/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:43:30,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:43:30,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:43:30,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:43:30,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:43:30,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:43:30,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:43:30,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:43:30,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:43:30,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:43:30,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:43:30,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:43:30,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:43:30,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:43:30,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:43:30,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:43:30,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:43:30,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:43:30,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:43:30,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:43:30,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:43:30,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:43:30,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:43:30,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:43:30,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:43:30,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:43:30,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:43:30,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:43:30,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:43:30,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:43:30,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:43:30,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:43:30,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:43:30,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:43:30,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:43:30,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:43:30,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:43:30,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:43:30,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:43:30,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:43:30,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:43:30,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 02:43:30,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:43:30,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:43:30,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:43:30,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:43:30,860 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:43:30,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:43:30,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:43:30,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:43:30,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:43:30,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:43:30,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:43:30,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:43:30,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:43:30,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:43:30,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:43:30,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:43:30,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:43:30,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:43:30,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:43:30,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:43:30,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:43:30,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:43:30,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:43:30,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:43:30,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:43:30,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:43:30,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:43:30,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:43:30,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:43:30,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:43:31,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:43:31,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:43:31,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:43:31,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:43:31,177 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:43:31,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-14 02:43:31,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82db9f6fa/8e78d630aaf841ce81c40a21ce27d04e/FLAG1767a2944 [2020-10-14 02:43:32,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:43:32,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-14 02:43:32,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82db9f6fa/8e78d630aaf841ce81c40a21ce27d04e/FLAG1767a2944 [2020-10-14 02:43:32,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82db9f6fa/8e78d630aaf841ce81c40a21ce27d04e [2020-10-14 02:43:32,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:43:32,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:43:32,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:43:32,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:43:32,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:43:32,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:43:32" (1/1) ... [2020-10-14 02:43:32,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bee2e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:32, skipping insertion in model container [2020-10-14 02:43:32,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:43:32" (1/1) ... [2020-10-14 02:43:32,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:43:32,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:43:33,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:43:33,988 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:43:34,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:43:34,891 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:43:34,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34 WrapperNode [2020-10-14 02:43:34,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:43:34,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:43:34,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:43:34,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:43:34,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... [2020-10-14 02:43:34,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... [2020-10-14 02:43:35,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... [2020-10-14 02:43:35,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... [2020-10-14 02:43:35,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... [2020-10-14 02:43:35,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... [2020-10-14 02:43:35,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... [2020-10-14 02:43:35,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:43:35,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:43:35,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:43:35,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:43:35,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:43:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:43:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:43:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:43:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:43:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:43:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:43:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:43:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:43:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:43:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:43:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:43:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:43:40,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:43:40,932 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:43:40,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:43:40 BoogieIcfgContainer [2020-10-14 02:43:40,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:43:40,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:43:40,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:43:40,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:43:40,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:43:32" (1/3) ... [2020-10-14 02:43:40,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2309ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:43:40, skipping insertion in model container [2020-10-14 02:43:40,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:43:34" (2/3) ... [2020-10-14 02:43:40,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2309ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:43:40, skipping insertion in model container [2020-10-14 02:43:40,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:43:40" (3/3) ... [2020-10-14 02:43:40,955 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2020-10-14 02:43:40,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:43:40,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:43:40,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:43:41,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:43:41,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:43:41,028 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:43:41,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:43:41,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:43:41,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:43:41,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:43:41,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:43:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:43:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 02:43:41,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:41,081 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] [2020-10-14 02:43:41,081 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:41,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2140665405, now seen corresponding path program 1 times [2020-10-14 02:43:41,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:41,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805170109] [2020-10-14 02:43:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:41,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:41,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:41,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:43:41,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-14 02:43:41,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:41,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:43:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:43:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:43:41,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:43:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 02:43:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:42,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:43:42,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:43:42,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805170109] [2020-10-14 02:43:42,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:43:42,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:43:42,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696817617] [2020-10-14 02:43:42,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:43:42,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:42,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:43:42,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:43:42,195 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 02:43:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:51,598 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:43:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:43:51,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 02:43:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:51,634 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:43:51,635 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:43:51,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:43:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:43:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:43:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:43:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:43:51,821 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 72 [2020-10-14 02:43:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:51,822 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:43:51,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:43:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:43:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 02:43:51,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:51,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:43:51,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:43:51,831 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:51,832 INFO L82 PathProgramCache]: Analyzing trace with hash 863579141, now seen corresponding path program 1 times [2020-10-14 02:43:51,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:51,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371503350] [2020-10-14 02:43:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:51,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:53,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 02:43:53,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:43:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-10-14 02:43:53,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:53,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:43:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:43:53,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 02:43:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:53,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:53,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:53,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:43:53,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:53,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:43:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:53,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:43:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:43:53,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:53,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:43:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:43:53,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371503350] [2020-10-14 02:43:53,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:53,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:43:53,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456829890] [2020-10-14 02:43:53,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:43:53,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:43:53,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:43:53,733 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:44:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:03,811 INFO L93 Difference]: Finished difference Result 4671 states and 7648 transitions. [2020-10-14 02:44:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:03,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-14 02:44:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:03,835 INFO L225 Difference]: With dead ends: 4671 [2020-10-14 02:44:03,835 INFO L226 Difference]: Without dead ends: 3124 [2020-10-14 02:44:03,841 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 [2020-10-14 02:44:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-14 02:44:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3111. [2020-10-14 02:44:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-14 02:44:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4441 transitions. [2020-10-14 02:44:03,943 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4441 transitions. Word has length 147 [2020-10-14 02:44:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:03,945 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4441 transitions. [2020-10-14 02:44:03,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:44:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4441 transitions. [2020-10-14 02:44:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 02:44:03,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:03,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:44:03,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:44:03,950 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:03,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:03,951 INFO L82 PathProgramCache]: Analyzing trace with hash -347586115, now seen corresponding path program 1 times [2020-10-14 02:44:03,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:03,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10017568] [2020-10-14 02:44:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:04,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:05,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:05,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 02:44:05,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:44:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-14 02:44:05,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:05,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:44:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:44:05,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:05,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:05,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 02:44:05,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:05,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:44:05,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 02:44:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:05,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:44:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:05,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10017568] [2020-10-14 02:44:05,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:05,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:44:05,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782759123] [2020-10-14 02:44:05,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:44:05,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:44:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:44:05,792 INFO L87 Difference]: Start difference. First operand 3111 states and 4441 transitions. Second operand 5 states. [2020-10-14 02:44:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:17,998 INFO L93 Difference]: Finished difference Result 9335 states and 13514 transitions. [2020-10-14 02:44:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:18,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 02:44:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:18,037 INFO L225 Difference]: With dead ends: 9335 [2020-10-14 02:44:18,037 INFO L226 Difference]: Without dead ends: 6230 [2020-10-14 02:44:18,046 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 [2020-10-14 02:44:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2020-10-14 02:44:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6226. [2020-10-14 02:44:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-10-14 02:44:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 8300 transitions. [2020-10-14 02:44:18,243 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 8300 transitions. Word has length 151 [2020-10-14 02:44:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:18,247 INFO L479 AbstractCegarLoop]: Abstraction has 6226 states and 8300 transitions. [2020-10-14 02:44:18,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:44:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 8300 transitions. [2020-10-14 02:44:18,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 02:44:18,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:18,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-10-14 02:44:18,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:44:18,261 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:18,261 INFO L82 PathProgramCache]: Analyzing trace with hash -665193256, now seen corresponding path program 1 times [2020-10-14 02:44:18,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:18,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788086748] [2020-10-14 02:44:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 02:44:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:44:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2200 [2020-10-14 02:44:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:20,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 02:44:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:44:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:20,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:20,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:44:20,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:20,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:20,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:20,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:44:20,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 02:44:20,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:20,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:44:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:21,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788086748] [2020-10-14 02:44:21,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:21,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:44:21,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008238599] [2020-10-14 02:44:21,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:44:21,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:21,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:44:21,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:44:21,033 INFO L87 Difference]: Start difference. First operand 6226 states and 8300 transitions. Second operand 5 states. [2020-10-14 02:44:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:33,367 INFO L93 Difference]: Finished difference Result 15559 states and 21467 transitions. [2020-10-14 02:44:33,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:33,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 02:44:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:33,428 INFO L225 Difference]: With dead ends: 15559 [2020-10-14 02:44:33,428 INFO L226 Difference]: Without dead ends: 9339 [2020-10-14 02:44:33,448 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 [2020-10-14 02:44:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9339 states. [2020-10-14 02:44:33,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9339 to 9335. [2020-10-14 02:44:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9335 states. [2020-10-14 02:44:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9335 states to 9335 states and 12870 transitions. [2020-10-14 02:44:33,798 INFO L78 Accepts]: Start accepts. Automaton has 9335 states and 12870 transitions. Word has length 220 [2020-10-14 02:44:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:33,800 INFO L479 AbstractCegarLoop]: Abstraction has 9335 states and 12870 transitions. [2020-10-14 02:44:33,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:44:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 9335 states and 12870 transitions. [2020-10-14 02:44:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 02:44:33,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:33,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:33,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:44:33,807 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:33,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:33,807 INFO L82 PathProgramCache]: Analyzing trace with hash 784022221, now seen corresponding path program 1 times [2020-10-14 02:44:33,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:33,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030910210] [2020-10-14 02:44:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:37,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 02:44:37,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:44:37,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3519 [2020-10-14 02:44:37,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:37,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:44:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:44:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:37,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:37,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:37,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:37,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:37,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:37,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:44:37,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:37,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:44:37,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:37,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:44:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:44:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:37,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:37,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:44:37,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 02:44:37,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:37,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:44:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:44:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:44:37,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030910210] [2020-10-14 02:44:37,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:37,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:44:37,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642280014] [2020-10-14 02:44:37,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:44:37,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:37,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:44:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:44:37,956 INFO L87 Difference]: Start difference. First operand 9335 states and 12870 transitions. Second operand 7 states. [2020-10-14 02:44:58,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:58,501 INFO L93 Difference]: Finished difference Result 24489 states and 36429 transitions. [2020-10-14 02:44:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:44:58,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-14 02:44:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:58,619 INFO L225 Difference]: With dead ends: 24489 [2020-10-14 02:44:58,620 INFO L226 Difference]: Without dead ends: 15160 [2020-10-14 02:44:58,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:44:58,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15160 states. [2020-10-14 02:44:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15160 to 15013. [2020-10-14 02:44:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15013 states. [2020-10-14 02:44:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15013 states to 15013 states and 20527 transitions. [2020-10-14 02:44:59,188 INFO L78 Accepts]: Start accepts. Automaton has 15013 states and 20527 transitions. Word has length 222 [2020-10-14 02:44:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:59,189 INFO L479 AbstractCegarLoop]: Abstraction has 15013 states and 20527 transitions. [2020-10-14 02:44:59,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:44:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 15013 states and 20527 transitions. [2020-10-14 02:44:59,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 02:44:59,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:59,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:59,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:44:59,203 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:59,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1511292646, now seen corresponding path program 1 times [2020-10-14 02:44:59,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:59,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916751180] [2020-10-14 02:44:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:04,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:04,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 02:45:04,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:45:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 02:45:04,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:04,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:45:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:45:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:45:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:04,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:04,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:04,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:45:04,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:04,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:04,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:04,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:45:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 02:45:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:04,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:45:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-14 02:45:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:04,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:04,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:45:04,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 02:45:04,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:04,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:45:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:05,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916751180] [2020-10-14 02:45:05,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:05,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:05,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157810470] [2020-10-14 02:45:05,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:05,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:05,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:05,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:05,195 INFO L87 Difference]: Start difference. First operand 15013 states and 20527 transitions. Second operand 7 states. [2020-10-14 02:45:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:25,147 INFO L93 Difference]: Finished difference Result 43323 states and 66290 transitions. [2020-10-14 02:45:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:45:25,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-14 02:45:25,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:25,342 INFO L225 Difference]: With dead ends: 43323 [2020-10-14 02:45:25,342 INFO L226 Difference]: Without dead ends: 28320 [2020-10-14 02:45:25,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:45:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28320 states. [2020-10-14 02:45:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28320 to 27956. [2020-10-14 02:45:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27956 states. [2020-10-14 02:45:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27956 states to 27956 states and 36540 transitions. [2020-10-14 02:45:27,526 INFO L78 Accepts]: Start accepts. Automaton has 27956 states and 36540 transitions. Word has length 295 [2020-10-14 02:45:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:27,527 INFO L479 AbstractCegarLoop]: Abstraction has 27956 states and 36540 transitions. [2020-10-14 02:45:27,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:45:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 27956 states and 36540 transitions. [2020-10-14 02:45:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-14 02:45:27,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:27,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:45:27,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:45:27,552 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:27,552 INFO L82 PathProgramCache]: Analyzing trace with hash -544862175, now seen corresponding path program 1 times [2020-10-14 02:45:27,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:27,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733498462] [2020-10-14 02:45:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:32,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:32,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 02:45:32,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:45:32,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 02:45:32,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:32,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:45:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 02:45:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:45:32,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:32,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:45:32,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:32,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:45:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 02:45:32,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:32,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:45:32,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:45:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:45:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:33,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:33,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 02:45:33,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-14 02:45:33,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:33,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 02:45:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:33,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733498462] [2020-10-14 02:45:33,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:33,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:33,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086098526] [2020-10-14 02:45:33,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:33,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:33,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:33,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:33,905 INFO L87 Difference]: Start difference. First operand 27956 states and 36540 transitions. Second operand 7 states. [2020-10-14 02:45:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:51,310 INFO L93 Difference]: Finished difference Result 69227 states and 95690 transitions. [2020-10-14 02:45:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:45:51,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-14 02:45:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:51,470 INFO L225 Difference]: With dead ends: 69227 [2020-10-14 02:45:51,470 INFO L226 Difference]: Without dead ends: 42044 [2020-10-14 02:45:51,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:45:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42044 states. [2020-10-14 02:45:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42044 to 36525. [2020-10-14 02:45:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36525 states. [2020-10-14 02:45:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36525 states to 36525 states and 46294 transitions. [2020-10-14 02:45:52,424 INFO L78 Accepts]: Start accepts. Automaton has 36525 states and 46294 transitions. Word has length 336 [2020-10-14 02:45:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:52,425 INFO L479 AbstractCegarLoop]: Abstraction has 36525 states and 46294 transitions. [2020-10-14 02:45:52,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:45:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 36525 states and 46294 transitions. [2020-10-14 02:45:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-14 02:45:52,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:52,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:45:52,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:45:52,441 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:52,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:52,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1676371304, now seen corresponding path program 1 times [2020-10-14 02:45:52,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:52,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208457517] [2020-10-14 02:45:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:56,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 02:45:56,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:45:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4414 [2020-10-14 02:45:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:56,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-14 02:45:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:45:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:57,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:57,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:57,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:45:57,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:57,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 02:45:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 02:45:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:57,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 02:45:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:45:57,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208457517] [2020-10-14 02:45:57,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:57,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:45:57,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077667878] [2020-10-14 02:45:57,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:45:57,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:57,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:45:57,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:45:57,480 INFO L87 Difference]: Start difference. First operand 36525 states and 46294 transitions. Second operand 5 states. [2020-10-14 02:46:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:12,835 INFO L93 Difference]: Finished difference Result 98807 states and 128875 transitions. [2020-10-14 02:46:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:12,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 340 [2020-10-14 02:46:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:13,060 INFO L225 Difference]: With dead ends: 98807 [2020-10-14 02:46:13,060 INFO L226 Difference]: Without dead ends: 63055 [2020-10-14 02:46:13,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:46:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63055 states. [2020-10-14 02:46:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63055 to 61511. [2020-10-14 02:46:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61511 states. [2020-10-14 02:46:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61511 states to 61511 states and 78696 transitions. [2020-10-14 02:46:14,535 INFO L78 Accepts]: Start accepts. Automaton has 61511 states and 78696 transitions. Word has length 340 [2020-10-14 02:46:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:14,536 INFO L479 AbstractCegarLoop]: Abstraction has 61511 states and 78696 transitions. [2020-10-14 02:46:14,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 61511 states and 78696 transitions. [2020-10-14 02:46:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-14 02:46:14,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:14,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:46:14,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:46:14,563 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash -253121990, now seen corresponding path program 1 times [2020-10-14 02:46:14,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:14,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737590319] [2020-10-14 02:46:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-14 02:46:19,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:46:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 02:46:19,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:19,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 02:46:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 02:46:19,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:19,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:19,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:19,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:19,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:46:19,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:19,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:19,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:19,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:19,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:19,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:19,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:46:19,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 02:46:19,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:19,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:46:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:46:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:20,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:20,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 02:46:20,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 02:46:20,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:20,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 02:46:20,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:46:20,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737590319] [2020-10-14 02:46:20,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:20,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:46:20,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740737613] [2020-10-14 02:46:20,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:46:20,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:46:20,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:20,311 INFO L87 Difference]: Start difference. First operand 61511 states and 78696 transitions. Second operand 7 states. [2020-10-14 02:46:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:36,620 INFO L93 Difference]: Finished difference Result 131848 states and 170949 transitions. [2020-10-14 02:46:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:46:36,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-10-14 02:46:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:36,782 INFO L225 Difference]: With dead ends: 131848 [2020-10-14 02:46:36,783 INFO L226 Difference]: Without dead ends: 63269 [2020-10-14 02:46:36,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:46:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63269 states. [2020-10-14 02:46:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63269 to 57799. [2020-10-14 02:46:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57799 states. [2020-10-14 02:46:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57799 states to 57799 states and 68141 transitions. [2020-10-14 02:46:37,849 INFO L78 Accepts]: Start accepts. Automaton has 57799 states and 68141 transitions. Word has length 399 [2020-10-14 02:46:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:37,849 INFO L479 AbstractCegarLoop]: Abstraction has 57799 states and 68141 transitions. [2020-10-14 02:46:37,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:46:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 57799 states and 68141 transitions. [2020-10-14 02:46:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-14 02:46:37,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:37,869 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:46:37,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:46:37,870 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:37,870 INFO L82 PathProgramCache]: Analyzing trace with hash 930198924, now seen corresponding path program 1 times [2020-10-14 02:46:37,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:37,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407119118] [2020-10-14 02:46:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:42,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:42,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-14 02:46:42,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:46:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 02:46:42,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:42,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-14 02:46:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 02:46:42,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:43,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:43,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:43,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:46:43,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:43,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:43,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:43,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:46:43,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:43,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 02:46:43,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:43,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:46:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:43,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:43,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:46:43,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:46:43,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:43,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:46:43,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-14 02:46:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:43,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:43,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:46:43,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:43,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 02:46:43,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:43,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 02:46:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 02:46:43,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407119118] [2020-10-14 02:46:43,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:43,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:46:43,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244831578] [2020-10-14 02:46:43,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:46:43,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:43,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:46:43,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:43,543 INFO L87 Difference]: Start difference. First operand 57799 states and 68141 transitions. Second operand 7 states. [2020-10-14 02:47:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:02,519 INFO L93 Difference]: Finished difference Result 129604 states and 159767 transitions. [2020-10-14 02:47:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:47:02,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2020-10-14 02:47:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:02,746 INFO L225 Difference]: With dead ends: 129604 [2020-10-14 02:47:02,746 INFO L226 Difference]: Without dead ends: 71811 [2020-10-14 02:47:02,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:47:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71811 states. [2020-10-14 02:47:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71811 to 69863. [2020-10-14 02:47:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69863 states. [2020-10-14 02:47:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69863 states to 69863 states and 82535 transitions. [2020-10-14 02:47:04,068 INFO L78 Accepts]: Start accepts. Automaton has 69863 states and 82535 transitions. Word has length 420 [2020-10-14 02:47:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:04,069 INFO L479 AbstractCegarLoop]: Abstraction has 69863 states and 82535 transitions. [2020-10-14 02:47:04,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:47:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 69863 states and 82535 transitions. [2020-10-14 02:47:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-14 02:47:04,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:04,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:47:04,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:47:04,086 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:04,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1784743751, now seen corresponding path program 1 times [2020-10-14 02:47:04,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:04,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817743356] [2020-10-14 02:47:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking...