/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem04_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:24:29,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:24:29,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:24:29,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:24:29,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:24:29,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:24:29,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:24:29,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:24:29,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:24:29,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:24:29,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:24:29,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:24:29,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:24:29,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:24:29,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:24:29,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:24:29,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:24:29,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:24:29,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:24:29,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:24:29,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:24:29,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:24:29,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:24:29,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:24:29,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:24:29,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:24:29,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:24:29,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:24:29,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:24:29,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:24:29,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:24:29,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:24:29,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:24:29,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:24:29,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:24:29,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:24:29,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:24:29,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:24:29,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:24:29,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:24:29,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:24:29,869 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 19:24:29,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:24:29,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:24:29,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:24:29,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:24:29,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:24:29,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:24:29,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:24:29,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:24:29,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:24:29,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:24:29,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:24:29,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:24:29,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:24:29,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:24:29,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:24:29,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:24:29,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:24:29,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:24:29,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:24:29,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:24:29,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:24:29,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:24:29,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:24:29,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:24:29,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:24:29,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:24:29,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:24:29,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:24:29,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:24:29,897 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:24:30,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:24:30,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:24:30,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:24:30,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:24:30,210 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:24:30,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-14 19:24:30,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4b59f3d9/d4f43f8d0deb434790f8f4f5e79977ff/FLAG77d16a96d [2020-10-14 19:24:31,114 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:24:31,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-14 19:24:31,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4b59f3d9/d4f43f8d0deb434790f8f4f5e79977ff/FLAG77d16a96d [2020-10-14 19:24:31,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4b59f3d9/d4f43f8d0deb434790f8f4f5e79977ff [2020-10-14 19:24:31,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:24:31,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:24:31,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:24:31,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:24:31,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:24:31,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:24:31" (1/1) ... [2020-10-14 19:24:31,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:31, skipping insertion in model container [2020-10-14 19:24:31,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:24:31" (1/1) ... [2020-10-14 19:24:31,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:24:31,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:24:33,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:24:33,415 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:24:34,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:24:34,198 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:24:34,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34 WrapperNode [2020-10-14 19:24:34,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:24:34,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:24:34,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:24:34,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:24:34,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2020-10-14 19:24:34,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2020-10-14 19:24:34,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2020-10-14 19:24:34,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2020-10-14 19:24:34,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2020-10-14 19:24:34,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2020-10-14 19:24:34,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2020-10-14 19:24:34,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:24:34,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:24:34,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:24:34,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:24:34,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:24:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:24:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:24:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:24:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:24:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:24:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:24:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:24:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:24:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:24:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:24:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:24:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:24:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:24:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:24:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:24:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:24:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:24:38,799 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:24:38,799 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:24:38,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:24:38 BoogieIcfgContainer [2020-10-14 19:24:38,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:24:38,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:24:38,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:24:38,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:24:38,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:24:31" (1/3) ... [2020-10-14 19:24:38,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a129ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:24:38, skipping insertion in model container [2020-10-14 19:24:38,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (2/3) ... [2020-10-14 19:24:38,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a129ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:24:38, skipping insertion in model container [2020-10-14 19:24:38,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:24:38" (3/3) ... [2020-10-14 19:24:38,835 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label26.c [2020-10-14 19:24:38,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:24:38,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:24:38,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:24:38,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:24:38,928 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:24:38,928 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:24:38,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:24:38,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:24:38,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:24:38,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:24:38,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:24:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:24:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-10-14 19:24:39,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:24:39,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:39,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:24:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:24:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash -323397917, now seen corresponding path program 1 times [2020-10-14 19:24:39,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:24:39,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404339910] [2020-10-14 19:24:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:24:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:42,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:44,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:44,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 794 [2020-10-14 19:24:44,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:24:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 19:24:44,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:44,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:24:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:24:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 788 [2020-10-14 19:24:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:24:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:24:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:45,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:45,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:24:45,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:24:45,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:24:45,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:24:45,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:24:45,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:24:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:24:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:24:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:24:45,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:24:46,893 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 19:24:46,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404339910] [2020-10-14 19:24:46,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:24:46,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:24:46,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411365815] [2020-10-14 19:24:46,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:24:46,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:24:46,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:24:46,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:24:46,935 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:24:55,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:24:55,461 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2020-10-14 19:24:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:24:55,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 780 [2020-10-14 19:24:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:24:55,518 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:24:55,519 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:24:55,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:24:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:24:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2020-10-14 19:24:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-14 19:24:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2973 transitions. [2020-10-14 19:24:55,741 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2973 transitions. Word has length 780 [2020-10-14 19:24:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:24:55,747 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2973 transitions. [2020-10-14 19:24:55,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:24:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2973 transitions. [2020-10-14 19:24:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2020-10-14 19:24:55,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:24:55,776 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:55,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:24:55,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:24:55,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:24:55,777 INFO L82 PathProgramCache]: Analyzing trace with hash -353435832, now seen corresponding path program 1 times [2020-10-14 19:24:55,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:24:55,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684262852] [2020-10-14 19:24:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:24:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:24:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:00,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:00,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-14 19:25:00,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:25:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 19:25:00,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:00,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:25:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:25:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-14 19:25:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 19:25:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:01,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:01,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:01,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:25:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:01,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:01,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:01,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:25:01,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:25:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:01,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:25:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:25:02,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684262852] [2020-10-14 19:25:02,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:02,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:25:02,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194567122] [2020-10-14 19:25:02,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:25:02,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:02,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:25:02,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:25:02,498 INFO L87 Difference]: Start difference. First operand 1687 states and 2973 transitions. Second operand 5 states. [2020-10-14 19:25:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:09,348 INFO L93 Difference]: Finished difference Result 5073 states and 9003 transitions. [2020-10-14 19:25:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:25:09,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 789 [2020-10-14 19:25:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:09,377 INFO L225 Difference]: With dead ends: 5073 [2020-10-14 19:25:09,377 INFO L226 Difference]: Without dead ends: 3392 [2020-10-14 19:25:09,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:25:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-14 19:25:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3379. [2020-10-14 19:25:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-10-14 19:25:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 5708 transitions. [2020-10-14 19:25:09,497 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 5708 transitions. Word has length 789 [2020-10-14 19:25:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:09,500 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 5708 transitions. [2020-10-14 19:25:09,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:25:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 5708 transitions. [2020-10-14 19:25:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-14 19:25:09,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:09,529 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:09,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:25:09,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:09,530 INFO L82 PathProgramCache]: Analyzing trace with hash 547911194, now seen corresponding path program 1 times [2020-10-14 19:25:09,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:09,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274226396] [2020-10-14 19:25:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:14,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:14,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-14 19:25:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:25:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:25:14,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:14,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:25:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:25:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-14 19:25:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:15,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:15,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:15,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:25:15,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:15,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:15,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:15,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:15,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:25:15,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:15,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:25:15,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:15,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:25:15,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:25:15,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274226396] [2020-10-14 19:25:15,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:15,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:25:15,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994418744] [2020-10-14 19:25:15,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:25:15,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:15,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:25:15,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:25:15,811 INFO L87 Difference]: Start difference. First operand 3379 states and 5708 transitions. Second operand 5 states. [2020-10-14 19:25:23,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:23,702 INFO L93 Difference]: Finished difference Result 10151 states and 17364 transitions. [2020-10-14 19:25:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:25:23,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 800 [2020-10-14 19:25:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:23,746 INFO L225 Difference]: With dead ends: 10151 [2020-10-14 19:25:23,746 INFO L226 Difference]: Without dead ends: 6778 [2020-10-14 19:25:23,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:25:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2020-10-14 19:25:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 6774. [2020-10-14 19:25:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6774 states. [2020-10-14 19:25:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 10872 transitions. [2020-10-14 19:25:23,928 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 10872 transitions. Word has length 800 [2020-10-14 19:25:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:23,930 INFO L479 AbstractCegarLoop]: Abstraction has 6774 states and 10872 transitions. [2020-10-14 19:25:23,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:25:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 10872 transitions. [2020-10-14 19:25:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-14 19:25:23,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:23,955 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:23,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:25:23,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash 18363305, now seen corresponding path program 1 times [2020-10-14 19:25:23,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:23,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754270906] [2020-10-14 19:25:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:29,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:29,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 863 [2020-10-14 19:25:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:25:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 19:25:29,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:29,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:25:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 19:25:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 568 [2020-10-14 19:25:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:31,337 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-14 19:25:32,041 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-14 19:25:32,189 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-10-14 19:25:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:32,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:25:32,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:32,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:32,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:32,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:25:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:25:32,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:32,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:32,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 19:25:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:25:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 19:25:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:32,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 19:25:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 19:25:37,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754270906] [2020-10-14 19:25:37,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:37,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:25:37,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861296137] [2020-10-14 19:25:37,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:25:37,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:37,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:25:37,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:25:37,777 INFO L87 Difference]: Start difference. First operand 6774 states and 10872 transitions. Second operand 17 states. [2020-10-14 19:25:38,483 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:25:39,281 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 19:25:39,838 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 19:25:42,440 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:25:42,910 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 19:25:43,050 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 19:25:45,266 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 19:25:45,774 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-14 19:25:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:50,485 INFO L93 Difference]: Finished difference Result 14120 states and 22926 transitions. [2020-10-14 19:25:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:25:50,486 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 845 [2020-10-14 19:25:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:50,520 INFO L225 Difference]: With dead ends: 14120 [2020-10-14 19:25:50,520 INFO L226 Difference]: Without dead ends: 7352 [2020-10-14 19:25:50,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:25:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2020-10-14 19:25:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7346. [2020-10-14 19:25:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7346 states. [2020-10-14 19:25:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 11462 transitions. [2020-10-14 19:25:50,765 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 11462 transitions. Word has length 845 [2020-10-14 19:25:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:50,767 INFO L479 AbstractCegarLoop]: Abstraction has 7346 states and 11462 transitions. [2020-10-14 19:25:50,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:25:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 11462 transitions. [2020-10-14 19:25:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2020-10-14 19:25:50,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:50,814 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:50,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:25:50,814 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:50,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:50,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1494423137, now seen corresponding path program 1 times [2020-10-14 19:25:50,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:50,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954088690] [2020-10-14 19:25:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:55,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:55,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 875 [2020-10-14 19:25:55,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:25:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:25:55,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:55,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:25:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 19:25:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-14 19:25:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:56,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:56,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:56,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:25:56,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:56,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:56,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:56,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:25:56,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:25:56,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:56,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:25:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:56,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:56,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:25:56,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 19:25:56,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:56,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 19:25:56,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 19:25:57,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954088690] [2020-10-14 19:25:57,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:57,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:25:57,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561540238] [2020-10-14 19:25:57,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:25:57,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:25:57,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:25:57,346 INFO L87 Difference]: Start difference. First operand 7346 states and 11462 transitions. Second operand 5 states. [2020-10-14 19:26:05,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:26:05,967 INFO L93 Difference]: Finished difference Result 21451 states and 34372 transitions. [2020-10-14 19:26:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:26:05,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 857 [2020-10-14 19:26:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:26:06,035 INFO L225 Difference]: With dead ends: 21451 [2020-10-14 19:26:06,035 INFO L226 Difference]: Without dead ends: 14111 [2020-10-14 19:26:06,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:26:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14111 states. [2020-10-14 19:26:06,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14111 to 14107. [2020-10-14 19:26:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14107 states. [2020-10-14 19:26:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14107 states to 14107 states and 20169 transitions. [2020-10-14 19:26:06,424 INFO L78 Accepts]: Start accepts. Automaton has 14107 states and 20169 transitions. Word has length 857 [2020-10-14 19:26:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:26:06,425 INFO L479 AbstractCegarLoop]: Abstraction has 14107 states and 20169 transitions. [2020-10-14 19:26:06,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:26:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 14107 states and 20169 transitions. [2020-10-14 19:26:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2020-10-14 19:26:06,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:26:06,474 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:06,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:26:06,475 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:26:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:26:06,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1595980079, now seen corresponding path program 1 times [2020-10-14 19:26:06,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:26:06,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114476364] [2020-10-14 19:26:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:26:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:11,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:11,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 902 [2020-10-14 19:26:11,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:26:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 19:26:11,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:11,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:26:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-14 19:26:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-14 19:26:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:13,380 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-14 19:26:13,573 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-14 19:26:14,015 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-14 19:26:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:26:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:14,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:14,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:26:14,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:26:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:14,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:26:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:14,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:26:14,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:26:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:14,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:26:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:14,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:14,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:26:14,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 19:26:14,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:14,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:26:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 19:26:21,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114476364] [2020-10-14 19:26:21,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:21,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:26:21,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909979156] [2020-10-14 19:26:21,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:26:21,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:21,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:26:21,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:26:21,439 INFO L87 Difference]: Start difference. First operand 14107 states and 20169 transitions. Second operand 17 states. [2020-10-14 19:26:22,288 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:26:22,466 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 19:26:27,395 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:26:27,588 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 19:26:30,677 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 19:26:31,441 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 19:26:32,916 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 19:26:33,336 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-10-14 19:26:36,690 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2020-10-14 19:26:37,146 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2020-10-14 19:26:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:26:38,988 INFO L93 Difference]: Finished difference Result 28875 states and 41738 transitions. [2020-10-14 19:26:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:26:38,989 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 884 [2020-10-14 19:26:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:26:39,051 INFO L225 Difference]: With dead ends: 28875 [2020-10-14 19:26:39,052 INFO L226 Difference]: Without dead ends: 14774 [2020-10-14 19:26:39,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:26:39,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14774 states. [2020-10-14 19:26:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14774 to 14770. [2020-10-14 19:26:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14770 states. [2020-10-14 19:26:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14770 states to 14770 states and 20849 transitions. [2020-10-14 19:26:39,432 INFO L78 Accepts]: Start accepts. Automaton has 14770 states and 20849 transitions. Word has length 884 [2020-10-14 19:26:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:26:39,434 INFO L479 AbstractCegarLoop]: Abstraction has 14770 states and 20849 transitions. [2020-10-14 19:26:39,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:26:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 14770 states and 20849 transitions. [2020-10-14 19:26:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-14 19:26:39,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:26:39,483 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:39,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:26:39,483 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:26:39,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:26:39,484 INFO L82 PathProgramCache]: Analyzing trace with hash 517462859, now seen corresponding path program 1 times [2020-10-14 19:26:39,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:26:39,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377026757] [2020-10-14 19:26:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:26:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:40,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:44,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:44,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-14 19:26:44,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:26:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 19:26:44,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:44,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:26:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 19:26:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 19:26:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:26:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:45,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:26:45,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:26:45,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:45,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:26:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:26:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:26:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:45,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 19:26:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:45,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:45,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:26:45,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:45,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:26:45,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:45,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:45,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:45,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:45,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:26:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:26:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:45,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:26:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 19:26:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:45,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:26:45,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 19:26:45,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:45,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:26:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 19:26:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 182 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 19:26:45,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377026757] [2020-10-14 19:26:45,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:45,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:26:45,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062923516] [2020-10-14 19:26:45,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:26:45,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:45,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:26:45,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:26:45,516 INFO L87 Difference]: Start difference. First operand 14770 states and 20849 transitions. Second operand 8 states. [2020-10-14 19:27:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:02,124 INFO L93 Difference]: Finished difference Result 43121 states and 63794 transitions. [2020-10-14 19:27:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:27:02,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 903 [2020-10-14 19:27:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:02,245 INFO L225 Difference]: With dead ends: 43121 [2020-10-14 19:27:02,246 INFO L226 Difference]: Without dead ends: 28357 [2020-10-14 19:27:02,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:27:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28357 states. [2020-10-14 19:27:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28357 to 27802. [2020-10-14 19:27:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27802 states. [2020-10-14 19:27:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27802 states to 27802 states and 39264 transitions. [2020-10-14 19:27:02,952 INFO L78 Accepts]: Start accepts. Automaton has 27802 states and 39264 transitions. Word has length 903 [2020-10-14 19:27:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:02,952 INFO L479 AbstractCegarLoop]: Abstraction has 27802 states and 39264 transitions. [2020-10-14 19:27:02,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:27:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 27802 states and 39264 transitions. [2020-10-14 19:27:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2020-10-14 19:27:03,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:03,053 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:27:03,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:27:03,054 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1142724306, now seen corresponding path program 1 times [2020-10-14 19:27:03,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:03,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763723107] [2020-10-14 19:27:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1440 [2020-10-14 19:27:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:27:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-14 19:27:08,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:08,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:27:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 19:27:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 514 [2020-10-14 19:27:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:08,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:08,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:08,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:08,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:27:08,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:08,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:08,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:27:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:27:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:27:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:08,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 19:27:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:08,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:08,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:27:08,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:08,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:27:08,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:08,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:08,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:08,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:27:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:08,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:08,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:27:08,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:27:08,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:08,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 19:27:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:08,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:08,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:27:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:27:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:08,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:27:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:08,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 19:27:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:09,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:09,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 19:27:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-14 19:27:09,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:09,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:27:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 518 [2020-10-14 19:27:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:09,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:27:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:10,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 19:27:10,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-14 19:27:10,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:10,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:27:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 291 [2020-10-14 19:27:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:27:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:10,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:10,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:27:10,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 19:27:10,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:10,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:27:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:27:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 733 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 19:27:12,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763723107] [2020-10-14 19:27:12,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:27:12,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:27:12,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878351107] [2020-10-14 19:27:12,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:27:12,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:27:12,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:27:12,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:27:12,409 INFO L87 Difference]: Start difference. First operand 27802 states and 39264 transitions. Second operand 7 states. [2020-10-14 19:27:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:27,298 INFO L93 Difference]: Finished difference Result 62509 states and 88090 transitions. [2020-10-14 19:27:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:27:27,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1412 [2020-10-14 19:27:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:27,413 INFO L225 Difference]: With dead ends: 62509 [2020-10-14 19:27:27,413 INFO L226 Difference]: Without dead ends: 34717 [2020-10-14 19:27:27,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:27:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34717 states. [2020-10-14 19:27:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34717 to 34710. [2020-10-14 19:27:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34710 states. [2020-10-14 19:27:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34710 states to 34710 states and 45656 transitions. [2020-10-14 19:27:28,509 INFO L78 Accepts]: Start accepts. Automaton has 34710 states and 45656 transitions. Word has length 1412 [2020-10-14 19:27:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:28,510 INFO L479 AbstractCegarLoop]: Abstraction has 34710 states and 45656 transitions. [2020-10-14 19:27:28,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:27:28,510 INFO L276 IsEmpty]: Start isEmpty. Operand 34710 states and 45656 transitions. [2020-10-14 19:27:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1419 [2020-10-14 19:27:28,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:28,670 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:27:28,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:27:28,671 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash 384609503, now seen corresponding path program 1 times [2020-10-14 19:27:28,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:28,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344978677] [2020-10-14 19:27:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:30,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:33,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1444 [2020-10-14 19:27:33,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:27:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 19:27:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:33,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:27:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 19:27:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 514 [2020-10-14 19:27:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:34,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:34,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:34,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:27:34,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:34,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:34,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:27:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:34,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:27:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:27:34,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:34,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 19:27:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 19:27:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:27:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:34,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:34,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 19:27:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:34,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:34,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:27:34,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:34,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:27:34,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:34,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:27:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 19:27:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:35,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:35,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 19:27:35,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-14 19:27:35,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:35,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:27:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 518 [2020-10-14 19:27:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:27:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 291 [2020-10-14 19:27:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:27:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:36,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:36,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:27:36,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 19:27:36,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:36,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:27:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:27:36,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 746 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-14 19:27:37,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344978677] [2020-10-14 19:27:37,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:27:37,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:27:37,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113345754] [2020-10-14 19:27:37,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:27:37,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:27:37,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:27:37,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:27:37,179 INFO L87 Difference]: Start difference. First operand 34710 states and 45656 transitions. Second operand 8 states. [2020-10-14 19:27:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:54,389 INFO L93 Difference]: Finished difference Result 116547 states and 162510 transitions. [2020-10-14 19:27:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:27:54,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1418 [2020-10-14 19:27:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:54,719 INFO L225 Difference]: With dead ends: 116547 [2020-10-14 19:27:54,719 INFO L226 Difference]: Without dead ends: 81847 [2020-10-14 19:27:54,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:27:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81847 states. [2020-10-14 19:27:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81847 to 80078. [2020-10-14 19:27:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80078 states. [2020-10-14 19:27:56,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80078 states to 80078 states and 103788 transitions. [2020-10-14 19:27:56,523 INFO L78 Accepts]: Start accepts. Automaton has 80078 states and 103788 transitions. Word has length 1418 [2020-10-14 19:27:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:56,524 INFO L479 AbstractCegarLoop]: Abstraction has 80078 states and 103788 transitions. [2020-10-14 19:27:56,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:27:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 80078 states and 103788 transitions. [2020-10-14 19:27:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2020-10-14 19:27:56,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:56,769 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:27:56,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:27:56,770 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:56,771 INFO L82 PathProgramCache]: Analyzing trace with hash 446942714, now seen corresponding path program 1 times [2020-10-14 19:27:56,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:56,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756436137] [2020-10-14 19:27:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:56,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1669 [2020-10-14 19:28:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:28:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 19:28:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:01,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:28:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-10-14 19:28:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 587 [2020-10-14 19:28:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:02,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:02,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:02,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:28:02,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:02,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:02,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:02,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 19:28:02,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:28:02,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:02,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:02,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 19:28:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:02,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:02,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:28:02,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:02,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:28:02,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:02,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 19:28:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:28:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:28:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:02,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:02,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 19:28:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:02,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:02,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 19:28:02,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 19:28:02,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:02,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 19:28:02,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 19:28:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat