/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:12,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:12,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:12,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:12,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:12,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:12,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:12,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:12,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:12,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:12,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:12,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:12,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:12,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:12,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:12,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:12,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:12,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:12,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:12,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:12,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:12,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:12,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:12,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:12,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:12,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:12,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:12,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:12,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:12,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:12,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:12,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:12,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:12,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:12,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:12,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:12,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:12,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:12,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:12,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:12,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:12,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:34:12,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:12,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:12,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:12,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:12,927 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:12,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:12,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:12,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:12,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:12,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:12,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:12,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:12,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:12,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:12,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:12,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:12,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:12,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:12,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:12,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:12,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:12,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:12,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:12,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:12,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:12,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:12,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:12,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:12,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:12,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:34:13,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:13,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:13,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:13,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:13,440 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:13,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 05:34:13,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfeaea93b/56d167eefa274cc49a44619a3392cbf6/FLAG36941680e [2020-09-25 05:34:14,135 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:14,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 05:34:14,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfeaea93b/56d167eefa274cc49a44619a3392cbf6/FLAG36941680e [2020-09-25 05:34:14,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfeaea93b/56d167eefa274cc49a44619a3392cbf6 [2020-09-25 05:34:14,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:14,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:14,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:14,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:14,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:14,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:14, skipping insertion in model container [2020-09-25 05:34:14,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:14" (1/1) ... [2020-09-25 05:34:14,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:14,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:14,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:14,943 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:15,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:15,173 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:15,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15 WrapperNode [2020-09-25 05:34:15,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:15,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:15,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:15,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:15,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... [2020-09-25 05:34:15,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... [2020-09-25 05:34:15,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... [2020-09-25 05:34:15,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... [2020-09-25 05:34:15,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... [2020-09-25 05:34:15,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... [2020-09-25 05:34:15,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... [2020-09-25 05:34:15,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:15,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:15,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:15,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:15,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:16,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:16,645 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:16,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:16 BoogieIcfgContainer [2020-09-25 05:34:16,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:16,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:16,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:16,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:16,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:14" (1/3) ... [2020-09-25 05:34:16,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:16, skipping insertion in model container [2020-09-25 05:34:16,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:15" (2/3) ... [2020-09-25 05:34:16,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:16, skipping insertion in model container [2020-09-25 05:34:16,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:16" (3/3) ... [2020-09-25 05:34:16,666 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 05:34:16,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:16,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:16,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:16,755 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:16,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:16,756 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:16,756 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:16,756 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:16,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:16,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:16,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 05:34:16,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:16,813 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] [2020-09-25 05:34:16,813 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:16,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:16,822 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 05:34:16,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:16,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-25 05:34:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:22,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 05:34:22,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 05:34:22,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:22,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:22,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 05:34:22,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-09-25 05:34:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:22,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:22,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 05:34:22,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:22,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:22,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:22,474 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 05:34:22,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-25 05:34:22,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:22,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:22,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528182419] [2020-09-25 05:34:22,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:22,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:22,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:22,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:22,507 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:24,731 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:34:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:24,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 05:34:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:24,775 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:34:24,775 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:34:24,788 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 05:34:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:34:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:34:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:34:24,895 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 112 [2020-09-25 05:34:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:24,896 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:34:24,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:34:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 05:34:24,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:24,907 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:34:24,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:24,908 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:24,908 INFO L82 PathProgramCache]: Analyzing trace with hash -2029057097, now seen corresponding path program 1 times [2020-09-25 05:34:24,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:24,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881127817] [2020-09-25 05:34:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:24,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 05:34:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:34:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:29,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:34:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:34:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:30,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:30,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:30,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:34:30,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:30,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:34:30,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:30,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:34:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:30,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:34:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:30,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881127817] [2020-09-25 05:34:30,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:30,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:30,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769635841] [2020-09-25 05:34:30,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:30,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:30,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:30,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:30,268 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 05:34:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:32,284 INFO L93 Difference]: Finished difference Result 1503 states and 1875 transitions. [2020-09-25 05:34:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:32,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 05:34:32,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:32,292 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 05:34:32,292 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 05:34:32,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 05:34:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 889. [2020-09-25 05:34:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 05:34:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 05:34:32,350 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 133 [2020-09-25 05:34:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:32,351 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 05:34:32,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 05:34:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 05:34:32,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:32,359 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:34:32,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:32,360 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash -762171496, now seen corresponding path program 1 times [2020-09-25 05:34:32,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:32,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673545482] [2020-09-25 05:34:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:32,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:37,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 05:34:37,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:34:37,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:37,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:34:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 05:34:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:34:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:37,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:37,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:37,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:37,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:37,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:37,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:34:37,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:34:37,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:37,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:37,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:37,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673545482] [2020-09-25 05:34:37,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:37,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:37,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141368640] [2020-09-25 05:34:37,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:37,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:37,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:37,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:37,671 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 05:34:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:39,819 INFO L93 Difference]: Finished difference Result 2372 states and 3027 transitions. [2020-09-25 05:34:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:39,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 05:34:39,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:39,830 INFO L225 Difference]: With dead ends: 2372 [2020-09-25 05:34:39,830 INFO L226 Difference]: Without dead ends: 1507 [2020-09-25 05:34:39,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-09-25 05:34:39,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1461. [2020-09-25 05:34:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-09-25 05:34:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1822 transitions. [2020-09-25 05:34:39,886 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1822 transitions. Word has length 142 [2020-09-25 05:34:39,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:39,887 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1822 transitions. [2020-09-25 05:34:39,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1822 transitions. [2020-09-25 05:34:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 05:34:39,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:39,895 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:39,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:39,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1151473867, now seen corresponding path program 1 times [2020-09-25 05:34:39,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:39,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004805689] [2020-09-25 05:34:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 05:34:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 05:34:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 05:34:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 05:34:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:45,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:45,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:34:45,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:45,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:45,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:34:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:45,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 05:34:45,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:34:45,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:45,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:34:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 05:34:45,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004805689] [2020-09-25 05:34:45,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:45,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:45,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045555241] [2020-09-25 05:34:45,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:45,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:45,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:45,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:45,392 INFO L87 Difference]: Start difference. First operand 1461 states and 1822 transitions. Second operand 5 states. [2020-09-25 05:34:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:47,323 INFO L93 Difference]: Finished difference Result 3209 states and 4105 transitions. [2020-09-25 05:34:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:47,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 05:34:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:47,339 INFO L225 Difference]: With dead ends: 3209 [2020-09-25 05:34:47,339 INFO L226 Difference]: Without dead ends: 1913 [2020-09-25 05:34:47,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-09-25 05:34:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1606. [2020-09-25 05:34:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-09-25 05:34:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2028 transitions. [2020-09-25 05:34:47,416 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2028 transitions. Word has length 189 [2020-09-25 05:34:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:47,416 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2028 transitions. [2020-09-25 05:34:47,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2028 transitions. [2020-09-25 05:34:47,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 05:34:47,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:47,425 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:47,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:47,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:47,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:47,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1668073877, now seen corresponding path program 1 times [2020-09-25 05:34:47,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:47,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887153821] [2020-09-25 05:34:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 05:34:49,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:34:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1965 [2020-09-25 05:34:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 05:34:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:34:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:49,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:34:49,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:49,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:34:49,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:34:49,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:34:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:49,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:34:49,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:34:49,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 05:34:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 05:34:49,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 05:34:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:34:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:34:49,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887153821] [2020-09-25 05:34:49,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:49,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:49,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754485560] [2020-09-25 05:34:49,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:49,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:49,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:49,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:49,816 INFO L87 Difference]: Start difference. First operand 1606 states and 2028 transitions. Second operand 7 states. [2020-09-25 05:34:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:52,614 INFO L93 Difference]: Finished difference Result 4054 states and 5213 transitions. [2020-09-25 05:34:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:34:52,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 05:34:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:52,633 INFO L225 Difference]: With dead ends: 4054 [2020-09-25 05:34:52,633 INFO L226 Difference]: Without dead ends: 2472 [2020-09-25 05:34:52,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:52,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2020-09-25 05:34:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1966. [2020-09-25 05:34:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-25 05:34:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2458 transitions. [2020-09-25 05:34:52,711 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2458 transitions. Word has length 217 [2020-09-25 05:34:52,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:52,712 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 2458 transitions. [2020-09-25 05:34:52,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2458 transitions. [2020-09-25 05:34:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 05:34:52,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:52,722 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, 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] [2020-09-25 05:34:52,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:52,723 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:52,723 INFO L82 PathProgramCache]: Analyzing trace with hash -205673884, now seen corresponding path program 1 times [2020-09-25 05:34:52,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:52,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346649631] [2020-09-25 05:34:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:52,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:57,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 05:34:57,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:34:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:34:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:57,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 05:34:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:34:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:57,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:34:57,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:57,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:57,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:34:57,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:34:57,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:57,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:34:57,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 05:34:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 05:34:58,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 05:34:58,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:34:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:58,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346649631] [2020-09-25 05:34:58,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:58,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:58,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175751935] [2020-09-25 05:34:58,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:58,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:58,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:58,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:58,233 INFO L87 Difference]: Start difference. First operand 1966 states and 2458 transitions. Second operand 7 states. [2020-09-25 05:35:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:00,850 INFO L93 Difference]: Finished difference Result 4703 states and 5986 transitions. [2020-09-25 05:35:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:35:00,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 05:35:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:00,866 INFO L225 Difference]: With dead ends: 4703 [2020-09-25 05:35:00,866 INFO L226 Difference]: Without dead ends: 2761 [2020-09-25 05:35:00,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:35:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2020-09-25 05:35:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2403. [2020-09-25 05:35:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-09-25 05:35:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2932 transitions. [2020-09-25 05:35:00,947 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2932 transitions. Word has length 222 [2020-09-25 05:35:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:00,948 INFO L479 AbstractCegarLoop]: Abstraction has 2403 states and 2932 transitions. [2020-09-25 05:35:00,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2932 transitions. [2020-09-25 05:35:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 05:35:00,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:00,960 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 05:35:00,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:35:00,960 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:00,961 INFO L82 PathProgramCache]: Analyzing trace with hash -605140127, now seen corresponding path program 1 times [2020-09-25 05:35:00,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:00,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845733805] [2020-09-25 05:35:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking...