/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:36:24,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:36:24,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:36:24,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:36:24,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:36:24,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:36:24,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:36:24,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:36:24,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:36:24,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:36:24,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:36:24,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:36:24,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:36:24,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:36:24,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:36:24,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:36:24,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:36:24,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:36:24,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:36:24,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:36:24,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:36:24,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:36:24,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:36:24,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:36:24,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:36:24,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:36:24,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:36:24,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:36:24,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:36:24,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:36:24,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:36:24,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:36:24,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:36:24,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:36:24,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:36:24,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:36:24,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:36:24,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:36:24,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:36:24,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:36:24,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:36:24,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:36:24,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:36:24,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:36:24,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:36:24,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:36:24,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:36:24,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:36:24,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:36:24,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:36:24,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:36:24,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:36:24,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:36:24,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:36:24,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:36:24,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:36:24,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:36:24,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:36:24,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:36:24,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:36:24,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:36:24,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:36:24,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:36:24,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:36:24,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:36:24,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:36:24,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:36:24,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:36:24,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:36:24,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:36:24,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:36:24,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:36:24,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:36:24,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:36:24,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:36:24,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:36:24,886 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:36:24,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2020-10-14 04:36:24,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d144b00/c2b7a901b6234d699f2ce96702ba80d6/FLAG7b5b1d6e2 [2020-10-14 04:36:25,892 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:36:25,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2020-10-14 04:36:25,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d144b00/c2b7a901b6234d699f2ce96702ba80d6/FLAG7b5b1d6e2 [2020-10-14 04:36:26,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d144b00/c2b7a901b6234d699f2ce96702ba80d6 [2020-10-14 04:36:26,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:36:26,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:36:26,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:36:26,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:36:26,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:36:26,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:36:26" (1/1) ... [2020-10-14 04:36:26,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:26, skipping insertion in model container [2020-10-14 04:36:26,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:36:26" (1/1) ... [2020-10-14 04:36:26,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:36:26,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:36:28,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:36:28,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:36:30,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:36:30,519 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:36:30,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30 WrapperNode [2020-10-14 04:36:30,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:36:30,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:36:30,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:36:30,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:36:30,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (1/1) ... [2020-10-14 04:36:30,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (1/1) ... [2020-10-14 04:36:30,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (1/1) ... [2020-10-14 04:36:30,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (1/1) ... [2020-10-14 04:36:30,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (1/1) ... [2020-10-14 04:36:30,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (1/1) ... [2020-10-14 04:36:31,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (1/1) ... [2020-10-14 04:36:31,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:36:31,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:36:31,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:36:31,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:36:31,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (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 04:36:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:36:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:36:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:36:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:36:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:36:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:36:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:36:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:36:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:36:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:36:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:36:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:36:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:36:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:36:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:36:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:36:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:36:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:36:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:36:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:36:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:36:43,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:36:43,113 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:36:43,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:36:43 BoogieIcfgContainer [2020-10-14 04:36:43,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:36:43,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:36:43,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:36:43,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:36:43,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:36:26" (1/3) ... [2020-10-14 04:36:43,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce9b832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:36:43, skipping insertion in model container [2020-10-14 04:36:43,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:30" (2/3) ... [2020-10-14 04:36:43,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce9b832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:36:43, skipping insertion in model container [2020-10-14 04:36:43,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:36:43" (3/3) ... [2020-10-14 04:36:43,140 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label41.c [2020-10-14 04:36:43,152 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:36:43,162 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:36:43,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:36:43,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:36:43,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:36:43,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:36:43,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:36:43,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:36:43,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:36:43,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:36:43,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:36:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:36:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 04:36:43,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:36:43,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:36:43,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:36:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:36:43,280 INFO L82 PathProgramCache]: Analyzing trace with hash 685512794, now seen corresponding path program 1 times [2020-10-14 04:36:43,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:36:43,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572991528] [2020-10-14 04:36:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:36:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:36:43,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 04:36:43,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:43,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:36:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:36:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:36:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:36:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:43,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:36:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:43,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:36:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:43,896 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 04:36:43,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572991528] [2020-10-14 04:36:43,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:36:43,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:36:43,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397278652] [2020-10-14 04:36:43,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:36:43,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:43,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:36:43,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:36:43,929 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:37:08,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:37:08,191 INFO L93 Difference]: Finished difference Result 5095 states and 9566 transitions. [2020-10-14 04:37:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:37:08,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 04:37:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:37:08,248 INFO L225 Difference]: With dead ends: 5095 [2020-10-14 04:37:08,248 INFO L226 Difference]: Without dead ends: 3254 [2020-10-14 04:37:08,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:37:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2020-10-14 04:37:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3208. [2020-10-14 04:37:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-14 04:37:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5177 transitions. [2020-10-14 04:37:08,491 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5177 transitions. Word has length 12 [2020-10-14 04:37:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:37:08,492 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 5177 transitions. [2020-10-14 04:37:08,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:37:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5177 transitions. [2020-10-14 04:37:08,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 04:37:08,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:37:08,498 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:37:08,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:37:08,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:37:08,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:37:08,499 INFO L82 PathProgramCache]: Analyzing trace with hash -206282927, now seen corresponding path program 1 times [2020-10-14 04:37:08,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:37:08,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487257765] [2020-10-14 04:37:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:37:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:08,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:37:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:37:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-14 04:37:09,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:09,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:37:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:37:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:37:09,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:37:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:09,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:37:09,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:37:09,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:09,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:37:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:37:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 04:37:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:37:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:10,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:10,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:37:10,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:10,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 04:37:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:10,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:37:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:37:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:37:10,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487257765] [2020-10-14 04:37:10,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:37:10,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:37:10,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805065854] [2020-10-14 04:37:10,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:37:10,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:37:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:37:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:37:10,193 INFO L87 Difference]: Start difference. First operand 3208 states and 5177 transitions. Second operand 5 states. [2020-10-14 04:37:41,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:37:41,161 INFO L93 Difference]: Finished difference Result 7912 states and 13254 transitions. [2020-10-14 04:37:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:37:41,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-14 04:37:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:37:41,192 INFO L225 Difference]: With dead ends: 7912 [2020-10-14 04:37:41,192 INFO L226 Difference]: Without dead ends: 4710 [2020-10-14 04:37:41,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:37:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2020-10-14 04:37:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4664. [2020-10-14 04:37:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2020-10-14 04:37:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 7160 transitions. [2020-10-14 04:37:41,335 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 7160 transitions. Word has length 87 [2020-10-14 04:37:41,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:37:41,336 INFO L479 AbstractCegarLoop]: Abstraction has 4664 states and 7160 transitions. [2020-10-14 04:37:41,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:37:41,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 7160 transitions. [2020-10-14 04:37:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 04:37:41,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:37:41,343 INFO L422 BasicCegarLoop]: trace histogram [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 04:37:41,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:37:41,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:37:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:37:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2022256061, now seen corresponding path program 1 times [2020-10-14 04:37:41,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:37:41,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307905792] [2020-10-14 04:37:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:37:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:41,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:37:41,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:37:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-14 04:37:41,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:41,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:37:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:37:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:37:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:37:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:42,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:42,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:37:42,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:37:42,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:42,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:37:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:37:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:37:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:42,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:37:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 04:37:42,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:42,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:37:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:37:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:37:42,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307905792] [2020-10-14 04:37:42,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:37:42,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:37:42,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740377822] [2020-10-14 04:37:42,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:37:42,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:37:42,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:37:42,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:37:42,391 INFO L87 Difference]: Start difference. First operand 4664 states and 7160 transitions. Second operand 5 states. [2020-10-14 04:38:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:38:28,897 INFO L93 Difference]: Finished difference Result 10817 states and 17225 transitions. [2020-10-14 04:38:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:38:28,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 04:38:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:38:28,934 INFO L225 Difference]: With dead ends: 10817 [2020-10-14 04:38:28,935 INFO L226 Difference]: Without dead ends: 6159 [2020-10-14 04:38:28,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:38:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2020-10-14 04:38:29,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 6106. [2020-10-14 04:38:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2020-10-14 04:38:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 9139 transitions. [2020-10-14 04:38:29,121 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 9139 transitions. Word has length 88 [2020-10-14 04:38:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:38:29,123 INFO L479 AbstractCegarLoop]: Abstraction has 6106 states and 9139 transitions. [2020-10-14 04:38:29,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:38:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 9139 transitions. [2020-10-14 04:38:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:38:29,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:38:29,137 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:38:29,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:38:29,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:38:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:38:29,138 INFO L82 PathProgramCache]: Analyzing trace with hash -179108716, now seen corresponding path program 1 times [2020-10-14 04:38:29,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:38:29,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950563739] [2020-10-14 04:38:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:38:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:29,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:30,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:30,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:38:30,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:38:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-14 04:38:30,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:30,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:38:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:38:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:38:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:38:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:30,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:30,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:38:30,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:38:30,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:30,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:38:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:38:30,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:30,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:38:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:30,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:30,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:38:30,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:38:30,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:30,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:38:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:38:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:38:30,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950563739] [2020-10-14 04:38:30,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:38:30,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:38:30,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610280221] [2020-10-14 04:38:30,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:38:30,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:38:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:38:30,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:38:30,390 INFO L87 Difference]: Start difference. First operand 6106 states and 9139 transitions. Second operand 5 states. [2020-10-14 04:39:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:39:23,787 INFO L93 Difference]: Finished difference Result 13701 states and 21226 transitions. [2020-10-14 04:39:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:39:23,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 04:39:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:39:23,827 INFO L225 Difference]: With dead ends: 13701 [2020-10-14 04:39:23,827 INFO L226 Difference]: Without dead ends: 7601 [2020-10-14 04:39:23,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:39:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2020-10-14 04:39:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 7517. [2020-10-14 04:39:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7517 states. [2020-10-14 04:39:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7517 states to 7517 states and 11316 transitions. [2020-10-14 04:39:24,085 INFO L78 Accepts]: Start accepts. Automaton has 7517 states and 11316 transitions. Word has length 99 [2020-10-14 04:39:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:39:24,087 INFO L479 AbstractCegarLoop]: Abstraction has 7517 states and 11316 transitions. [2020-10-14 04:39:24,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:39:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7517 states and 11316 transitions. [2020-10-14 04:39:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 04:39:24,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:24,090 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:39:24,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:39:24,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash -650675793, now seen corresponding path program 1 times [2020-10-14 04:39:24,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:24,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634024614] [2020-10-14 04:39:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:25,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:25,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:39:25,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:39:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-14 04:39:25,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:25,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:39:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:39:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:39:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:25,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:25,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:25,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:39:25,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:25,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:39:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:39:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:39:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:25,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:25,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:25,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:39:25,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 04:39:25,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:25,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:39:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:39:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:39:25,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634024614] [2020-10-14 04:39:25,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:39:25,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:39:25,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71635374] [2020-10-14 04:39:25,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:39:25,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:39:25,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:39:25,777 INFO L87 Difference]: Start difference. First operand 7517 states and 11316 transitions. Second operand 5 states. [2020-10-14 04:40:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:35,298 INFO L93 Difference]: Finished difference Result 22081 states and 33829 transitions. [2020-10-14 04:40:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:35,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-14 04:40:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:35,351 INFO L225 Difference]: With dead ends: 22081 [2020-10-14 04:40:35,351 INFO L226 Difference]: Without dead ends: 14570 [2020-10-14 04:40:35,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:40:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14570 states. [2020-10-14 04:40:35,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14570 to 14538. [2020-10-14 04:40:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14538 states. [2020-10-14 04:40:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14538 states to 14538 states and 19466 transitions. [2020-10-14 04:40:35,654 INFO L78 Accepts]: Start accepts. Automaton has 14538 states and 19466 transitions. Word has length 113 [2020-10-14 04:40:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:35,655 INFO L479 AbstractCegarLoop]: Abstraction has 14538 states and 19466 transitions. [2020-10-14 04:40:35,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:40:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14538 states and 19466 transitions. [2020-10-14 04:40:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 04:40:35,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:35,658 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:40:35,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:40:35,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:35,659 INFO L82 PathProgramCache]: Analyzing trace with hash -272695945, now seen corresponding path program 1 times [2020-10-14 04:40:35,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:35,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637406267] [2020-10-14 04:40:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:35,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:35,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 04:40:35,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-14 04:40:35,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:35,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:40:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:40:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 04:40:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:36,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:36,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:40:36,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:36,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:36,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:36,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:40:36,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:36,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 04:40:36,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:36,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:40:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:40:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 04:40:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:36,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637406267] [2020-10-14 04:40:36,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:40:36,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:40:36,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635079966] [2020-10-14 04:40:36,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:40:36,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:36,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:40:36,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:40:36,491 INFO L87 Difference]: Start difference. First operand 14538 states and 19466 transitions. Second operand 7 states.