/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:18,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:18,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:18,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:18,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:18,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:18,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:18,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:18,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:18,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:18,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:18,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:18,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:18,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:18,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:18,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:18,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:18,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:18,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:18,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:18,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:18,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:18,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:18,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:18,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:18,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:18,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:18,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:18,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:18,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:18,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:18,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:18,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:18,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:18,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:18,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:18,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:18,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:18,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:18,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:18,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:18,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:20:18,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:18,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:18,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:18,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:18,163 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:18,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:18,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:18,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:18,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:18,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:18,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:18,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:18,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:18,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:18,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:18,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:18,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:18,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:18,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:18,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:18,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:18,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:18,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:18,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:18,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:18,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:18,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:18,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:18,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:18,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:20:18,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:18,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:18,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:18,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:18,702 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:18,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 11:20:18,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0f40a7a8/84f801742d4d46d4845ca11c257d498d/FLAGc1ec6e583 [2020-09-25 11:20:19,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:19,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 11:20:19,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0f40a7a8/84f801742d4d46d4845ca11c257d498d/FLAGc1ec6e583 [2020-09-25 11:20:19,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0f40a7a8/84f801742d4d46d4845ca11c257d498d [2020-09-25 11:20:19,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:19,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:19,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:19,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:19,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:19,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:19" (1/1) ... [2020-09-25 11:20:19,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:19, skipping insertion in model container [2020-09-25 11:20:19,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:19" (1/1) ... [2020-09-25 11:20:19,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:19,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:20,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:20,461 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:20,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:20,655 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:20,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20 WrapperNode [2020-09-25 11:20:20,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:20,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:20,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:20,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:20,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... [2020-09-25 11:20:20,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... [2020-09-25 11:20:20,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... [2020-09-25 11:20:20,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... [2020-09-25 11:20:20,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... [2020-09-25 11:20:20,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... [2020-09-25 11:20:20,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... [2020-09-25 11:20:20,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:20,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:20,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:20,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:20,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:22,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:22,628 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:22,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:22 BoogieIcfgContainer [2020-09-25 11:20:22,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:22,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:22,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:22,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:22,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:19" (1/3) ... [2020-09-25 11:20:22,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c192709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:22, skipping insertion in model container [2020-09-25 11:20:22,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:20" (2/3) ... [2020-09-25 11:20:22,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c192709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:22, skipping insertion in model container [2020-09-25 11:20:22,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:22" (3/3) ... [2020-09-25 11:20:22,651 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 11:20:22,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:22,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:22,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:22,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:22,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:22,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:22,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:22,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:22,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:22,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:22,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 11:20:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 11:20:22,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:22,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:22,806 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:22,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 11:20:22,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:22,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130991120] [2020-09-25 11:20:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:23,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 11:20:23,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 11:20:23,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:23,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:20:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:23,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:23,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:20:23,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:23,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:23,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130991120] [2020-09-25 11:20:23,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:23,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:20:23,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782443983] [2020-09-25 11:20:23,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:23,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:23,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:23,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:23,986 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 11:20:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:27,732 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 11:20:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:20:27,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-25 11:20:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:27,765 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 11:20:27,765 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 11:20:27,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 11:20:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 11:20:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 11:20:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 11:20:27,917 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 53 [2020-09-25 11:20:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:27,918 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 11:20:27,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 11:20:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 11:20:27,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:27,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:27,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:27,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:27,930 INFO L82 PathProgramCache]: Analyzing trace with hash -815962305, now seen corresponding path program 1 times [2020-09-25 11:20:27,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:27,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273388579] [2020-09-25 11:20:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:32,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 11:20:32,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:32,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:20:32,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:32,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 11:20:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:33,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:33,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:33,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:20:33,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:33,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:20:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:33,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:33,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:20:33,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 11:20:33,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:33,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 11:20:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:33,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273388579] [2020-09-25 11:20:33,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:33,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:33,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521836976] [2020-09-25 11:20:33,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:33,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:33,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:33,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:33,434 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 7 states. [2020-09-25 11:20:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:36,022 INFO L93 Difference]: Finished difference Result 2508 states and 3502 transitions. [2020-09-25 11:20:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:36,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 11:20:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:36,038 INFO L225 Difference]: With dead ends: 2508 [2020-09-25 11:20:36,038 INFO L226 Difference]: Without dead ends: 1528 [2020-09-25 11:20:36,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-09-25 11:20:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1088. [2020-09-25 11:20:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-09-25 11:20:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1361 transitions. [2020-09-25 11:20:36,138 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1361 transitions. Word has length 137 [2020-09-25 11:20:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:36,139 INFO L479 AbstractCegarLoop]: Abstraction has 1088 states and 1361 transitions. [2020-09-25 11:20:36,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1361 transitions. [2020-09-25 11:20:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 11:20:36,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:36,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:36,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:36,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:36,148 INFO L82 PathProgramCache]: Analyzing trace with hash 244823419, now seen corresponding path program 1 times [2020-09-25 11:20:36,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:36,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086280458] [2020-09-25 11:20:36,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:20:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:20:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:20:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:20:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:20:41,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 11:20:41,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:41,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 11:20:41,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:41,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086280458] [2020-09-25 11:20:41,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:41,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:41,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202432712] [2020-09-25 11:20:41,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:41,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:41,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:41,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:41,679 INFO L87 Difference]: Start difference. First operand 1088 states and 1361 transitions. Second operand 7 states. [2020-09-25 11:20:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:45,267 INFO L93 Difference]: Finished difference Result 2684 states and 3410 transitions. [2020-09-25 11:20:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:45,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-09-25 11:20:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:45,284 INFO L225 Difference]: With dead ends: 2684 [2020-09-25 11:20:45,284 INFO L226 Difference]: Without dead ends: 1611 [2020-09-25 11:20:45,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-09-25 11:20:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1480. [2020-09-25 11:20:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1480 states. [2020-09-25 11:20:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1836 transitions. [2020-09-25 11:20:45,348 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1836 transitions. Word has length 147 [2020-09-25 11:20:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:45,353 INFO L479 AbstractCegarLoop]: Abstraction has 1480 states and 1836 transitions. [2020-09-25 11:20:45,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1836 transitions. [2020-09-25 11:20:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 11:20:45,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:45,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:45,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:45,364 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:45,365 INFO L82 PathProgramCache]: Analyzing trace with hash -595774204, now seen corresponding path program 1 times [2020-09-25 11:20:45,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:45,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598516848] [2020-09-25 11:20:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 11:20:50,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:20:50,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:20:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:20:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:20:50,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:50,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:50,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:50,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 11:20:50,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 11:20:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:20:50,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:20:50,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:50,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 11:20:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:51,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598516848] [2020-09-25 11:20:51,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:51,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:51,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302149412] [2020-09-25 11:20:51,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:51,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:51,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:51,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:51,137 INFO L87 Difference]: Start difference. First operand 1480 states and 1836 transitions. Second operand 8 states. [2020-09-25 11:20:56,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:56,070 INFO L93 Difference]: Finished difference Result 3778 states and 5001 transitions. [2020-09-25 11:20:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:20:56,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-09-25 11:20:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:56,091 INFO L225 Difference]: With dead ends: 3778 [2020-09-25 11:20:56,091 INFO L226 Difference]: Without dead ends: 2502 [2020-09-25 11:20:56,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:20:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2020-09-25 11:20:56,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1878. [2020-09-25 11:20:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-09-25 11:20:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2316 transitions. [2020-09-25 11:20:56,166 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2316 transitions. Word has length 226 [2020-09-25 11:20:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:56,167 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2316 transitions. [2020-09-25 11:20:56,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2316 transitions. [2020-09-25 11:20:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-25 11:20:56,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:56,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:56,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:56,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:56,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1154121888, now seen corresponding path program 1 times [2020-09-25 11:20:56,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:56,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806954596] [2020-09-25 11:20:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:56,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:01,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:01,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-09-25 11:21:01,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:21:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:21:01,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:01,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:21:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:21:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-09-25 11:21:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:21:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:01,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:01,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:21:01,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:01,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:21:01,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:01,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:21:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:21:01,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:21:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:01,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 11:21:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:21:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 11:21:01,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:21:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:21:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 11:21:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:01,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:01,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:21:01,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:01,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 11:21:01,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:01,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:21:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:21:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 11:21:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:21:02,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806954596] [2020-09-25 11:21:02,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:21:02,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:21:02,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723638120] [2020-09-25 11:21:02,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:21:02,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:21:02,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:21:02,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:21:02,134 INFO L87 Difference]: Start difference. First operand 1878 states and 2316 transitions. Second operand 7 states. [2020-09-25 11:21:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:21:05,338 INFO L93 Difference]: Finished difference Result 4364 states and 5558 transitions. [2020-09-25 11:21:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:21:05,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-09-25 11:21:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:21:05,357 INFO L225 Difference]: With dead ends: 4364 [2020-09-25 11:21:05,357 INFO L226 Difference]: Without dead ends: 2690 [2020-09-25 11:21:05,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:21:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2020-09-25 11:21:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2656. [2020-09-25 11:21:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2656 states. [2020-09-25 11:21:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3254 transitions. [2020-09-25 11:21:05,460 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3254 transitions. Word has length 265 [2020-09-25 11:21:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:21:05,461 INFO L479 AbstractCegarLoop]: Abstraction has 2656 states and 3254 transitions. [2020-09-25 11:21:05,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:21:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3254 transitions. [2020-09-25 11:21:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-09-25 11:21:05,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:21:05,470 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:21:05,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:21:05,470 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:21:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:21:05,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1456791593, now seen corresponding path program 1 times [2020-09-25 11:21:05,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:21:05,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326633467] [2020-09-25 11:21:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:21:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking...