/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:23:12,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:23:12,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:23:12,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:23:12,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:23:12,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:23:12,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:23:12,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:23:12,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:23:12,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:23:12,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:23:12,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:23:12,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:23:12,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:23:12,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:23:12,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:23:12,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:23:12,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:23:12,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:23:12,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:23:12,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:23:12,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:23:12,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:23:12,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:23:12,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:23:12,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:23:12,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:23:12,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:23:12,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:23:12,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:23:12,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:23:12,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:23:12,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:23:12,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:23:12,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:23:12,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:23:12,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:23:12,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:23:12,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:23:12,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:23:12,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:23:12,476 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 22:23:12,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:23:12,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:23:12,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:23:12,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:23:12,519 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:23:12,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:23:12,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:23:12,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:23:12,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:23:12,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:23:12,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:23:12,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:23:12,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:23:12,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:23:12,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:23:12,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:23:12,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:23:12,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:23:12,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:23:12,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:23:12,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:23:12,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:23:12,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:23:12,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:23:12,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:23:12,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:23:12,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:23:12,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:23:12,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:23:12,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:23:12,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:23:12,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:23:12,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:23:12,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:23:12,818 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:23:12,819 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02.c [2020-10-14 22:23:12,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b2ec1eaf/5499d8b679f945148fb9a6500259dec1/FLAG44b486833 [2020-10-14 22:23:13,719 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:23:13,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label02.c [2020-10-14 22:23:13,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b2ec1eaf/5499d8b679f945148fb9a6500259dec1/FLAG44b486833 [2020-10-14 22:23:13,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b2ec1eaf/5499d8b679f945148fb9a6500259dec1 [2020-10-14 22:23:13,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:23:13,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:23:13,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:13,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:23:13,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:23:13,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:13" (1/1) ... [2020-10-14 22:23:13,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb2e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:13, skipping insertion in model container [2020-10-14 22:23:13,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:13" (1/1) ... [2020-10-14 22:23:13,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:23:13,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:23:15,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:15,171 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:23:15,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:15,745 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:23:15,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15 WrapperNode [2020-10-14 22:23:15,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:15,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:23:15,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:23:15,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:23:15,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (1/1) ... [2020-10-14 22:23:15,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (1/1) ... [2020-10-14 22:23:15,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (1/1) ... [2020-10-14 22:23:15,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (1/1) ... [2020-10-14 22:23:15,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (1/1) ... [2020-10-14 22:23:15,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (1/1) ... [2020-10-14 22:23:15,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (1/1) ... [2020-10-14 22:23:16,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:23:16,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:23:16,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:23:16,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:23:16,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (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 22:23:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:23:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:23:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:23:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:23:16,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:23:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:23:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:23:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:23:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:23:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:23:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:23:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:23:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:23:25,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:23:25,252 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:23:25,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:25 BoogieIcfgContainer [2020-10-14 22:23:25,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:23:25,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:23:25,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:23:25,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:23:25,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:23:13" (1/3) ... [2020-10-14 22:23:25,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6617012f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:25, skipping insertion in model container [2020-10-14 22:23:25,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:15" (2/3) ... [2020-10-14 22:23:25,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6617012f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:25, skipping insertion in model container [2020-10-14 22:23:25,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:25" (3/3) ... [2020-10-14 22:23:25,269 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label02.c [2020-10-14 22:23:25,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:23:25,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:23:25,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:23:25,333 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:23:25,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:23:25,334 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:23:25,334 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:23:25,334 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:23:25,334 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:23:25,334 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:23:25,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:23:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:23:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 22:23:25,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:25,377 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] [2020-10-14 22:23:25,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:25,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1212543623, now seen corresponding path program 1 times [2020-10-14 22:23:25,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:25,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893162419] [2020-10-14 22:23:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:26,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 22:23:26,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-14 22:23:26,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:26,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:23:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 22:23:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:23:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:26,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:26,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:26,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:23:26,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:26,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:26,422 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 22:23:26,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893162419] [2020-10-14 22:23:26,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:23:26,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:23:26,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587644563] [2020-10-14 22:23:26,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:23:26,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:26,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:23:26,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:23:26,460 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-14 22:23:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:23:41,034 INFO L93 Difference]: Finished difference Result 2169 states and 4016 transitions. [2020-10-14 22:23:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:23:41,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-14 22:23:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:23:41,075 INFO L225 Difference]: With dead ends: 2169 [2020-10-14 22:23:41,076 INFO L226 Difference]: Without dead ends: 1472 [2020-10-14 22:23:41,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:23:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-14 22:23:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1443. [2020-10-14 22:23:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-14 22:23:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2112 transitions. [2020-10-14 22:23:41,242 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2112 transitions. Word has length 59 [2020-10-14 22:23:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:23:41,243 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2112 transitions. [2020-10-14 22:23:41,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:23:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2112 transitions. [2020-10-14 22:23:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 22:23:41,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:41,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 22:23:41,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:23:41,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1204971473, now seen corresponding path program 1 times [2020-10-14 22:23:41,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:41,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347271373] [2020-10-14 22:23:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:41,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:42,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 22:23:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:23:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1562 [2020-10-14 22:23:42,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:42,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:23:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 22:23:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:23:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:43,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:43,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:23:43,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:43,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:23:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:23:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:23:43,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 22:23:43,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:43,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:43,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:23:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:23:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:23:43,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:23:43,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347271373] [2020-10-14 22:23:43,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:23:43,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:23:43,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407551461] [2020-10-14 22:23:43,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:23:43,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:43,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:23:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:23:43,431 INFO L87 Difference]: Start difference. First operand 1443 states and 2112 transitions. Second operand 7 states. [2020-10-14 22:23:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:23:56,378 INFO L93 Difference]: Finished difference Result 2907 states and 4255 transitions. [2020-10-14 22:23:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:23:56,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-14 22:23:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:23:56,387 INFO L225 Difference]: With dead ends: 2907 [2020-10-14 22:23:56,387 INFO L226 Difference]: Without dead ends: 1470 [2020-10-14 22:23:56,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:23:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2020-10-14 22:23:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1459. [2020-10-14 22:23:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-10-14 22:23:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2032 transitions. [2020-10-14 22:23:56,435 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2032 transitions. Word has length 130 [2020-10-14 22:23:56,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:23:56,435 INFO L479 AbstractCegarLoop]: Abstraction has 1459 states and 2032 transitions. [2020-10-14 22:23:56,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:23:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2032 transitions. [2020-10-14 22:23:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 22:23:56,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:56,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 22:23:56,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:23:56,439 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:56,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1376520127, now seen corresponding path program 1 times [2020-10-14 22:23:56,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:56,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151973403] [2020-10-14 22:23:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:56,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:57,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:57,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:23:57,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:23:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-14 22:23:57,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:57,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:23:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:23:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:57,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:57,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:57,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:57,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:23:57,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:57,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:57,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:23:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:57,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:57,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:23:57,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 22:23:57,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:57,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:23:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:23:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:23:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:23:57,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151973403] [2020-10-14 22:23:57,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:23:57,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:23:57,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374308126] [2020-10-14 22:23:57,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:23:57,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:57,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:23:57,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:23:57,980 INFO L87 Difference]: Start difference. First operand 1459 states and 2032 transitions. Second operand 8 states. [2020-10-14 22:24:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:17,720 INFO L93 Difference]: Finished difference Result 3472 states and 5183 transitions. [2020-10-14 22:24:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:24:17,721 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-14 22:24:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:17,734 INFO L225 Difference]: With dead ends: 3472 [2020-10-14 22:24:17,734 INFO L226 Difference]: Without dead ends: 2409 [2020-10-14 22:24:17,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 22:24:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-10-14 22:24:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2377. [2020-10-14 22:24:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2377 states. [2020-10-14 22:24:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3332 transitions. [2020-10-14 22:24:17,812 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3332 transitions. Word has length 133 [2020-10-14 22:24:17,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:17,816 INFO L479 AbstractCegarLoop]: Abstraction has 2377 states and 3332 transitions. [2020-10-14 22:24:17,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:24:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3332 transitions. [2020-10-14 22:24:17,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 22:24:17,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:17,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:17,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:24:17,828 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:17,828 INFO L82 PathProgramCache]: Analyzing trace with hash -449203243, now seen corresponding path program 1 times [2020-10-14 22:24:17,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:17,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016926238] [2020-10-14 22:24:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:18,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 22:24:18,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-14 22:24:18,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:18,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:24:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:24:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:24:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:18,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:18,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:18,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:18,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:24:18,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:18,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:18,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:24:18,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:18,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:24:18,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:24:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:24:19,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:19,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:24:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:24:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:19,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:19,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:19,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:24:19,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 22:24:19,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:19,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:24:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:24:19,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016926238] [2020-10-14 22:24:19,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:19,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:24:19,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875361] [2020-10-14 22:24:19,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:24:19,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:19,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:24:19,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:24:19,500 INFO L87 Difference]: Start difference. First operand 2377 states and 3332 transitions. Second operand 7 states. [2020-10-14 22:24:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:33,218 INFO L93 Difference]: Finished difference Result 6257 states and 9585 transitions. [2020-10-14 22:24:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:24:33,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-14 22:24:33,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:33,250 INFO L225 Difference]: With dead ends: 6257 [2020-10-14 22:24:33,251 INFO L226 Difference]: Without dead ends: 4319 [2020-10-14 22:24:33,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:24:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2020-10-14 22:24:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 4227. [2020-10-14 22:24:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-10-14 22:24:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 5818 transitions. [2020-10-14 22:24:33,403 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 5818 transitions. Word has length 215 [2020-10-14 22:24:33,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:33,405 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 5818 transitions. [2020-10-14 22:24:33,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:24:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 5818 transitions. [2020-10-14 22:24:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 22:24:33,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:33,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:24:33,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:24:33,410 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:33,411 INFO L82 PathProgramCache]: Analyzing trace with hash -154344031, now seen corresponding path program 1 times [2020-10-14 22:24:33,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:33,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914138832] [2020-10-14 22:24:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:33,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:37,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:37,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 22:24:37,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:24:37,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3926 [2020-10-14 22:24:37,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:37,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:24:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:24:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:37,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:37,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:37,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:24:37,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:37,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:24:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:37,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:37,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:24:37,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 22:24:37,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:37,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:24:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:24:37,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:37,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:24:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:38,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:38,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:24:38,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:38,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 22:24:38,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:38,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:38,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:38,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:38,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:24:38,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 173 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:24:38,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914138832] [2020-10-14 22:24:38,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:38,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:24:38,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155141618] [2020-10-14 22:24:38,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:24:38,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:38,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:24:38,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:24:38,175 INFO L87 Difference]: Start difference. First operand 4227 states and 5818 transitions. Second operand 10 states. [2020-10-14 22:24:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:59,028 INFO L93 Difference]: Finished difference Result 11008 states and 16866 transitions. [2020-10-14 22:24:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:24:59,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 221 [2020-10-14 22:24:59,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:59,081 INFO L225 Difference]: With dead ends: 11008 [2020-10-14 22:24:59,081 INFO L226 Difference]: Without dead ends: 7220 [2020-10-14 22:24:59,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-14 22:24:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2020-10-14 22:24:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 7041. [2020-10-14 22:24:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7041 states. [2020-10-14 22:24:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 9251 transitions. [2020-10-14 22:24:59,325 INFO L78 Accepts]: Start accepts. Automaton has 7041 states and 9251 transitions. Word has length 221 [2020-10-14 22:24:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:59,327 INFO L479 AbstractCegarLoop]: Abstraction has 7041 states and 9251 transitions. [2020-10-14 22:24:59,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:24:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7041 states and 9251 transitions. [2020-10-14 22:24:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 22:24:59,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:59,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:24:59,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:24:59,333 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash -693528298, now seen corresponding path program 1 times [2020-10-14 22:24:59,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:59,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704338882] [2020-10-14 22:24:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:04,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:25:04,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 22:25:04,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:04,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:25:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:25:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 22:25:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:04,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:04,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:04,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:25:04,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:04,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:04,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:04,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:04,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:25:04,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:04,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:25:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:04,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:05,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:25:05,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:05,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 22:25:05,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:05,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:25:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:25:05,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704338882] [2020-10-14 22:25:05,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:05,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:25:05,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493091489] [2020-10-14 22:25:05,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:25:05,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:05,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:25:05,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:25:05,225 INFO L87 Difference]: Start difference. First operand 7041 states and 9251 transitions. Second operand 6 states. [2020-10-14 22:25:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:23,379 INFO L93 Difference]: Finished difference Result 15872 states and 21668 transitions. [2020-10-14 22:25:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:25:23,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2020-10-14 22:25:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:23,436 INFO L225 Difference]: With dead ends: 15872 [2020-10-14 22:25:23,437 INFO L226 Difference]: Without dead ends: 9287 [2020-10-14 22:25:23,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:25:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9287 states. [2020-10-14 22:25:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9287 to 8827. [2020-10-14 22:25:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8827 states. [2020-10-14 22:25:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 12208 transitions. [2020-10-14 22:25:23,713 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 12208 transitions. Word has length 232 [2020-10-14 22:25:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:23,714 INFO L479 AbstractCegarLoop]: Abstraction has 8827 states and 12208 transitions. [2020-10-14 22:25:23,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:25:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 12208 transitions. [2020-10-14 22:25:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 22:25:23,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:23,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:25:23,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:25:23,721 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1828216974, now seen corresponding path program 1 times [2020-10-14 22:25:23,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:23,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22815294] [2020-10-14 22:25:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:26,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:26,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 22:25:26,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-10-14 22:25:26,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:26,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:25:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:26,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:25:26,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:26,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:26,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:26,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:26,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:25:26,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:26,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:26,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:25:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:26,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:26,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:26,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:25:26,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:26,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 22:25:26,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:26,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:25:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 22:25:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:26,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:26,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:25:26,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 22:25:26,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:26,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 22:25:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 104 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:25:27,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22815294] [2020-10-14 22:25:27,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:27,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:25:27,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736683948] [2020-10-14 22:25:27,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:25:27,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:27,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:25:27,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:25:27,019 INFO L87 Difference]: Start difference. First operand 8827 states and 12208 transitions. Second operand 7 states. [2020-10-14 22:25:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:48,944 INFO L93 Difference]: Finished difference Result 17624 states and 25980 transitions. [2020-10-14 22:25:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:25:48,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 22:25:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:49,003 INFO L225 Difference]: With dead ends: 17624 [2020-10-14 22:25:49,003 INFO L226 Difference]: Without dead ends: 9240 [2020-10-14 22:25:49,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:25:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2020-10-14 22:25:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 8962. [2020-10-14 22:25:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8962 states. [2020-10-14 22:25:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 12461 transitions. [2020-10-14 22:25:49,331 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 12461 transitions. Word has length 244 [2020-10-14 22:25:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:49,332 INFO L479 AbstractCegarLoop]: Abstraction has 8962 states and 12461 transitions. [2020-10-14 22:25:49,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:25:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 12461 transitions. [2020-10-14 22:25:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 22:25:49,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:49,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:25:49,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:25:49,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:49,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1119343617, now seen corresponding path program 1 times [2020-10-14 22:25:49,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:49,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314492998] [2020-10-14 22:25:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:53,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 22:25:53,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:25:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4554 [2020-10-14 22:25:53,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:53,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 22:25:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 283 [2020-10-14 22:25:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:54,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:25:54,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:25:54,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:54,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 22:25:54,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:25:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 22:25:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:55,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:55,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 22:25:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:25:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 22:25:55,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314492998] [2020-10-14 22:25:55,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:55,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:25:55,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114900511] [2020-10-14 22:25:55,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:25:55,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:55,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:25:55,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:25:55,415 INFO L87 Difference]: Start difference. First operand 8962 states and 12461 transitions. Second operand 8 states. [2020-10-14 22:26:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:27,437 INFO L93 Difference]: Finished difference Result 22849 states and 33360 transitions. [2020-10-14 22:26:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 22:26:27,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-10-14 22:26:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:27,487 INFO L225 Difference]: With dead ends: 22849 [2020-10-14 22:26:27,487 INFO L226 Difference]: Without dead ends: 13865 [2020-10-14 22:26:27,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-14 22:26:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13865 states. [2020-10-14 22:26:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13865 to 12048. [2020-10-14 22:26:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12048 states. [2020-10-14 22:26:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12048 states to 12048 states and 15369 transitions. [2020-10-14 22:26:27,840 INFO L78 Accepts]: Start accepts. Automaton has 12048 states and 15369 transitions. Word has length 277 [2020-10-14 22:26:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:27,841 INFO L479 AbstractCegarLoop]: Abstraction has 12048 states and 15369 transitions. [2020-10-14 22:26:27,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:26:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12048 states and 15369 transitions. [2020-10-14 22:26:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-14 22:26:27,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:27,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:27,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:26:27,850 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:27,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1972918520, now seen corresponding path program 1 times [2020-10-14 22:26:27,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:27,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993002244] [2020-10-14 22:26:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-14 22:26:30,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2152 [2020-10-14 22:26:30,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:26:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:26:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:26:30,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:30,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:26:30,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:26:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:30,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:26:30,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 22:26:30,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:26:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:30,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:26:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:30,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:26:30,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:26:30,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 22:26:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 244 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:26:31,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993002244] [2020-10-14 22:26:31,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:31,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:31,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278980504] [2020-10-14 22:26:31,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:31,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:31,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:31,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:31,010 INFO L87 Difference]: Start difference. First operand 12048 states and 15369 transitions. Second operand 7 states. [2020-10-14 22:26:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:53,318 INFO L93 Difference]: Finished difference Result 26567 states and 34763 transitions. [2020-10-14 22:26:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:26:53,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-14 22:26:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:53,387 INFO L225 Difference]: With dead ends: 26567 [2020-10-14 22:26:53,387 INFO L226 Difference]: Without dead ends: 14960 [2020-10-14 22:26:53,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:26:53,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14960 states. [2020-10-14 22:26:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14960 to 14848. [2020-10-14 22:26:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14848 states. [2020-10-14 22:26:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14848 states to 14848 states and 18891 transitions. [2020-10-14 22:26:53,800 INFO L78 Accepts]: Start accepts. Automaton has 14848 states and 18891 transitions. Word has length 331 [2020-10-14 22:26:53,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:53,801 INFO L479 AbstractCegarLoop]: Abstraction has 14848 states and 18891 transitions. [2020-10-14 22:26:53,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:26:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 14848 states and 18891 transitions. [2020-10-14 22:26:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 22:26:53,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:53,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 22:26:53,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:26:53,810 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:53,811 INFO L82 PathProgramCache]: Analyzing trace with hash -729651623, now seen corresponding path program 1 times [2020-10-14 22:26:53,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:53,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929360610] [2020-10-14 22:26:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 22:26:54,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-14 22:26:54,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:26:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:26:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:54,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:54,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:26:54,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:54,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:54,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 22:26:54,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:54,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:55,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:55,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:26:55,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:26:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:55,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:26:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:55,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:26:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:55,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:55,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 22:26:55,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 22:26:55,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:55,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 22:26:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:26:55,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929360610] [2020-10-14 22:26:55,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:55,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:55,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790438970] [2020-10-14 22:26:55,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:55,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:55,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:55,633 INFO L87 Difference]: Start difference. First operand 14848 states and 18891 transitions. Second operand 7 states. [2020-10-14 22:27:06,180 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 41