/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:18,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:18,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:18,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:18,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:18,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:18,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:18,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:18,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:18,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:18,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:18,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:18,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:18,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:18,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:18,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:18,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:18,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:18,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:18,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:18,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:18,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:18,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:18,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:18,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:18,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:18,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:18,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:18,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:18,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:18,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:18,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:18,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:18,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:18,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:18,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:18,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:18,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:18,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:18,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:18,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:18,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:27:18,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:18,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:18,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:18,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:18,872 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:18,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:18,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:18,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:18,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:18,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:18,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:18,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:18,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:18,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:18,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:18,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:18,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:18,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:18,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:18,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:18,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:18,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:18,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:18,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:18,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:18,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:18,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:18,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:18,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:18,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:27:19,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:19,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:19,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:19,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:19,377 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:19,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label18.c [2020-09-25 04:27:19,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e77a590d/df74118afa4d4f7d9cba43f68e0c1f8c/FLAGdca8ce00a [2020-09-25 04:27:20,192 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:20,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label18.c [2020-09-25 04:27:20,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e77a590d/df74118afa4d4f7d9cba43f68e0c1f8c/FLAGdca8ce00a [2020-09-25 04:27:20,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e77a590d/df74118afa4d4f7d9cba43f68e0c1f8c [2020-09-25 04:27:20,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:20,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:20,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:20,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:20,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:20,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:20" (1/1) ... [2020-09-25 04:27:20,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6752e30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:20, skipping insertion in model container [2020-09-25 04:27:20,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:20" (1/1) ... [2020-09-25 04:27:20,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:20,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:21,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:21,165 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:21,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:21,301 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:21,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21 WrapperNode [2020-09-25 04:27:21,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:21,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:21,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:21,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:21,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:21,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:21,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:21,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:21,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:23,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:23,012 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:23,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:23 BoogieIcfgContainer [2020-09-25 04:27:23,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:23,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:23,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:23,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:23,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:20" (1/3) ... [2020-09-25 04:27:23,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316392ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:23, skipping insertion in model container [2020-09-25 04:27:23,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (2/3) ... [2020-09-25 04:27:23,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316392ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:23, skipping insertion in model container [2020-09-25 04:27:23,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:23" (3/3) ... [2020-09-25 04:27:23,033 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label18.c [2020-09-25 04:27:23,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:23,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:23,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:23,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:23,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:23,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:23,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:23,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:23,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:23,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:23,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:23,151 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 04:27:23,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:23,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:23,175 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:23,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:23,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1150212666, now seen corresponding path program 1 times [2020-09-25 04:27:23,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:23,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433821864] [2020-09-25 04:27:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:28,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 04:27:28,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:27:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:27:28,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:28,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:27:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 04:27:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:27:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:28,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:28,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 04:27:28,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:28,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:27:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:28,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433821864] [2020-09-25 04:27:28,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:28,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:27:28,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115575293] [2020-09-25 04:27:28,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:27:28,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:28,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:27:28,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:27:28,933 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:27:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:31,227 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 04:27:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:27:31,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-09-25 04:27:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:31,262 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 04:27:31,262 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 04:27:31,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 04:27:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 04:27:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 04:27:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 04:27:31,424 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 153 [2020-09-25 04:27:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:31,426 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 04:27:31,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:27:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 04:27:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:27:31,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:31,441 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:31,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:31,442 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:31,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:31,443 INFO L82 PathProgramCache]: Analyzing trace with hash -497277338, now seen corresponding path program 1 times [2020-09-25 04:27:31,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:31,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733113671] [2020-09-25 04:27:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:36,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 04:27:36,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:27:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:27:36,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:36,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:27:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:27:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:27:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:36,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:36,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:36,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:36,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:36,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:36,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:27:36,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:36,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:27:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:37,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733113671] [2020-09-25 04:27:37,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:37,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:27:37,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934517376] [2020-09-25 04:27:37,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:37,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:37,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:37,033 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 8 states. [2020-09-25 04:27:41,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:41,633 INFO L93 Difference]: Finished difference Result 2289 states and 3093 transitions. [2020-09-25 04:27:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:41,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2020-09-25 04:27:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:41,655 INFO L225 Difference]: With dead ends: 2289 [2020-09-25 04:27:41,656 INFO L226 Difference]: Without dead ends: 1379 [2020-09-25 04:27:41,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-09-25 04:27:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1330. [2020-09-25 04:27:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 04:27:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1579 transitions. [2020-09-25 04:27:41,730 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1579 transitions. Word has length 171 [2020-09-25 04:27:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:41,731 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1579 transitions. [2020-09-25 04:27:41,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:27:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1579 transitions. [2020-09-25 04:27:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 04:27:41,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:41,742 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:41,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:41,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash 243110088, now seen corresponding path program 1 times [2020-09-25 04:27:41,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:41,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059634970] [2020-09-25 04:27:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:46,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 04:27:46,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:27:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:46,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:46,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:27:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:27:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:27:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:27:47,309 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 27 [2020-09-25 04:27:47,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:27:47,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:47,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:47,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:27:47,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:27:47,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:47,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:27:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:47,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059634970] [2020-09-25 04:27:47,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:47,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:27:47,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535299458] [2020-09-25 04:27:47,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:47,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:47,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:47,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:47,824 INFO L87 Difference]: Start difference. First operand 1330 states and 1579 transitions. Second operand 8 states. [2020-09-25 04:27:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:51,825 INFO L93 Difference]: Finished difference Result 3419 states and 4222 transitions. [2020-09-25 04:27:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:27:51,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-09-25 04:27:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:51,839 INFO L225 Difference]: With dead ends: 3419 [2020-09-25 04:27:51,840 INFO L226 Difference]: Without dead ends: 2011 [2020-09-25 04:27:51,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2020-09-25 04:27:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1948. [2020-09-25 04:27:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-25 04:27:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2273 transitions. [2020-09-25 04:27:51,917 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2273 transitions. Word has length 174 [2020-09-25 04:27:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:51,918 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2273 transitions. [2020-09-25 04:27:51,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:27:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2273 transitions. [2020-09-25 04:27:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 04:27:51,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:51,934 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:51,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:51,935 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:51,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1493028965, now seen corresponding path program 1 times [2020-09-25 04:27:51,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:51,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676581657] [2020-09-25 04:27:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:56,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:27:56,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:27:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:27:56,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:56,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:27:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 04:27:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:57,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:27:57,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:57,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:27:57,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:27:57,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:27:57,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:27:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:57,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676581657] [2020-09-25 04:27:57,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:57,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:57,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098968953] [2020-09-25 04:27:57,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:57,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:57,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:57,248 INFO L87 Difference]: Start difference. First operand 1948 states and 2273 transitions. Second operand 5 states. [2020-09-25 04:27:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:58,964 INFO L93 Difference]: Finished difference Result 4213 states and 5055 transitions. [2020-09-25 04:27:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:58,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 04:27:58,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:58,980 INFO L225 Difference]: With dead ends: 4213 [2020-09-25 04:27:58,980 INFO L226 Difference]: Without dead ends: 2287 [2020-09-25 04:27:58,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-09-25 04:27:59,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2096. [2020-09-25 04:27:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-09-25 04:27:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2508 transitions. [2020-09-25 04:27:59,049 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2508 transitions. Word has length 177 [2020-09-25 04:27:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:59,050 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 2508 transitions. [2020-09-25 04:27:59,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2508 transitions. [2020-09-25 04:27:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 04:27:59,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:59,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:59,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:59,058 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1265190879, now seen corresponding path program 1 times [2020-09-25 04:27:59,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:59,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258235097] [2020-09-25 04:27:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 04:28:04,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:04,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 04:28:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 04:28:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:04,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:04,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:28:04,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:04,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:28:04,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:28:04,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:04,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:28:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:04,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258235097] [2020-09-25 04:28:04,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:04,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:28:04,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762737907] [2020-09-25 04:28:04,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:28:04,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:04,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:28:04,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:04,450 INFO L87 Difference]: Start difference. First operand 2096 states and 2508 transitions. Second operand 6 states. [2020-09-25 04:28:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:06,574 INFO L93 Difference]: Finished difference Result 4991 states and 6213 transitions. [2020-09-25 04:28:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:06,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-09-25 04:28:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:06,589 INFO L225 Difference]: With dead ends: 4991 [2020-09-25 04:28:06,590 INFO L226 Difference]: Without dead ends: 2917 [2020-09-25 04:28:06,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-09-25 04:28:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2858. [2020-09-25 04:28:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2858 states. [2020-09-25 04:28:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 3558 transitions. [2020-09-25 04:28:06,697 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 3558 transitions. Word has length 187 [2020-09-25 04:28:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:06,697 INFO L479 AbstractCegarLoop]: Abstraction has 2858 states and 3558 transitions. [2020-09-25 04:28:06,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:28:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 3558 transitions. [2020-09-25 04:28:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-25 04:28:06,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:06,713 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:06,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:06,713 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1373265253, now seen corresponding path program 1 times [2020-09-25 04:28:06,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:06,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773581324] [2020-09-25 04:28:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:06,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking...