/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:35:36,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:35:36,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:35:36,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:35:36,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:35:36,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:35:36,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:35:36,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:35:36,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:35:36,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:35:36,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:35:36,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:35:36,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:35:36,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:35:36,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:35:36,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:35:36,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:35:36,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:35:36,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:35:36,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:35:36,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:35:36,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:35:36,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:35:36,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:35:36,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:35:36,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:35:36,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:35:36,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:35:36,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:35:36,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:35:36,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:35:36,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:35:36,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:35:36,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:35:36,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:35:36,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:35:36,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:35:36,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:35:36,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:35:36,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:35:36,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:35:36,866 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 03:35:36,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:35:36,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:35:36,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:35:36,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:35:36,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:35:36,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:35:36,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:35:36,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:35:36,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:35:36,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:35:36,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:35:36,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:35:36,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:35:36,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:35:36,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:35:36,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:35:36,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:35:36,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:35:36,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:35:36,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:35:36,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:35:36,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:35:36,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:35:36,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:35:36,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:35:36,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:35:36,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:35:36,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:35:36,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:35:36,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:35:37,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:35:37,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:35:37,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:35:37,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:35:37,265 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:35:37,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50.c [2020-10-14 03:35:37,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1905718c/ba62a199f4b74db1b2c3b8e7ec26c985/FLAGedce718eb [2020-10-14 03:35:37,890 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:35:37,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label50.c [2020-10-14 03:35:37,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1905718c/ba62a199f4b74db1b2c3b8e7ec26c985/FLAGedce718eb [2020-10-14 03:35:38,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1905718c/ba62a199f4b74db1b2c3b8e7ec26c985 [2020-10-14 03:35:38,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:35:38,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:35:38,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:35:38,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:35:38,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:35:38,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:35:38" (1/1) ... [2020-10-14 03:35:38,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:38, skipping insertion in model container [2020-10-14 03:35:38,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:35:38" (1/1) ... [2020-10-14 03:35:38,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:35:38,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:35:39,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:35:39,237 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:35:39,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:35:39,646 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:35:39,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39 WrapperNode [2020-10-14 03:35:39,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:35:39,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:35:39,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:35:39,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:35:39,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (1/1) ... [2020-10-14 03:35:39,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (1/1) ... [2020-10-14 03:35:39,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (1/1) ... [2020-10-14 03:35:39,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (1/1) ... [2020-10-14 03:35:39,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (1/1) ... [2020-10-14 03:35:39,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (1/1) ... [2020-10-14 03:35:39,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (1/1) ... [2020-10-14 03:35:39,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:35:39,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:35:39,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:35:39,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:35:39,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (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 03:35:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:35:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:35:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:35:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:35:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:35:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:35:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:35:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:35:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:35:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:35:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:35:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:35:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:35:46,366 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:35:46,367 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:35:46,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:35:46 BoogieIcfgContainer [2020-10-14 03:35:46,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:35:46,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:35:46,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:35:46,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:35:46,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:35:38" (1/3) ... [2020-10-14 03:35:46,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42db8435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:35:46, skipping insertion in model container [2020-10-14 03:35:46,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:39" (2/3) ... [2020-10-14 03:35:46,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42db8435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:35:46, skipping insertion in model container [2020-10-14 03:35:46,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:35:46" (3/3) ... [2020-10-14 03:35:46,386 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label50.c [2020-10-14 03:35:46,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:35:46,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:35:46,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:35:46,467 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:35:46,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:35:46,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:35:46,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:35:46,468 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:35:46,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:35:46,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:35:46,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:35:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:35:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 03:35:46,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:46,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:46,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:46,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:46,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1282983280, now seen corresponding path program 1 times [2020-10-14 03:35:46,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:46,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477761559] [2020-10-14 03:35:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:46,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:46,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 03:35:46,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:46,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 03:35:46,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:46,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:35:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:35:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:35:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:35:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:47,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:47,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:47,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:35:47,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:47,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:35:47,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:47,136 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 03:35:47,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477761559] [2020-10-14 03:35:47,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:35:47,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:35:47,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619392068] [2020-10-14 03:35:47,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:35:47,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:47,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:35:47,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:35:47,163 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:35:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:55,158 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:35:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:35:55,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 03:35:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:55,182 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:35:55,182 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:35:55,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:35:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:35:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:35:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:35:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:35:55,319 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 18 [2020-10-14 03:35:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:55,320 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:35:55,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:35:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:35:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 03:35:55,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:55,328 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:35:55,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:35:55,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash -629755948, now seen corresponding path program 1 times [2020-10-14 03:35:55,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:55,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069778368] [2020-10-14 03:35:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:55,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:56,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:56,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:35:56,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:35:56,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-14 03:35:56,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:56,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:35:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:35:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:35:56,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:56,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:56,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:56,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:56,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:35:56,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:56,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:56,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:56,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:56,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:56,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:35:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:35:56,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:56,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:35:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:35:56,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069778368] [2020-10-14 03:35:56,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:56,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:35:56,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326006944] [2020-10-14 03:35:56,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:35:57,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:57,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:35:57,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:35:57,001 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 03:36:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:03,180 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-14 03:36:03,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:36:03,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-14 03:36:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:03,190 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 03:36:03,190 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 03:36:03,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:36:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 03:36:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-14 03:36:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-14 03:36:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-14 03:36:03,258 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 87 [2020-10-14 03:36:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:03,259 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-14 03:36:03,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:36:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-14 03:36:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 03:36:03,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:03,275 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 03:36:03,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:36:03,276 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:03,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1951912439, now seen corresponding path program 1 times [2020-10-14 03:36:03,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:03,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259986433] [2020-10-14 03:36:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:05,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 03:36:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:36:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4675 [2020-10-14 03:36:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:08,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:36:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:36:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:08,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:08,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:08,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:36:08,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:08,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:08,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:08,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:08,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:36:08,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:08,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:08,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:08,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:08,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:36:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:08,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:08,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:08,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:36:08,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:36:08,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:08,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:36:08,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:08,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259986433] [2020-10-14 03:36:08,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:08,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:08,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189907855] [2020-10-14 03:36:08,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:08,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:08,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:08,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:08,523 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 7 states. [2020-10-14 03:36:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:17,923 INFO L93 Difference]: Finished difference Result 3598 states and 4784 transitions. [2020-10-14 03:36:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:36:17,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-14 03:36:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:17,950 INFO L225 Difference]: With dead ends: 3598 [2020-10-14 03:36:17,950 INFO L226 Difference]: Without dead ends: 2287 [2020-10-14 03:36:17,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:36:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-10-14 03:36:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1957. [2020-10-14 03:36:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-10-14 03:36:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2430 transitions. [2020-10-14 03:36:18,030 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2430 transitions. Word has length 192 [2020-10-14 03:36:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:18,034 INFO L479 AbstractCegarLoop]: Abstraction has 1957 states and 2430 transitions. [2020-10-14 03:36:18,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2430 transitions. [2020-10-14 03:36:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 03:36:18,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:18,044 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:18,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:36:18,052 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:18,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:18,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1913542295, now seen corresponding path program 1 times [2020-10-14 03:36:18,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:18,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106339940] [2020-10-14 03:36:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:18,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:23,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:23,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 03:36:23,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:36:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 03:36:23,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:23,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:36:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:36:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:23,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:23,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:23,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:23,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:36:23,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:23,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:23,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:23,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:23,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:23,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 03:36:23,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:23,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:36:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:36:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:23,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:23,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:36:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 03:36:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:23,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:36:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:23,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106339940] [2020-10-14 03:36:23,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:23,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:23,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251589896] [2020-10-14 03:36:23,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:23,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:23,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:23,964 INFO L87 Difference]: Start difference. First operand 1957 states and 2430 transitions. Second operand 7 states. [2020-10-14 03:36:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:34,167 INFO L93 Difference]: Finished difference Result 4937 states and 6316 transitions. [2020-10-14 03:36:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:36:34,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-14 03:36:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:34,186 INFO L225 Difference]: With dead ends: 4937 [2020-10-14 03:36:34,187 INFO L226 Difference]: Without dead ends: 2986 [2020-10-14 03:36:34,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:36:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-10-14 03:36:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2949. [2020-10-14 03:36:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2020-10-14 03:36:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3553 transitions. [2020-10-14 03:36:34,284 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3553 transitions. Word has length 298 [2020-10-14 03:36:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:34,288 INFO L479 AbstractCegarLoop]: Abstraction has 2949 states and 3553 transitions. [2020-10-14 03:36:34,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3553 transitions. [2020-10-14 03:36:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-14 03:36:34,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:34,294 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:34,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:36:34,295 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:34,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash -300295218, now seen corresponding path program 1 times [2020-10-14 03:36:34,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:34,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006272824] [2020-10-14 03:36:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:35,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:37,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:37,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 03:36:37,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:36:37,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2811 [2020-10-14 03:36:37,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:37,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:36:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 03:36:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:36:37,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:37,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:37,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:37,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:36:37,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:37,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:37,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:37,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:36:37,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:37,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:36:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:37,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:37,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-14 03:36:37,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:37,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:36:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:38,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006272824] [2020-10-14 03:36:38,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:38,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:38,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472078117] [2020-10-14 03:36:38,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:38,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:38,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:38,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:38,303 INFO L87 Difference]: Start difference. First operand 2949 states and 3553 transitions. Second operand 7 states. [2020-10-14 03:36:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:52,534 INFO L93 Difference]: Finished difference Result 8464 states and 10385 transitions. [2020-10-14 03:36:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:36:52,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-14 03:36:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:52,561 INFO L225 Difference]: With dead ends: 8464 [2020-10-14 03:36:52,561 INFO L226 Difference]: Without dead ends: 4552 [2020-10-14 03:36:52,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:36:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2020-10-14 03:36:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 3910. [2020-10-14 03:36:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3910 states. [2020-10-14 03:36:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 4414 transitions. [2020-10-14 03:36:52,686 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 4414 transitions. Word has length 313 [2020-10-14 03:36:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:52,687 INFO L479 AbstractCegarLoop]: Abstraction has 3910 states and 4414 transitions. [2020-10-14 03:36:52,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 4414 transitions. [2020-10-14 03:36:52,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 03:36:52,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:52,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:36:52,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:36:52,694 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:52,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:52,694 INFO L82 PathProgramCache]: Analyzing trace with hash -619282961, now seen corresponding path program 1 times [2020-10-14 03:36:52,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:52,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285395630] [2020-10-14 03:36:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:57,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:57,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 03:36:57,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:36:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 03:36:57,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:57,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:36:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:36:57,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:57,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:57,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:57,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:57,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:57,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:58,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:58,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:58,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 03:36:58,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:58,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:36:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:36:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:58,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:36:58,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 03:36:58,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:58,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:36:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:58,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285395630] [2020-10-14 03:36:58,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:58,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:58,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599349247] [2020-10-14 03:36:58,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:58,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:58,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:58,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:58,764 INFO L87 Difference]: Start difference. First operand 3910 states and 4414 transitions. Second operand 7 states. [2020-10-14 03:37:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:11,789 INFO L93 Difference]: Finished difference Result 10082 states and 11654 transitions. [2020-10-14 03:37:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:37:11,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-14 03:37:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:11,827 INFO L225 Difference]: With dead ends: 10082 [2020-10-14 03:37:11,827 INFO L226 Difference]: Without dead ends: 6178 [2020-10-14 03:37:11,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:37:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6178 states. [2020-10-14 03:37:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6178 to 6124. [2020-10-14 03:37:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6124 states. [2020-10-14 03:37:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 6929 transitions. [2020-10-14 03:37:11,999 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 6929 transitions. Word has length 329 [2020-10-14 03:37:12,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:12,000 INFO L479 AbstractCegarLoop]: Abstraction has 6124 states and 6929 transitions. [2020-10-14 03:37:12,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 6929 transitions. [2020-10-14 03:37:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-14 03:37:12,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:12,009 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:12,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:37:12,009 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:12,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1869607494, now seen corresponding path program 1 times [2020-10-14 03:37:12,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:12,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426050574] [2020-10-14 03:37:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-14 03:37:13,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:37:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-14 03:37:13,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:13,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:37:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:37:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:13,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:37:13,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:13,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:13,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:13,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:37:13,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 03:37:13,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:13,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:37:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:37:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:13,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:37:13,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:37:13,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:13,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:13,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:37:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:37:14,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426050574] [2020-10-14 03:37:14,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:14,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:37:14,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786392983] [2020-10-14 03:37:14,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:37:14,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:14,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:37:14,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:37:14,162 INFO L87 Difference]: Start difference. First operand 6124 states and 6929 transitions. Second operand 7 states. [2020-10-14 03:37:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:23,343 INFO L93 Difference]: Finished difference Result 13586 states and 15700 transitions. [2020-10-14 03:37:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:37:23,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-10-14 03:37:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:23,375 INFO L225 Difference]: With dead ends: 13586 [2020-10-14 03:37:23,375 INFO L226 Difference]: Without dead ends: 7468 [2020-10-14 03:37:23,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:37:23,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7468 states. [2020-10-14 03:37:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7468 to 7422. [2020-10-14 03:37:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7422 states. [2020-10-14 03:37:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 8366 transitions. [2020-10-14 03:37:23,540 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 8366 transitions. Word has length 377 [2020-10-14 03:37:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:23,541 INFO L479 AbstractCegarLoop]: Abstraction has 7422 states and 8366 transitions. [2020-10-14 03:37:23,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 8366 transitions. [2020-10-14 03:37:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-14 03:37:23,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:23,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:23,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:37:23,552 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:23,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1268653536, now seen corresponding path program 1 times [2020-10-14 03:37:23,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:23,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746694287] [2020-10-14 03:37:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 03:37:27,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:37:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-10-14 03:37:27,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 03:37:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:37:27,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:27,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:27,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:37:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:27,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:27,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:37:27,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:37:27,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 03:37:27,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:37:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:27,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:27,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 03:37:27,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:37:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:37:28,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746694287] [2020-10-14 03:37:28,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:28,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:37:28,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926333809] [2020-10-14 03:37:28,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:37:28,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:28,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:37:28,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:37:28,084 INFO L87 Difference]: Start difference. First operand 7422 states and 8366 transitions. Second operand 8 states. [2020-10-14 03:37:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:39,528 INFO L93 Difference]: Finished difference Result 17649 states and 20185 transitions. [2020-10-14 03:37:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:37:39,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 380 [2020-10-14 03:37:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:39,571 INFO L225 Difference]: With dead ends: 17649 [2020-10-14 03:37:39,571 INFO L226 Difference]: Without dead ends: 10233 [2020-10-14 03:37:39,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:37:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10233 states. [2020-10-14 03:37:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10233 to 9602. [2020-10-14 03:37:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9602 states. [2020-10-14 03:37:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9602 states to 9602 states and 10881 transitions. [2020-10-14 03:37:39,806 INFO L78 Accepts]: Start accepts. Automaton has 9602 states and 10881 transitions. Word has length 380 [2020-10-14 03:37:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:39,807 INFO L479 AbstractCegarLoop]: Abstraction has 9602 states and 10881 transitions. [2020-10-14 03:37:39,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:37:39,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9602 states and 10881 transitions. [2020-10-14 03:37:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 03:37:39,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:39,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:39,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:37:39,818 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:39,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:39,819 INFO L82 PathProgramCache]: Analyzing trace with hash 614623896, now seen corresponding path program 1 times [2020-10-14 03:37:39,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:39,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651794698] [2020-10-14 03:37:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:41,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:41,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:37:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:41,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:41,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:41,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:37:41,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:41,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:42,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:37:42,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 03:37:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:42,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:37:42,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:37:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:42,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:37:42,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:42,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:37:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:37:42,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651794698] [2020-10-14 03:37:42,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:42,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:37:42,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138001902] [2020-10-14 03:37:42,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:37:42,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:42,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:37:42,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:37:42,911 INFO L87 Difference]: Start difference. First operand 9602 states and 10881 transitions. Second operand 8 states. [2020-10-14 03:37:55,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:55,830 INFO L93 Difference]: Finished difference Result 21281 states and 25385 transitions. [2020-10-14 03:37:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 03:37:55,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 403 [2020-10-14 03:37:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:55,884 INFO L225 Difference]: With dead ends: 21281 [2020-10-14 03:37:55,884 INFO L226 Difference]: Without dead ends: 11685 [2020-10-14 03:37:55,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:37:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11685 states. [2020-10-14 03:37:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11685 to 11207. [2020-10-14 03:37:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11207 states. [2020-10-14 03:37:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11207 states to 11207 states and 12711 transitions. [2020-10-14 03:37:56,175 INFO L78 Accepts]: Start accepts. Automaton has 11207 states and 12711 transitions. Word has length 403 [2020-10-14 03:37:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:56,176 INFO L479 AbstractCegarLoop]: Abstraction has 11207 states and 12711 transitions. [2020-10-14 03:37:56,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:37:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11207 states and 12711 transitions. [2020-10-14 03:37:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-14 03:37:56,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:56,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:56,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:37:56,187 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:56,188 INFO L82 PathProgramCache]: Analyzing trace with hash 375935824, now seen corresponding path program 1 times [2020-10-14 03:37:56,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:56,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281768540] [2020-10-14 03:37:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-14 03:37:57,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-14 03:37:57,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:37:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:37:57,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:57,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:37:57,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:57,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:57,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:57,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:37:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 03:37:57,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:37:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:57,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:37:57,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:37:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 03:37:57,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281768540] [2020-10-14 03:37:57,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:57,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:37:57,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096968168] [2020-10-14 03:37:57,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:37:57,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:57,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:37:57,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:37:57,627 INFO L87 Difference]: Start difference. First operand 11207 states and 12711 transitions. Second operand 5 states. [2020-10-14 03:38:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:06,110 INFO L93 Difference]: Finished difference Result 26756 states and 30827 transitions. [2020-10-14 03:38:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:06,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-10-14 03:38:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:06,158 INFO L225 Difference]: With dead ends: 26756 [2020-10-14 03:38:06,159 INFO L226 Difference]: Without dead ends: 14307 [2020-10-14 03:38:06,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:38:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14307 states. [2020-10-14 03:38:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 13681. [2020-10-14 03:38:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13681 states. [2020-10-14 03:38:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13681 states to 13681 states and 15458 transitions. [2020-10-14 03:38:06,476 INFO L78 Accepts]: Start accepts. Automaton has 13681 states and 15458 transitions. Word has length 415 [2020-10-14 03:38:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:06,477 INFO L479 AbstractCegarLoop]: Abstraction has 13681 states and 15458 transitions. [2020-10-14 03:38:06,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 13681 states and 15458 transitions. [2020-10-14 03:38:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-14 03:38:06,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:06,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:06,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:38:06,494 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:06,495 INFO L82 PathProgramCache]: Analyzing trace with hash -918450669, now seen corresponding path program 1 times [2020-10-14 03:38:06,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:06,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312417719] [2020-10-14 03:38:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:06,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:09,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:09,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-14 03:38:09,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:38:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3173 [2020-10-14 03:38:09,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:09,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 478 [2020-10-14 03:38:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:38:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:09,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:09,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:09,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:09,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:09,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:09,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:09,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:09,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:09,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:38:09,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 03:38:09,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:09,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:38:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:09,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:10,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:10,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:10,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:10,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:38:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:10,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:38:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 03:38:10,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312417719] [2020-10-14 03:38:10,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:10,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:10,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095365787] [2020-10-14 03:38:10,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:10,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:10,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:10,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:10,277 INFO L87 Difference]: Start difference. First operand 13681 states and 15458 transitions. Second operand 5 states. [2020-10-14 03:38:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:18,708 INFO L93 Difference]: Finished difference Result 32366 states and 36946 transitions. [2020-10-14 03:38:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:18,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 482 [2020-10-14 03:38:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:18,771 INFO L225 Difference]: With dead ends: 32366 [2020-10-14 03:38:18,772 INFO L226 Difference]: Without dead ends: 18691 [2020-10-14 03:38:18,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 03:38:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18691 states. [2020-10-14 03:38:19,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18691 to 17748. [2020-10-14 03:38:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17748 states. [2020-10-14 03:38:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17748 states to 17748 states and 20163 transitions. [2020-10-14 03:38:19,122 INFO L78 Accepts]: Start accepts. Automaton has 17748 states and 20163 transitions. Word has length 482 [2020-10-14 03:38:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:19,124 INFO L479 AbstractCegarLoop]: Abstraction has 17748 states and 20163 transitions. [2020-10-14 03:38:19,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17748 states and 20163 transitions. [2020-10-14 03:38:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-14 03:38:19,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:19,134 INFO L422 BasicCegarLoop]: trace histogram [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, 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 03:38:19,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:38:19,134 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:19,135 INFO L82 PathProgramCache]: Analyzing trace with hash 959941446, now seen corresponding path program 1 times [2020-10-14 03:38:19,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:19,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506392128] [2020-10-14 03:38:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:24,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:24,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 03:38:24,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:38:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 03:38:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:24,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:38:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 03:38:24,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:24,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:24,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:24,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:24,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:38:24,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:24,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:24,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:24,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:24,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:38:24,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 03:38:24,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:24,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:38:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 03:38:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:25,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:25,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:38:25,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506392128] [2020-10-14 03:38:25,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:25,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:38:25,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235748706] [2020-10-14 03:38:25,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:38:25,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:25,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:38:25,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:25,498 INFO L87 Difference]: Start difference. First operand 17748 states and 20163 transitions. Second operand 7 states. [2020-10-14 03:38:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:35,484 INFO L93 Difference]: Finished difference Result 36735 states and 41676 transitions. [2020-10-14 03:38:35,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:38:35,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-14 03:38:35,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:35,542 INFO L225 Difference]: With dead ends: 36735 [2020-10-14 03:38:35,543 INFO L226 Difference]: Without dead ends: 18373 [2020-10-14 03:38:35,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:38:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18373 states. [2020-10-14 03:38:35,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18373 to 18366. [2020-10-14 03:38:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18366 states. [2020-10-14 03:38:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18366 states to 18366 states and 20752 transitions. [2020-10-14 03:38:35,902 INFO L78 Accepts]: Start accepts. Automaton has 18366 states and 20752 transitions. Word has length 506 [2020-10-14 03:38:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:35,903 INFO L479 AbstractCegarLoop]: Abstraction has 18366 states and 20752 transitions. [2020-10-14 03:38:35,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:38:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 18366 states and 20752 transitions. [2020-10-14 03:38:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-14 03:38:35,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:35,922 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:35,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:38:35,923 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash -292036047, now seen corresponding path program 1 times [2020-10-14 03:38:35,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:35,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484753868] [2020-10-14 03:38:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-14 03:38:38,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2106 [2020-10-14 03:38:38,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:38,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:38:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:38:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:38:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:38,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:38,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:38,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:38,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:38,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:38,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:38,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:38,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:38,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:38,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:38:38,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-14 03:38:38,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:38,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:38:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:38:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:39,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:39,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:38:39,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 03:38:39,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:39,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:38:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:38:39,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:38:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:39,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 03:38:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 03:38:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:39,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 03:38:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 391 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 03:38:40,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484753868] [2020-10-14 03:38:40,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:40,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 03:38:40,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859223278] [2020-10-14 03:38:40,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 03:38:40,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 03:38:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:38:40,372 INFO L87 Difference]: Start difference. First operand 18366 states and 20752 transitions. Second operand 10 states. [2020-10-14 03:38:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:50,343 INFO L93 Difference]: Finished difference Result 37708 states and 42523 transitions. [2020-10-14 03:38:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 03:38:50,347 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 564 [2020-10-14 03:38:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:50,392 INFO L225 Difference]: With dead ends: 37708 [2020-10-14 03:38:50,392 INFO L226 Difference]: Without dead ends: 19348 [2020-10-14 03:38:50,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2020-10-14 03:38:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19348 states. [2020-10-14 03:38:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19348 to 19333. [2020-10-14 03:38:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19333 states. [2020-10-14 03:38:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19333 states to 19333 states and 21731 transitions. [2020-10-14 03:38:50,714 INFO L78 Accepts]: Start accepts. Automaton has 19333 states and 21731 transitions. Word has length 564 [2020-10-14 03:38:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:50,716 INFO L479 AbstractCegarLoop]: Abstraction has 19333 states and 21731 transitions. [2020-10-14 03:38:50,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 03:38:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19333 states and 21731 transitions. [2020-10-14 03:38:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-14 03:38:50,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:50,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:50,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:38:50,748 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:50,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash 448582364, now seen corresponding path program 1 times [2020-10-14 03:38:50,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:50,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386387890] [2020-10-14 03:38:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:53,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 625 [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 354 [2020-10-14 03:38:55,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 03:38:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:56,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:56,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:56,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:38:56,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:56,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 03:38:56,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:56,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:56,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:38:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:56,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:38:56,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 03:38:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:56,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:38:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:56,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-14 03:38:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:56,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:38:56,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 03:38:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:56,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 03:38:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 03:38:57,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386387890] [2020-10-14 03:38:57,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:57,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:38:57,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255384177] [2020-10-14 03:38:57,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:38:57,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:57,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:38:57,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:57,120 INFO L87 Difference]: Start difference. First operand 19333 states and 21731 transitions. Second operand 7 states. [2020-10-14 03:39:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:05,992 INFO L93 Difference]: Finished difference Result 38974 states and 43783 transitions. [2020-10-14 03:39:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:39:05,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 611 [2020-10-14 03:39:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:06,038 INFO L225 Difference]: With dead ends: 38974 [2020-10-14 03:39:06,038 INFO L226 Difference]: Without dead ends: 19019 [2020-10-14 03:39:06,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19019 states. [2020-10-14 03:39:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19019 to 19012. [2020-10-14 03:39:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19012 states. [2020-10-14 03:39:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19012 states to 19012 states and 21261 transitions. [2020-10-14 03:39:06,366 INFO L78 Accepts]: Start accepts. Automaton has 19012 states and 21261 transitions. Word has length 611 [2020-10-14 03:39:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:06,367 INFO L479 AbstractCegarLoop]: Abstraction has 19012 states and 21261 transitions. [2020-10-14 03:39:06,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 19012 states and 21261 transitions. [2020-10-14 03:39:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-14 03:39:06,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:06,384 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:06,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:39:06,384 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:06,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2078834272, now seen corresponding path program 1 times [2020-10-14 03:39:06,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:06,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878631017] [2020-10-14 03:39:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:11,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 636 [2020-10-14 03:39:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 03:39:11,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:11,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 462 [2020-10-14 03:39:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:39:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:11,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:11,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:11,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:11,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:39:11,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:11,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:11,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:39:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:11,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:11,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:39:11,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:11,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:39:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:11,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:39:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:11,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:11,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:39:11,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:11,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 03:39:11,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:11,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:39:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-10-14 03:39:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:11,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:12,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:12,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:39:12,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:12,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 03:39:12,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:12,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 03:39:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 433 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-14 03:39:12,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878631017] [2020-10-14 03:39:12,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:12,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:39:12,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704532075] [2020-10-14 03:39:12,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:12,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:12,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:12,280 INFO L87 Difference]: Start difference. First operand 19012 states and 21261 transitions. Second operand 7 states. [2020-10-14 03:39:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:21,071 INFO L93 Difference]: Finished difference Result 37705 states and 42442 transitions. [2020-10-14 03:39:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:39:21,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 620 [2020-10-14 03:39:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:21,119 INFO L225 Difference]: With dead ends: 37705 [2020-10-14 03:39:21,119 INFO L226 Difference]: Without dead ends: 18699 [2020-10-14 03:39:21,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18699 states. [2020-10-14 03:39:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18699 to 17145. [2020-10-14 03:39:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17145 states. [2020-10-14 03:39:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17145 states to 17145 states and 18837 transitions. [2020-10-14 03:39:21,405 INFO L78 Accepts]: Start accepts. Automaton has 17145 states and 18837 transitions. Word has length 620 [2020-10-14 03:39:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:21,406 INFO L479 AbstractCegarLoop]: Abstraction has 17145 states and 18837 transitions. [2020-10-14 03:39:21,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 17145 states and 18837 transitions. [2020-10-14 03:39:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-14 03:39:21,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:21,421 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:21,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:39:21,421 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2062735187, now seen corresponding path program 1 times [2020-10-14 03:39:21,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:21,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278244734] [2020-10-14 03:39:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking...