/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/Problem18_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:19:04,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:19:04,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:19:04,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:19:04,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:19:04,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:19:04,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:19:04,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:19:04,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:19:04,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:19:04,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:19:04,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:19:04,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:19:04,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:19:04,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:19:04,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:19:04,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:19:04,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:19:04,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:19:04,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:19:04,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:19:04,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:19:04,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:19:04,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:19:04,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:19:04,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:19:04,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:19:04,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:19:04,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:19:04,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:19:04,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:19:04,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:19:04,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:19:04,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:19:04,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:19:04,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:19:04,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:19:04,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:19:04,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:19:04,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:19:04,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:19:04,929 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 04:19:04,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:19:04,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:19:04,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:19:04,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:19:04,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:19:04,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:19:04,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:19:04,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:19:04,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:19:04,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:19:04,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:19:04,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:19:04,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:19:04,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:19:04,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:19:04,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:19:04,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:19:04,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:19:04,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:19:04,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:19:04,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:19:04,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:19:04,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:19:04,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:19:04,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:19:04,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:19:04,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:19:04,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:19:04,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:19:04,959 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 04:19:05,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:19:05,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:19:05,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:19:05,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:19:05,305 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:19:05,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-14 04:19:05,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/546f41b78/d0ad3cb162204fd7831f6f013ed6f579/FLAG9da218163 [2020-10-14 04:19:06,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:19:06,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-14 04:19:06,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/546f41b78/d0ad3cb162204fd7831f6f013ed6f579/FLAG9da218163 [2020-10-14 04:19:06,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/546f41b78/d0ad3cb162204fd7831f6f013ed6f579 [2020-10-14 04:19:06,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:19:06,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:19:06,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:06,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:19:06,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:19:06,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:06" (1/1) ... [2020-10-14 04:19:06,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556c1ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:06, skipping insertion in model container [2020-10-14 04:19:06,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:06" (1/1) ... [2020-10-14 04:19:06,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:19:06,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:19:07,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:07,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:19:08,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:08,468 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:19:08,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08 WrapperNode [2020-10-14 04:19:08,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:08,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:19:08,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:19:08,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:19:08,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (1/1) ... [2020-10-14 04:19:08,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (1/1) ... [2020-10-14 04:19:08,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (1/1) ... [2020-10-14 04:19:08,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (1/1) ... [2020-10-14 04:19:08,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (1/1) ... [2020-10-14 04:19:08,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (1/1) ... [2020-10-14 04:19:08,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (1/1) ... [2020-10-14 04:19:08,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:19:08,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:19:08,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:19:08,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:19:08,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (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 04:19:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:19:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:19:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:19:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:19:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:19:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:19:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:19:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:19:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:19:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:19:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:19:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:19:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:19:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:19:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:19:14,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:19:14,846 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:19:14,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:14 BoogieIcfgContainer [2020-10-14 04:19:14,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:19:14,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:19:14,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:19:14,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:19:14,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:19:06" (1/3) ... [2020-10-14 04:19:14,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171749e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:14, skipping insertion in model container [2020-10-14 04:19:14,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:08" (2/3) ... [2020-10-14 04:19:14,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171749e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:14, skipping insertion in model container [2020-10-14 04:19:14,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:14" (3/3) ... [2020-10-14 04:19:14,881 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label33.c [2020-10-14 04:19:14,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:19:14,906 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:19:14,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:19:14,959 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:19:14,959 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:19:14,960 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:19:14,960 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:19:14,960 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:19:14,960 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:19:14,960 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:19:14,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:19:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:19:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:19:15,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:15,022 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] [2020-10-14 04:19:15,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:15,030 INFO L82 PathProgramCache]: Analyzing trace with hash -666712142, now seen corresponding path program 1 times [2020-10-14 04:19:15,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:15,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976158621] [2020-10-14 04:19:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:19:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 04:19:15,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:15,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:19:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:19:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:19:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:15,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:15,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:15,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:19:15,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:15,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:19:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:15,788 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 04:19:15,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976158621] [2020-10-14 04:19:15,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:19:15,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:19:15,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472156515] [2020-10-14 04:19:15,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:19:15,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:15,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:19:15,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:19:15,818 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:19:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:23,492 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:19:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:23,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 04:19:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:23,523 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:19:23,524 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:19:23,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:19:23,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:19:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:19:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:19:23,720 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 29 [2020-10-14 04:19:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:23,722 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:19:23,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:19:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:19:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:19:23,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:23,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:23,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:19:23,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash 931351542, now seen corresponding path program 1 times [2020-10-14 04:19:23,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:23,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752608929] [2020-10-14 04:19:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:24,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:19:24,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:19:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-14 04:19:24,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:24,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:19:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:19:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:24,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:24,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:19:24,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:24,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:24,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:24,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:19:24,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:24,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:19:24,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:24,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:24,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:19:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:24,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752608929] [2020-10-14 04:19:24,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:24,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:19:24,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507726318] [2020-10-14 04:19:24,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:19:24,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:24,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:19:24,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:19:24,727 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 6 states. [2020-10-14 04:19:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:38,340 INFO L93 Difference]: Finished difference Result 4271 states and 7178 transitions. [2020-10-14 04:19:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:19:38,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 04:19:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:38,358 INFO L225 Difference]: With dead ends: 4271 [2020-10-14 04:19:38,359 INFO L226 Difference]: Without dead ends: 2852 [2020-10-14 04:19:38,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:19:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-14 04:19:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-14 04:19:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-14 04:19:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4329 transitions. [2020-10-14 04:19:38,448 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4329 transitions. Word has length 99 [2020-10-14 04:19:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:38,449 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4329 transitions. [2020-10-14 04:19:38,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:19:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4329 transitions. [2020-10-14 04:19:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 04:19:38,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:38,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:38,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:19:38,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1632961130, now seen corresponding path program 1 times [2020-10-14 04:19:38,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:38,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826063978] [2020-10-14 04:19:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:40,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:40,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 04:19:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-14 04:19:40,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:40,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:19:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:19:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:40,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:40,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:19:40,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:40,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:40,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:40,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:40,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:19:40,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 04:19:40,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:40,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:19:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:40,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826063978] [2020-10-14 04:19:40,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:40,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:40,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052843135] [2020-10-14 04:19:40,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:40,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:40,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:40,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:40,505 INFO L87 Difference]: Start difference. First operand 2848 states and 4329 transitions. Second operand 5 states. [2020-10-14 04:19:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:49,554 INFO L93 Difference]: Finished difference Result 8534 states and 13093 transitions. [2020-10-14 04:19:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:49,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-14 04:19:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:49,586 INFO L225 Difference]: With dead ends: 8534 [2020-10-14 04:19:49,586 INFO L226 Difference]: Without dead ends: 5692 [2020-10-14 04:19:49,594 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 04:19:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5692 states. [2020-10-14 04:19:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5692 to 5688. [2020-10-14 04:19:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5688 states. [2020-10-14 04:19:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 7726 transitions. [2020-10-14 04:19:49,732 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 7726 transitions. Word has length 179 [2020-10-14 04:19:49,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:49,733 INFO L479 AbstractCegarLoop]: Abstraction has 5688 states and 7726 transitions. [2020-10-14 04:19:49,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:19:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 7726 transitions. [2020-10-14 04:19:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 04:19:49,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:49,738 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:19:49,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:19:49,738 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:49,739 INFO L82 PathProgramCache]: Analyzing trace with hash 273750323, now seen corresponding path program 1 times [2020-10-14 04:19:49,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:49,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861414287] [2020-10-14 04:19:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:49,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:52,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:52,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 04:19:52,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:19:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2727 [2020-10-14 04:19:52,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:52,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:19:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:19:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:52,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:52,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:52,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:19:52,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:52,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:19:52,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 04:19:52,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:52,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:52,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:52,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:19:52,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 04:19:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:52,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:19:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 04:19:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:52,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 04:19:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:19:52,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861414287] [2020-10-14 04:19:52,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:52,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:19:52,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668222292] [2020-10-14 04:19:52,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:19:52,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:19:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:19:52,951 INFO L87 Difference]: Start difference. First operand 5688 states and 7726 transitions. Second operand 7 states. [2020-10-14 04:20:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:03,190 INFO L93 Difference]: Finished difference Result 12907 states and 17895 transitions. [2020-10-14 04:20:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:20:03,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-14 04:20:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:03,231 INFO L225 Difference]: With dead ends: 12907 [2020-10-14 04:20:03,231 INFO L226 Difference]: Without dead ends: 7225 [2020-10-14 04:20:03,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:20:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7225 states. [2020-10-14 04:20:03,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7225 to 7209. [2020-10-14 04:20:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7209 states. [2020-10-14 04:20:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 9383 transitions. [2020-10-14 04:20:03,492 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 9383 transitions. Word has length 188 [2020-10-14 04:20:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:03,493 INFO L479 AbstractCegarLoop]: Abstraction has 7209 states and 9383 transitions. [2020-10-14 04:20:03,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:03,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 9383 transitions. [2020-10-14 04:20:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 04:20:03,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:03,497 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:20:03,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:20:03,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash -750828273, now seen corresponding path program 1 times [2020-10-14 04:20:03,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:03,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824770938] [2020-10-14 04:20:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:04,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 04:20:04,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-14 04:20:04,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:04,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:20:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:20:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:04,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:04,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:04,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:04,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:04,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:04,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:04,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:04,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:04,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:20:04,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:04,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:04,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:04,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:04,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:20:04,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:04,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:20:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:20:04,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824770938] [2020-10-14 04:20:04,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:04,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:04,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258357965] [2020-10-14 04:20:04,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:04,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:04,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:04,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:04,563 INFO L87 Difference]: Start difference. First operand 7209 states and 9383 transitions. Second operand 5 states. [2020-10-14 04:20:13,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:13,062 INFO L93 Difference]: Finished difference Result 21535 states and 28492 transitions. [2020-10-14 04:20:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:13,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 04:20:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:13,128 INFO L225 Difference]: With dead ends: 21535 [2020-10-14 04:20:13,128 INFO L226 Difference]: Without dead ends: 14332 [2020-10-14 04:20:13,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 04:20:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14332 states. [2020-10-14 04:20:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 14328. [2020-10-14 04:20:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14328 states. [2020-10-14 04:20:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14328 states to 14328 states and 17799 transitions. [2020-10-14 04:20:13,607 INFO L78 Accepts]: Start accepts. Automaton has 14328 states and 17799 transitions. Word has length 190 [2020-10-14 04:20:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:13,607 INFO L479 AbstractCegarLoop]: Abstraction has 14328 states and 17799 transitions. [2020-10-14 04:20:13,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 14328 states and 17799 transitions. [2020-10-14 04:20:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 04:20:13,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:13,612 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:20:13,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:20:13,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:13,613 INFO L82 PathProgramCache]: Analyzing trace with hash 939961414, now seen corresponding path program 1 times [2020-10-14 04:20:13,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:13,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274317611] [2020-10-14 04:20:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:15,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:15,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 04:20:15,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:15,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2301 [2020-10-14 04:20:15,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:15,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:20:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:20:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:16,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:16,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:16,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:20:16,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:16,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:16,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:16,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 04:20:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:16,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:20:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:16,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:16,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:20:16,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:16,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 04:20:16,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:16,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:20:16,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:16,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274317611] [2020-10-14 04:20:16,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:16,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:16,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067113239] [2020-10-14 04:20:16,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:16,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:16,436 INFO L87 Difference]: Start difference. First operand 14328 states and 17799 transitions. Second operand 7 states. [2020-10-14 04:20:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:29,552 INFO L93 Difference]: Finished difference Result 35421 states and 46197 transitions. [2020-10-14 04:20:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:20:29,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-14 04:20:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:29,640 INFO L225 Difference]: With dead ends: 35421 [2020-10-14 04:20:29,641 INFO L226 Difference]: Without dead ends: 21099 [2020-10-14 04:20:29,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:20:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21099 states. [2020-10-14 04:20:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21099 to 20976. [2020-10-14 04:20:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20976 states. [2020-10-14 04:20:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20976 states to 20976 states and 26036 transitions. [2020-10-14 04:20:30,143 INFO L78 Accepts]: Start accepts. Automaton has 20976 states and 26036 transitions. Word has length 191 [2020-10-14 04:20:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:30,144 INFO L479 AbstractCegarLoop]: Abstraction has 20976 states and 26036 transitions. [2020-10-14 04:20:30,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand 20976 states and 26036 transitions. [2020-10-14 04:20:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 04:20:30,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:30,150 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:20:30,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:20:30,151 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:30,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:30,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1357380146, now seen corresponding path program 1 times [2020-10-14 04:20:30,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:30,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516371546] [2020-10-14 04:20:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:34,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:34,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 04:20:34,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:34,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4740 [2020-10-14 04:20:34,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:34,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:20:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:20:34,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:34,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:35,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:35,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:35,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:20:35,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:20:35,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:35,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:20:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 04:20:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:35,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:35,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:20:35,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:20:35,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:35,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:20:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:35,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516371546] [2020-10-14 04:20:35,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:35,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:35,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848809380] [2020-10-14 04:20:35,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:35,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:35,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:35,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:35,310 INFO L87 Difference]: Start difference. First operand 20976 states and 26036 transitions. Second operand 7 states. [2020-10-14 04:20:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:46,512 INFO L93 Difference]: Finished difference Result 54346 states and 69551 transitions. [2020-10-14 04:20:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:20:46,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-14 04:20:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:46,600 INFO L225 Difference]: With dead ends: 54346 [2020-10-14 04:20:46,601 INFO L226 Difference]: Without dead ends: 26865 [2020-10-14 04:20:46,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:20:46,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26865 states. [2020-10-14 04:20:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26865 to 26102. [2020-10-14 04:20:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26102 states. [2020-10-14 04:20:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26102 states to 26102 states and 29167 transitions. [2020-10-14 04:20:48,284 INFO L78 Accepts]: Start accepts. Automaton has 26102 states and 29167 transitions. Word has length 197 [2020-10-14 04:20:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:48,284 INFO L479 AbstractCegarLoop]: Abstraction has 26102 states and 29167 transitions. [2020-10-14 04:20:48,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 26102 states and 29167 transitions. [2020-10-14 04:20:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 04:20:48,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:48,289 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:20:48,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:20:48,290 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:48,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1238595878, now seen corresponding path program 1 times [2020-10-14 04:20:48,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:48,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521861661] [2020-10-14 04:20:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:50,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 04:20:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2300 [2020-10-14 04:20:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:50,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:20:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:20:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:50,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:50,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:50,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:50,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:50,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:50,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:50,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:20:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 04:20:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:50,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:20:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:20:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:51,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:51,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:20:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 04:20:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:51,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:20:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:51,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521861661] [2020-10-14 04:20:51,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:51,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:51,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516910457] [2020-10-14 04:20:51,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:51,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:51,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:51,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:51,303 INFO L87 Difference]: Start difference. First operand 26102 states and 29167 transitions. Second operand 7 states. [2020-10-14 04:21:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:02,114 INFO L93 Difference]: Finished difference Result 62843 states and 70962 transitions. [2020-10-14 04:21:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:02,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-14 04:21:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:02,226 INFO L225 Difference]: With dead ends: 62843 [2020-10-14 04:21:02,226 INFO L226 Difference]: Without dead ends: 36747 [2020-10-14 04:21:02,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36747 states. [2020-10-14 04:21:03,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36747 to 36715. [2020-10-14 04:21:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36715 states. [2020-10-14 04:21:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36715 states to 36715 states and 40297 transitions. [2020-10-14 04:21:03,106 INFO L78 Accepts]: Start accepts. Automaton has 36715 states and 40297 transitions. Word has length 249 [2020-10-14 04:21:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:03,106 INFO L479 AbstractCegarLoop]: Abstraction has 36715 states and 40297 transitions. [2020-10-14 04:21:03,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36715 states and 40297 transitions. [2020-10-14 04:21:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 04:21:03,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:03,114 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 04:21:03,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:21:03,114 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:03,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:03,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1299980131, now seen corresponding path program 1 times [2020-10-14 04:21:03,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:03,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225617027] [2020-10-14 04:21:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:07,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:07,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 04:21:07,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4461 [2020-10-14 04:21:07,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:07,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:21:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:21:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:07,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:07,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:07,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:07,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:07,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:21:07,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:07,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:07,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:07,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:21:07,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:21:07,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:07,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:21:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:07,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:21:07,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 04:21:07,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:07,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:21:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:21:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:21:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:21:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:07,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 04:21:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 04:21:08,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225617027] [2020-10-14 04:21:08,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:08,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:08,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993302220] [2020-10-14 04:21:08,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:08,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:08,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:08,127 INFO L87 Difference]: Start difference. First operand 36715 states and 40297 transitions. Second operand 7 states. [2020-10-14 04:21:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:29,597 INFO L93 Difference]: Finished difference Result 83173 states and 95822 transitions. [2020-10-14 04:21:29,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:29,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 04:21:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:29,770 INFO L225 Difference]: With dead ends: 83173 [2020-10-14 04:21:29,771 INFO L226 Difference]: Without dead ends: 46464 [2020-10-14 04:21:29,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46464 states. [2020-10-14 04:21:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46464 to 45993. [2020-10-14 04:21:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45993 states. [2020-10-14 04:21:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45993 states to 45993 states and 50451 transitions. [2020-10-14 04:21:30,769 INFO L78 Accepts]: Start accepts. Automaton has 45993 states and 50451 transitions. Word has length 300 [2020-10-14 04:21:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:30,770 INFO L479 AbstractCegarLoop]: Abstraction has 45993 states and 50451 transitions. [2020-10-14 04:21:30,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 45993 states and 50451 transitions. [2020-10-14 04:21:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 04:21:30,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:30,781 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, 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, 3, 3, 3, 3, 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] [2020-10-14 04:21:30,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:21:30,782 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:30,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2080326686, now seen corresponding path program 1 times [2020-10-14 04:21:30,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:30,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025658559] [2020-10-14 04:21:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:30,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:35,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:35,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 04:21:35,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:21:35,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 04:21:35,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:35,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 04:21:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:21:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:35,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:35,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:35,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:35,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:35,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:21:35,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:21:35,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:35,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:21:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:21:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:21:36,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:21:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-14 04:21:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 04:21:36,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 04:21:36,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025658559] [2020-10-14 04:21:36,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:36,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:36,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852193592] [2020-10-14 04:21:36,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:36,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:36,269 INFO L87 Difference]: Start difference. First operand 45993 states and 50451 transitions. Second operand 7 states. [2020-10-14 04:21:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:47,056 INFO L93 Difference]: Finished difference Result 103699 states and 117526 transitions. [2020-10-14 04:21:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:21:47,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 04:21:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:47,178 INFO L225 Difference]: With dead ends: 103699 [2020-10-14 04:21:47,178 INFO L226 Difference]: Without dead ends: 57001 [2020-10-14 04:21:47,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57001 states. [2020-10-14 04:21:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57001 to 55233. [2020-10-14 04:21:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55233 states. [2020-10-14 04:21:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55233 states to 55233 states and 60657 transitions. [2020-10-14 04:21:48,122 INFO L78 Accepts]: Start accepts. Automaton has 55233 states and 60657 transitions. Word has length 337 [2020-10-14 04:21:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:48,123 INFO L479 AbstractCegarLoop]: Abstraction has 55233 states and 60657 transitions. [2020-10-14 04:21:48,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 55233 states and 60657 transitions. [2020-10-14 04:21:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-14 04:21:48,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:48,135 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:48,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:21:48,136 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:48,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2015267914, now seen corresponding path program 1 times [2020-10-14 04:21:48,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:48,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039761190] [2020-10-14 04:21:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:53,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-14 04:21:53,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5654 [2020-10-14 04:21:53,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:53,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:21:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:53,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:53,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:21:53,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:53,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:53,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:53,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:53,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:53,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:54,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:21:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:21:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:54,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:21:54,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:54,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:21:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 179 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:21:54,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039761190] [2020-10-14 04:21:54,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:54,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:54,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695861193] [2020-10-14 04:21:54,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:54,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:54,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:54,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:54,292 INFO L87 Difference]: Start difference. First operand 55233 states and 60657 transitions. Second operand 7 states. [2020-10-14 04:22:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:06,246 INFO L93 Difference]: Finished difference Result 123225 states and 136729 transitions. [2020-10-14 04:22:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:06,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-14 04:22:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:06,457 INFO L225 Difference]: With dead ends: 123225 [2020-10-14 04:22:06,457 INFO L226 Difference]: Without dead ends: 67998 [2020-10-14 04:22:06,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67998 states. [2020-10-14 04:22:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67998 to 66548. [2020-10-14 04:22:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66548 states. [2020-10-14 04:22:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66548 states to 66548 states and 72841 transitions. [2020-10-14 04:22:07,770 INFO L78 Accepts]: Start accepts. Automaton has 66548 states and 72841 transitions. Word has length 357 [2020-10-14 04:22:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:07,771 INFO L479 AbstractCegarLoop]: Abstraction has 66548 states and 72841 transitions. [2020-10-14 04:22:07,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 66548 states and 72841 transitions. [2020-10-14 04:22:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-14 04:22:07,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:07,787 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:22:07,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:22:07,788 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash 835232383, now seen corresponding path program 1 times [2020-10-14 04:22:07,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:07,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442540824] [2020-10-14 04:22:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:08,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 04:22:10,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2465 [2020-10-14 04:22:10,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:10,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:22:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 04:22:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:10,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:10,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:22:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:22:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:22:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:22:10,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:10,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 04:22:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:22:11,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442540824] [2020-10-14 04:22:11,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:11,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:11,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080533043] [2020-10-14 04:22:11,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:11,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:11,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:11,225 INFO L87 Difference]: Start difference. First operand 66548 states and 72841 transitions. Second operand 7 states. [2020-10-14 04:22:22,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:22,933 INFO L93 Difference]: Finished difference Result 142310 states and 156716 transitions. [2020-10-14 04:22:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:22:22,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-14 04:22:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:23,092 INFO L225 Difference]: With dead ends: 142310 [2020-10-14 04:22:23,093 INFO L226 Difference]: Without dead ends: 75761 [2020-10-14 04:22:23,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:23,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75761 states. [2020-10-14 04:22:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75761 to 75035. [2020-10-14 04:22:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75035 states. [2020-10-14 04:22:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75035 states to 75035 states and 82423 transitions. [2020-10-14 04:22:24,549 INFO L78 Accepts]: Start accepts. Automaton has 75035 states and 82423 transitions. Word has length 374 [2020-10-14 04:22:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:24,550 INFO L479 AbstractCegarLoop]: Abstraction has 75035 states and 82423 transitions. [2020-10-14 04:22:24,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 75035 states and 82423 transitions. [2020-10-14 04:22:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-14 04:22:24,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:24,556 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:24,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:22:24,557 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1836772526, now seen corresponding path program 1 times [2020-10-14 04:22:24,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:24,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896850807] [2020-10-14 04:22:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:25,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:29,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-14 04:22:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:22:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:22:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:29,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:22:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 04:22:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:29,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:29,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:22:29,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:29,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:29,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:29,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:22:29,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:29,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:22:29,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:29,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:22:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:29,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:22:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:29,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:29,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 04:22:29,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 04:22:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:29,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 04:22:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-14 04:22:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:30,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:30,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:22:30,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:22:30,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:30,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:22:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:30,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 189 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:22:30,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896850807] [2020-10-14 04:22:30,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:30,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:30,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155263643] [2020-10-14 04:22:30,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:30,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:30,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:30,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:30,222 INFO L87 Difference]: Start difference. First operand 75035 states and 82423 transitions. Second operand 7 states. [2020-10-14 04:22:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:43,832 INFO L93 Difference]: Finished difference Result 162859 states and 180272 transitions. [2020-10-14 04:22:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:43,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 455 [2020-10-14 04:22:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:44,021 INFO L225 Difference]: With dead ends: 162859 [2020-10-14 04:22:44,022 INFO L226 Difference]: Without dead ends: 88532 [2020-10-14 04:22:44,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88532 states. [2020-10-14 04:22:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88532 to 88524. [2020-10-14 04:22:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88524 states. [2020-10-14 04:22:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88524 states to 88524 states and 96776 transitions. [2020-10-14 04:22:45,120 INFO L78 Accepts]: Start accepts. Automaton has 88524 states and 96776 transitions. Word has length 455 [2020-10-14 04:22:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:45,121 INFO L479 AbstractCegarLoop]: Abstraction has 88524 states and 96776 transitions. [2020-10-14 04:22:45,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 88524 states and 96776 transitions. [2020-10-14 04:22:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-14 04:22:45,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:45,132 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:45,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:22:45,132 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1076226305, now seen corresponding path program 1 times [2020-10-14 04:22:45,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:45,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881154155] [2020-10-14 04:22:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking...