/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:03,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:03,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:03,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:03,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:03,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:03,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:03,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:03,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:03,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:03,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:03,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:03,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:03,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:03,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:03,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:03,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:03,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:03,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:03,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:03,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:03,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:03,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:03,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:03,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:03,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:03,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:03,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:03,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:03,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:03,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:03,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:03,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:03,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:03,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:03,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:03,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:03,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:03,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:03,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:03,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:03,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:29:03,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:03,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:03,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:03,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:03,714 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:03,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:03,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:03,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:03,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:03,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:03,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:03,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:03,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:03,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:03,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:03,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:03,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:03,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:03,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:03,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:03,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:03,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:03,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:03,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:03,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:03,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:03,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:03,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:03,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:03,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:29:04,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:04,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:04,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:04,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:04,254 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:04,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 04:29:04,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3adeda26f/a8eb8632735d4b689b80a3c87c965f8a/FLAGdfc5a3ee2 [2020-09-25 04:29:04,992 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:04,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 04:29:05,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3adeda26f/a8eb8632735d4b689b80a3c87c965f8a/FLAGdfc5a3ee2 [2020-09-25 04:29:05,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3adeda26f/a8eb8632735d4b689b80a3c87c965f8a [2020-09-25 04:29:05,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:05,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:05,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:05,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:05,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:05,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:05" (1/1) ... [2020-09-25 04:29:05,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d084142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:05, skipping insertion in model container [2020-09-25 04:29:05,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:05" (1/1) ... [2020-09-25 04:29:05,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:05,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:05,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:05,827 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:06,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:06,067 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:06,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06 WrapperNode [2020-09-25 04:29:06,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:06,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:06,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:06,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:06,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... [2020-09-25 04:29:06,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... [2020-09-25 04:29:06,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... [2020-09-25 04:29:06,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... [2020-09-25 04:29:06,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... [2020-09-25 04:29:06,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... [2020-09-25 04:29:06,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... [2020-09-25 04:29:06,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:06,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:06,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:06,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:06,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:07,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:07,664 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:07,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:07 BoogieIcfgContainer [2020-09-25 04:29:07,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:07,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:07,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:07,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:07,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:05" (1/3) ... [2020-09-25 04:29:07,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cafbccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:07, skipping insertion in model container [2020-09-25 04:29:07,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:06" (2/3) ... [2020-09-25 04:29:07,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cafbccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:07, skipping insertion in model container [2020-09-25 04:29:07,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:07" (3/3) ... [2020-09-25 04:29:07,687 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 04:29:07,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:07,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:07,741 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:07,787 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:07,788 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:07,788 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:07,789 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:07,789 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:07,789 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:07,789 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:07,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:29:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 04:29:07,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:07,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:07,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:07,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 04:29:07,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:07,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391575387] [2020-09-25 04:29:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 04:29:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:29:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:29:13,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:13,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:29:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:29:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:29:13,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:13,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:13,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:29:13,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:13,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:29:13,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:13,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391575387] [2020-09-25 04:29:13,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:13,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:29:13,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213304008] [2020-09-25 04:29:13,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:29:13,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:13,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:29:13,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:29:13,562 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:29:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:16,000 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:29:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:16,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 04:29:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:16,047 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:29:16,047 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:29:16,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:29:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:29:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:29:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:29:16,248 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 117 [2020-09-25 04:29:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:16,249 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:29:16,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:29:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 04:29:16,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:16,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:29:16,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:16,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -890048490, now seen corresponding path program 1 times [2020-09-25 04:29:16,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:16,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629927221] [2020-09-25 04:29:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 04:29:21,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:29:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:29:21,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:29:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:29:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:21,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:29:21,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:21,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:29:21,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:21,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:29:21,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:21,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629927221] [2020-09-25 04:29:21,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:21,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:21,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563465934] [2020-09-25 04:29:21,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:21,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:21,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:21,677 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:29:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:23,263 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 04:29:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:23,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 04:29:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:23,272 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 04:29:23,272 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 04:29:23,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 04:29:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 04:29:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 04:29:23,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 04:29:23,313 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 135 [2020-09-25 04:29:23,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:23,314 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 04:29:23,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 04:29:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 04:29:23,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:23,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:23,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:23,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash -334312447, now seen corresponding path program 1 times [2020-09-25 04:29:23,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:23,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500367480] [2020-09-25 04:29:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:23,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:28,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 04:29:28,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:28,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 04:29:28,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:28,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 04:29:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:29:28,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:28,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:28,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:28,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:28,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:29:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:29:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:28,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:29:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:28,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500367480] [2020-09-25 04:29:28,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:28,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:28,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810050514] [2020-09-25 04:29:28,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:28,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:28,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:28,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:28,654 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 5 states. [2020-09-25 04:29:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:30,897 INFO L93 Difference]: Finished difference Result 2568 states and 3389 transitions. [2020-09-25 04:29:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:30,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 04:29:30,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:30,912 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 04:29:30,912 INFO L226 Difference]: Without dead ends: 1623 [2020-09-25 04:29:30,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-09-25 04:29:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1575. [2020-09-25 04:29:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-09-25 04:29:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1954 transitions. [2020-09-25 04:29:30,981 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1954 transitions. Word has length 161 [2020-09-25 04:29:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:30,982 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 1954 transitions. [2020-09-25 04:29:30,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1954 transitions. [2020-09-25 04:29:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 04:29:30,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:31,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:31,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:31,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:31,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:31,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2022775050, now seen corresponding path program 1 times [2020-09-25 04:29:31,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:31,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928060202] [2020-09-25 04:29:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:36,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:36,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:29:36,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:29:36,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:29:36,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:36,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 04:29:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:29:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:36,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:36,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:36,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:36,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:29:36,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:36,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:36,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:36,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:36,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:29:36,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:36,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:36,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:29:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:36,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:36,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 04:29:36,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:36,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:29:36,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:29:36,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928060202] [2020-09-25 04:29:36,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:36,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:36,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102347256] [2020-09-25 04:29:36,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:36,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:36,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:36,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:36,358 INFO L87 Difference]: Start difference. First operand 1575 states and 1954 transitions. Second operand 5 states. [2020-09-25 04:29:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:38,504 INFO L93 Difference]: Finished difference Result 3838 states and 4855 transitions. [2020-09-25 04:29:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:38,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-25 04:29:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:38,518 INFO L225 Difference]: With dead ends: 3838 [2020-09-25 04:29:38,518 INFO L226 Difference]: Without dead ends: 2285 [2020-09-25 04:29:38,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-25 04:29:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2179. [2020-09-25 04:29:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2179 states. [2020-09-25 04:29:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2749 transitions. [2020-09-25 04:29:38,626 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2749 transitions. Word has length 174 [2020-09-25 04:29:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:38,627 INFO L479 AbstractCegarLoop]: Abstraction has 2179 states and 2749 transitions. [2020-09-25 04:29:38,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2749 transitions. [2020-09-25 04:29:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:29:38,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:38,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:38,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:38,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1188825606, now seen corresponding path program 1 times [2020-09-25 04:29:38,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:38,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946831842] [2020-09-25 04:29:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:43,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 04:29:43,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:29:43,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:43,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:29:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:29:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:43,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:43,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:43,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:29:43,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:29:43,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:43,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:29:43,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:29:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:43,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:29:43,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 04:29:43,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:43,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:29:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:44,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946831842] [2020-09-25 04:29:44,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:44,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:29:44,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780021626] [2020-09-25 04:29:44,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:44,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:44,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:44,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:44,062 INFO L87 Difference]: Start difference. First operand 2179 states and 2749 transitions. Second operand 8 states. [2020-09-25 04:29:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:47,721 INFO L93 Difference]: Finished difference Result 7233 states and 9840 transitions. [2020-09-25 04:29:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:29:47,721 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-25 04:29:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:47,753 INFO L225 Difference]: With dead ends: 7233 [2020-09-25 04:29:47,753 INFO L226 Difference]: Without dead ends: 5076 [2020-09-25 04:29:47,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:29:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2020-09-25 04:29:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 4414. [2020-09-25 04:29:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4414 states. [2020-09-25 04:29:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 5734 transitions. [2020-09-25 04:29:47,909 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 5734 transitions. Word has length 181 [2020-09-25 04:29:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:47,909 INFO L479 AbstractCegarLoop]: Abstraction has 4414 states and 5734 transitions. [2020-09-25 04:29:47,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:29:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 5734 transitions. [2020-09-25 04:29:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:29:47,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:47,931 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:47,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:47,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:47,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash -581823592, now seen corresponding path program 1 times [2020-09-25 04:29:47,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:47,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677952943] [2020-09-25 04:29:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:47,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking...