/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/Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:06:12,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:06:12,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:06:12,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:06:12,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:06:12,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:06:12,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:06:12,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:06:12,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:06:12,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:06:12,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:06:12,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:06:12,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:06:12,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:06:12,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:06:12,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:06:12,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:06:12,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:06:12,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:06:12,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:06:12,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:06:12,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:06:12,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:06:12,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:06:12,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:06:12,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:06:12,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:06:12,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:06:12,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:06:12,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:06:12,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:06:12,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:06:12,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:06:12,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:06:12,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:06:12,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:06:12,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:06:12,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:06:12,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:06:12,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:06:12,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:06:12,419 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 21:06:12,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:06:12,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:06:12,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:06:12,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:06:12,442 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:06:12,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:06:12,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:06:12,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:06:12,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:06:12,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:06:12,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:06:12,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:06:12,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:06:12,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:06:12,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:06:12,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:06:12,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:06:12,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:06:12,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:06:12,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:06:12,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:06:12,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:06:12,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:06:12,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:06:12,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:06:12,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:06:12,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:06:12,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:06:12,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:06:12,447 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 21:06:12,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:06:12,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:06:12,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:06:12,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:06:12,756 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:06:12,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2020-10-14 21:06:12,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75b09a57/ee32dc923cb74552b6c6846c5cbc7a5b/FLAG87ee15699 [2020-10-14 21:06:13,602 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:06:13,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2020-10-14 21:06:13,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75b09a57/ee32dc923cb74552b6c6846c5cbc7a5b/FLAG87ee15699 [2020-10-14 21:06:13,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75b09a57/ee32dc923cb74552b6c6846c5cbc7a5b [2020-10-14 21:06:13,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:06:13,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:06:13,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:13,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:06:13,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:06:13,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:13" (1/1) ... [2020-10-14 21:06:13,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:13, skipping insertion in model container [2020-10-14 21:06:13,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:13" (1/1) ... [2020-10-14 21:06:13,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:06:13,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:06:15,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:15,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:06:16,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:16,202 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:06:16,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16 WrapperNode [2020-10-14 21:06:16,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:16,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:06:16,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:06:16,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:06:16,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:06:16,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:06:16,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:06:16,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:06:16,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (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 21:06:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:06:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:06:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:06:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:06:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:06:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:06:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:06:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:06:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:06:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:06:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:06:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:06:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:06:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:06:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:06:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:06:16,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:06:21,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:06:21,879 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:06:21,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:21 BoogieIcfgContainer [2020-10-14 21:06:21,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:06:21,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:06:21,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:06:21,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:06:21,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:06:13" (1/3) ... [2020-10-14 21:06:21,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a93e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:21, skipping insertion in model container [2020-10-14 21:06:21,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (2/3) ... [2020-10-14 21:06:21,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a93e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:21, skipping insertion in model container [2020-10-14 21:06:21,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:21" (3/3) ... [2020-10-14 21:06:21,898 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label02.c [2020-10-14 21:06:21,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:06:21,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:06:21,932 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:06:21,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:06:21,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:06:21,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:06:21,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:06:21,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:06:21,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:06:21,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:06:21,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:06:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:06:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 21:06:22,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:22,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:22,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:22,024 INFO L82 PathProgramCache]: Analyzing trace with hash -19130643, now seen corresponding path program 1 times [2020-10-14 21:06:22,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:22,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903412129] [2020-10-14 21:06:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:06:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-14 21:06:22,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:06:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:06:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:22,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 21:06:22,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:06:22,916 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 21:06:22,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903412129] [2020-10-14 21:06:22,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:22,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:06:22,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744132577] [2020-10-14 21:06:22,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:06:22,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:22,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:06:22,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:06:22,945 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:06:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:31,760 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:06:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:06:31,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-14 21:06:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:31,813 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:06:31,814 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:06:31,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:06:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:06:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:06:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:06:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-14 21:06:32,064 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 68 [2020-10-14 21:06:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:32,065 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-14 21:06:32,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:06:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-14 21:06:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 21:06:32,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:32,073 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:32,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:06:32,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:32,074 INFO L82 PathProgramCache]: Analyzing trace with hash 841767833, now seen corresponding path program 1 times [2020-10-14 21:06:32,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:32,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371059335] [2020-10-14 21:06:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:33,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:33,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 21:06:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1554 [2020-10-14 21:06:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:33,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 21:06:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:06:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:06:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:33,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:33,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:33,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:06:33,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:33,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:33,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:33,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:33,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:33,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:06:33,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:06:33,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:33,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 21:06:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:33,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371059335] [2020-10-14 21:06:33,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:33,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:06:33,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629417457] [2020-10-14 21:06:33,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:06:33,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:33,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:06:33,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:06:33,994 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 5 states. [2020-10-14 21:06:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:42,786 INFO L93 Difference]: Finished difference Result 4668 states and 8580 transitions. [2020-10-14 21:06:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:06:42,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-14 21:06:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:42,802 INFO L225 Difference]: With dead ends: 4668 [2020-10-14 21:06:42,803 INFO L226 Difference]: Without dead ends: 3121 [2020-10-14 21:06:42,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:06:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-14 21:06:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3106. [2020-10-14 21:06:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-14 21:06:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5300 transitions. [2020-10-14 21:06:42,890 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5300 transitions. Word has length 141 [2020-10-14 21:06:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:42,891 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 5300 transitions. [2020-10-14 21:06:42,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:06:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5300 transitions. [2020-10-14 21:06:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 21:06:42,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:42,895 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, 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] [2020-10-14 21:06:42,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:06:42,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:42,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1542176651, now seen corresponding path program 1 times [2020-10-14 21:06:42,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:42,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599319180] [2020-10-14 21:06:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:44,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:44,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 21:06:44,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:06:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-10-14 21:06:44,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:44,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:06:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 21:06:44,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:44,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:06:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:44,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:44,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:44,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:06:44,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:06:44,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:44,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:06:44,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:06:44,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599319180] [2020-10-14 21:06:44,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:44,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:06:44,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109466749] [2020-10-14 21:06:44,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:06:44,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:44,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:06:44,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:06:44,467 INFO L87 Difference]: Start difference. First operand 3106 states and 5300 transitions. Second operand 6 states. [2020-10-14 21:06:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:54,758 INFO L93 Difference]: Finished difference Result 9365 states and 16152 transitions. [2020-10-14 21:06:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:06:54,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2020-10-14 21:06:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:54,798 INFO L225 Difference]: With dead ends: 9365 [2020-10-14 21:06:54,798 INFO L226 Difference]: Without dead ends: 6265 [2020-10-14 21:06:54,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:06:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2020-10-14 21:06:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 6239. [2020-10-14 21:06:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6239 states. [2020-10-14 21:06:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 9298 transitions. [2020-10-14 21:06:55,014 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 9298 transitions. Word has length 143 [2020-10-14 21:06:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:55,015 INFO L479 AbstractCegarLoop]: Abstraction has 6239 states and 9298 transitions. [2020-10-14 21:06:55,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:06:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 9298 transitions. [2020-10-14 21:06:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 21:06:55,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:55,021 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, 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 21:06:55,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:06:55,022 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:55,022 INFO L82 PathProgramCache]: Analyzing trace with hash 216457409, now seen corresponding path program 1 times [2020-10-14 21:06:55,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:55,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823587735] [2020-10-14 21:06:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:55,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 21:06:55,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-14 21:06:55,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:55,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:06:55,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:55,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:55,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:06:55,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:55,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:55,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:06:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:06:56,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:06:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:56,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823587735] [2020-10-14 21:06:56,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:56,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:56,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086435909] [2020-10-14 21:06:56,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:56,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:56,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:56,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:56,133 INFO L87 Difference]: Start difference. First operand 6239 states and 9298 transitions. Second operand 7 states. [2020-10-14 21:07:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:07,622 INFO L93 Difference]: Finished difference Result 19010 states and 28976 transitions. [2020-10-14 21:07:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:07,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-10-14 21:07:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:07,691 INFO L225 Difference]: With dead ends: 19010 [2020-10-14 21:07:07,691 INFO L226 Difference]: Without dead ends: 12777 [2020-10-14 21:07:07,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:07:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12777 states. [2020-10-14 21:07:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12777 to 11838. [2020-10-14 21:07:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11838 states. [2020-10-14 21:07:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11838 states to 11838 states and 16898 transitions. [2020-10-14 21:07:08,119 INFO L78 Accepts]: Start accepts. Automaton has 11838 states and 16898 transitions. Word has length 153 [2020-10-14 21:07:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:08,120 INFO L479 AbstractCegarLoop]: Abstraction has 11838 states and 16898 transitions. [2020-10-14 21:07:08,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11838 states and 16898 transitions. [2020-10-14 21:07:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 21:07:08,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:08,127 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:08,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:07:08,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:08,128 INFO L82 PathProgramCache]: Analyzing trace with hash 428436648, now seen corresponding path program 1 times [2020-10-14 21:07:08,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:08,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803913644] [2020-10-14 21:07:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:09,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 21:07:09,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-14 21:07:09,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:09,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:07:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:09,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:09,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:09,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:07:09,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:09,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:09,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:07:09,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:09,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 21:07:09,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:09,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:07:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:07:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:09,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803913644] [2020-10-14 21:07:09,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:09,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:09,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34843724] [2020-10-14 21:07:09,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:09,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:09,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:09,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:09,883 INFO L87 Difference]: Start difference. First operand 11838 states and 16898 transitions. Second operand 7 states. [2020-10-14 21:07:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:22,234 INFO L93 Difference]: Finished difference Result 29536 states and 43066 transitions. [2020-10-14 21:07:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:22,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-10-14 21:07:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:22,306 INFO L225 Difference]: With dead ends: 29536 [2020-10-14 21:07:22,307 INFO L226 Difference]: Without dead ends: 17704 [2020-10-14 21:07:22,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:07:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17704 states. [2020-10-14 21:07:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17704 to 16715. [2020-10-14 21:07:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16715 states. [2020-10-14 21:07:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16715 states to 16715 states and 22810 transitions. [2020-10-14 21:07:22,889 INFO L78 Accepts]: Start accepts. Automaton has 16715 states and 22810 transitions. Word has length 168 [2020-10-14 21:07:22,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:22,889 INFO L479 AbstractCegarLoop]: Abstraction has 16715 states and 22810 transitions. [2020-10-14 21:07:22,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 16715 states and 22810 transitions. [2020-10-14 21:07:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 21:07:22,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:22,894 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:22,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:07:22,895 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:22,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:22,896 INFO L82 PathProgramCache]: Analyzing trace with hash -539413968, now seen corresponding path program 1 times [2020-10-14 21:07:22,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:22,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786873361] [2020-10-14 21:07:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:24,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 21:07:24,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:07:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1653 [2020-10-14 21:07:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:24,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:07:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:07:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:24,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:24,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:24,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:07:24,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:24,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:25,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:25,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-14 21:07:25,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:25,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:07:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:07:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:25,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:25,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:07:25,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:25,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:07:25,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:25,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:07:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:25,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786873361] [2020-10-14 21:07:25,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:25,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:25,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900132366] [2020-10-14 21:07:25,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:25,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:25,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:25,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:25,959 INFO L87 Difference]: Start difference. First operand 16715 states and 22810 transitions. Second operand 7 states. [2020-10-14 21:07:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:39,165 INFO L93 Difference]: Finished difference Result 26594 states and 37320 transitions. [2020-10-14 21:07:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:07:39,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-14 21:07:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:39,195 INFO L225 Difference]: With dead ends: 26594 [2020-10-14 21:07:39,195 INFO L226 Difference]: Without dead ends: 9103 [2020-10-14 21:07:39,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:07:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9103 states. [2020-10-14 21:07:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9103 to 8860. [2020-10-14 21:07:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8860 states. [2020-10-14 21:07:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8860 states to 8860 states and 11193 transitions. [2020-10-14 21:07:39,412 INFO L78 Accepts]: Start accepts. Automaton has 8860 states and 11193 transitions. Word has length 243 [2020-10-14 21:07:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:39,413 INFO L479 AbstractCegarLoop]: Abstraction has 8860 states and 11193 transitions. [2020-10-14 21:07:39,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8860 states and 11193 transitions. [2020-10-14 21:07:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-14 21:07:39,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:39,418 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:39,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:07:39,419 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1456142915, now seen corresponding path program 1 times [2020-10-14 21:07:39,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:39,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402361760] [2020-10-14 21:07:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:41,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:41,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 21:07:41,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-14 21:07:41,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:41,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 21:07:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:41,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:41,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:41,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:41,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:41,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:41,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:42,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:42,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:07:42,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-14 21:07:42,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:42,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:07:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:43,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402361760] [2020-10-14 21:07:43,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:43,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:43,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001518982] [2020-10-14 21:07:43,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:43,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:43,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:43,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:43,107 INFO L87 Difference]: Start difference. First operand 8860 states and 11193 transitions. Second operand 7 states. [2020-10-14 21:07:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:56,325 INFO L93 Difference]: Finished difference Result 20429 states and 25911 transitions. [2020-10-14 21:07:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:07:56,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-14 21:07:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:56,361 INFO L225 Difference]: With dead ends: 20429 [2020-10-14 21:07:56,361 INFO L226 Difference]: Without dead ends: 12342 [2020-10-14 21:07:56,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:07:56,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12342 states. [2020-10-14 21:07:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12342 to 12059. [2020-10-14 21:07:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12059 states. [2020-10-14 21:07:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12059 states to 12059 states and 14610 transitions. [2020-10-14 21:07:56,613 INFO L78 Accepts]: Start accepts. Automaton has 12059 states and 14610 transitions. Word has length 267 [2020-10-14 21:07:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:56,614 INFO L479 AbstractCegarLoop]: Abstraction has 12059 states and 14610 transitions. [2020-10-14 21:07:56,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 12059 states and 14610 transitions. [2020-10-14 21:07:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-14 21:07:56,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:56,620 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:56,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:07:56,620 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:56,621 INFO L82 PathProgramCache]: Analyzing trace with hash -800914599, now seen corresponding path program 1 times [2020-10-14 21:07:56,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:56,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572918007] [2020-10-14 21:07:56,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:57,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:57,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:57,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-14 21:07:57,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-10-14 21:07:57,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:57,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-14 21:07:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:07:57,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:58,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:58,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:58,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:58,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:58,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:07:58,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:58,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:58,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:58,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:07:58,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 21:07:58,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:58,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:07:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:58,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 21:07:58,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:58,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:07:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 21:07:58,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572918007] [2020-10-14 21:07:58,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:58,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:07:58,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749875274] [2020-10-14 21:07:58,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:07:58,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:58,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:07:58,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:07:58,337 INFO L87 Difference]: Start difference. First operand 12059 states and 14610 transitions. Second operand 5 states. [2020-10-14 21:08:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:16,213 INFO L93 Difference]: Finished difference Result 31279 states and 39485 transitions. [2020-10-14 21:08:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:08:16,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-14 21:08:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:16,253 INFO L225 Difference]: With dead ends: 31279 [2020-10-14 21:08:16,253 INFO L226 Difference]: Without dead ends: 19191 [2020-10-14 21:08:16,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:16,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19191 states. [2020-10-14 21:08:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19191 to 19149. [2020-10-14 21:08:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19149 states. [2020-10-14 21:08:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19149 states to 19149 states and 22789 transitions. [2020-10-14 21:08:16,746 INFO L78 Accepts]: Start accepts. Automaton has 19149 states and 22789 transitions. Word has length 288 [2020-10-14 21:08:16,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:16,747 INFO L479 AbstractCegarLoop]: Abstraction has 19149 states and 22789 transitions. [2020-10-14 21:08:16,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:08:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 19149 states and 22789 transitions. [2020-10-14 21:08:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-14 21:08:16,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:16,757 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:16,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:08:16,758 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:16,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:16,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1130497145, now seen corresponding path program 1 times [2020-10-14 21:08:16,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:16,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065460511] [2020-10-14 21:08:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-14 21:08:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2084 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:08:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:19,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:19,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:08:19,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:19,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:19,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 21:08:19,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:08:19,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:08:19,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:08:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 21:08:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:08:19,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:19,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:08:19,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:08:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 363 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:08:19,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065460511] [2020-10-14 21:08:19,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:19,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:19,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084320577] [2020-10-14 21:08:19,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:19,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:19,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:19,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:19,965 INFO L87 Difference]: Start difference. First operand 19149 states and 22789 transitions. Second operand 7 states. [2020-10-14 21:08:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:40,431 INFO L93 Difference]: Finished difference Result 46007 states and 57052 transitions. [2020-10-14 21:08:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:08:40,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-10-14 21:08:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:40,511 INFO L225 Difference]: With dead ends: 46007 [2020-10-14 21:08:40,511 INFO L226 Difference]: Without dead ends: 27631 [2020-10-14 21:08:40,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:08:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27631 states. [2020-10-14 21:08:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27631 to 26556. [2020-10-14 21:08:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26556 states. [2020-10-14 21:08:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26556 states to 26556 states and 32538 transitions. [2020-10-14 21:08:41,043 INFO L78 Accepts]: Start accepts. Automaton has 26556 states and 32538 transitions. Word has length 399 [2020-10-14 21:08:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:41,043 INFO L479 AbstractCegarLoop]: Abstraction has 26556 states and 32538 transitions. [2020-10-14 21:08:41,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 26556 states and 32538 transitions. [2020-10-14 21:08:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 21:08:41,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:41,056 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:41,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:08:41,057 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:41,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:41,057 INFO L82 PathProgramCache]: Analyzing trace with hash -901165007, now seen corresponding path program 1 times [2020-10-14 21:08:41,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:41,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6261592] [2020-10-14 21:08:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:43,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:43,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 21:08:43,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2383 [2020-10-14 21:08:43,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:43,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:08:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:08:43,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:43,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:43,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:08:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:43,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:43,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:44,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:08:44,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 21:08:44,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:44,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:08:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:08:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:44,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:44,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:08:44,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:08:44,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:44,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:08:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:44,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 21:08:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:44,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:08:44,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:44,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:08:44,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:44,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:08:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 363 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 21:08:45,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6261592] [2020-10-14 21:08:45,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:45,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:08:45,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645809245] [2020-10-14 21:08:45,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:08:45,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:45,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:08:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:45,021 INFO L87 Difference]: Start difference. First operand 26556 states and 32538 transitions. Second operand 8 states. [2020-10-14 21:09:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:16,811 INFO L93 Difference]: Finished difference Result 74080 states and 94976 transitions. [2020-10-14 21:09:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:09:16,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 403 [2020-10-14 21:09:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:16,992 INFO L225 Difference]: With dead ends: 74080 [2020-10-14 21:09:16,992 INFO L226 Difference]: Without dead ends: 48297 [2020-10-14 21:09:17,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:09:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48297 states. [2020-10-14 21:09:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48297 to 46547. [2020-10-14 21:09:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46547 states. [2020-10-14 21:09:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46547 states to 46547 states and 58957 transitions. [2020-10-14 21:09:18,018 INFO L78 Accepts]: Start accepts. Automaton has 46547 states and 58957 transitions. Word has length 403 [2020-10-14 21:09:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:18,019 INFO L479 AbstractCegarLoop]: Abstraction has 46547 states and 58957 transitions. [2020-10-14 21:09:18,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:09:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 46547 states and 58957 transitions. [2020-10-14 21:09:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-14 21:09:18,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:18,035 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:18,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:09:18,036 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash -385747386, now seen corresponding path program 1 times [2020-10-14 21:09:18,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:18,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453437613] [2020-10-14 21:09:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:18,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:20,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:20,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-14 21:09:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:09:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2780 [2020-10-14 21:09:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:20,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:09:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:09:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 21:09:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:21,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:21,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:21,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:21,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:09:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:21,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:21,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:21,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:21,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 21:09:21,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:21,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:21,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:21,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:21,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:09:21,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:21,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:21,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:21,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:09:21,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:21,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 21:09:21,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:21,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:09:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 21:09:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:21,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:09:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 21:09:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:21,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:09:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:09:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 306 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:09:22,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453437613] [2020-10-14 21:09:22,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:22,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:09:22,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023452089] [2020-10-14 21:09:22,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:09:22,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:22,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:09:22,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:09:22,137 INFO L87 Difference]: Start difference. First operand 46547 states and 58957 transitions. Second operand 9 states.