:51:20,127 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-14 23:51:20,127 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-10-14 23:51:20,127 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-10-14 23:51:20,127 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-10-14 23:51:20,128 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 2) main_~tokenlen~0) (<= 0 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,128 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-14 23:51:20,128 INFO L264 CegarLoopResult]: At program point L56-1(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 2) main_~tokenlen~0) (<= 0 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2020-10-14 23:51:20,128 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L24-1(lines 14 72) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L33(lines 33 69) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L58(lines 58 64) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L25(lines 14 72) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 64) no Hoare annotation was computed. [2020-10-14 23:51:20,129 INFO L268 CegarLoopResult]: For program point L50(lines 50 68) no Hoare annotation was computed. [2020-10-14 23:51:20,130 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (or (= (+ main_~cp~0 1) main_~urilen~0) (<= (+ main_~cp~0 2) main_~urilen~0))) [2020-10-14 23:51:20,130 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-10-14 23:51:20,130 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-10-14 23:51:20,130 INFO L268 CegarLoopResult]: For program point L26(lines 14 72) no Hoare annotation was computed. [2020-10-14 23:51:20,131 INFO L268 CegarLoopResult]: For program point L43(lines 33 69) no Hoare annotation was computed. [2020-10-14 23:51:20,131 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 23:51:20,131 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 23:51:20,131 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 23:51:20,131 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 23:51:20,131 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 23:51:20,131 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 23:51:20,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:51:20 BoogieIcfgContainer [2020-10-14 23:51:20,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:51:20,170 INFO L168 Benchmark]: Toolchain (without parser) took 8144.55 ms. Allocated memory was 145.8 MB in the beginning and 321.4 MB in the end (delta: 175.6 MB). Free memory was 101.8 MB in the beginning and 213.4 MB in the end (delta: -111.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:51:20,179 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:51:20,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.94 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:51:20,181 INFO L168 Benchmark]: Boogie Preprocessor took 123.89 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.3 MB in the beginning and 180.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:51:20,182 INFO L168 Benchmark]: RCFGBuilder took 354.48 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.9 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:51:20,183 INFO L168 Benchmark]: TraceAbstraction took 7345.92 ms. Allocated memory was 201.9 MB in the beginning and 321.4 MB in the end (delta: 119.5 MB). Free memory was 160.9 MB in the beginning and 213.4 MB in the end (delta: -52.5 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:51:20,193 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.94 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.89 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.3 MB in the beginning and 180.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.48 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.9 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7345.92 ms. Allocated memory was 201.9 MB in the beginning and 321.4 MB in the end (delta: 119.5 MB). Free memory was 160.9 MB in the beginning and 213.4 MB in the end (delta: -52.5 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (0 < scheme + 1 && 1 <= cp) && (cp + 1 == urilen || cp + 2 <= urilen) - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((0 < scheme + 1 && 1 <= cp) && 0 <= c) && (cp + 1 == urilen || cp + 2 <= urilen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 7, TraceHistogramMax: 14, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 436 SDtfs, 99 SDslu, 1083 SDs, 0 SdLazy, 501 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 76 PreInvPairs, 106 NumberOfFragments, 351 HoareAnnotationTreeSize, 76 FomulaSimplifications, 488 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 160 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 377 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 40066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 993/996 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...