/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/Problem05_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:35:51,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:35:51,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:35:51,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:35:51,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:35:51,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:35:51,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:35:51,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:35:51,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:35:51,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:35:51,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:35:51,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:35:51,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:35:51,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:35:51,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:35:51,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:35:51,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:35:51,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:35:51,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:35:51,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:35:51,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:35:51,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:35:51,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:35:51,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:35:51,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:35:51,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:35:51,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:35:51,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:35:51,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:35:51,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:35:51,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:35:51,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:35:51,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:35:51,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:35:51,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:35:51,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:35:51,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:35:51,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:35:51,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:35:51,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:35:51,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:35:51,720 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 19:35:51,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:35:51,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:35:51,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:35:51,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:35:51,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:35:51,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:35:51,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:35:51,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:35:51,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:35:51,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:35:51,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:35:51,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:35:51,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:35:51,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:35:51,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:35:51,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:35:51,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:35:51,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:35:51,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:35:51,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:35:51,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:35:51,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:35:51,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:35:51,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:35:51,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:35:51,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:35:51,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:35:51,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:35:51,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:35:51,764 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 19:35:52,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:35:52,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:35:52,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:35:52,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:35:52,080 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:35:52,081 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label09.c [2020-10-14 19:35:52,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf5847b11/78adaafa68c74fe3910e488ba24d5f01/FLAG0ca524baf [2020-10-14 19:35:53,063 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:35:53,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label09.c [2020-10-14 19:35:53,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf5847b11/78adaafa68c74fe3910e488ba24d5f01/FLAG0ca524baf [2020-10-14 19:35:53,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf5847b11/78adaafa68c74fe3910e488ba24d5f01 [2020-10-14 19:35:53,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:35:53,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:35:53,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:35:53,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:35:53,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:35:53,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:35:53" (1/1) ... [2020-10-14 19:35:53,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:53, skipping insertion in model container [2020-10-14 19:35:53,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:35:53" (1/1) ... [2020-10-14 19:35:53,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:35:53,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:35:55,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:35:55,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:35:56,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:35:57,028 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:35:57,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57 WrapperNode [2020-10-14 19:35:57,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:35:57,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:35:57,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:35:57,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:35:57,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (1/1) ... [2020-10-14 19:35:57,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (1/1) ... [2020-10-14 19:35:57,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (1/1) ... [2020-10-14 19:35:57,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (1/1) ... [2020-10-14 19:35:57,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (1/1) ... [2020-10-14 19:35:57,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (1/1) ... [2020-10-14 19:35:57,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (1/1) ... [2020-10-14 19:35:57,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:35:57,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:35:57,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:35:57,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:35:57,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (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 19:35:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:35:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:35:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:35:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:35:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:35:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:35:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:35:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 19:35:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 19:35:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 19:35:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:35:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:35:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:35:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:35:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:35:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:35:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 19:35:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 19:35:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 19:35:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:35:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:35:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:35:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:35:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:35:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:36:05,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:36:05,562 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:36:05,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:36:05 BoogieIcfgContainer [2020-10-14 19:36:05,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:36:05,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:36:05,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:36:05,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:36:05,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:35:53" (1/3) ... [2020-10-14 19:36:05,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f354de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:36:05, skipping insertion in model container [2020-10-14 19:36:05,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:35:57" (2/3) ... [2020-10-14 19:36:05,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f354de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:36:05, skipping insertion in model container [2020-10-14 19:36:05,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:36:05" (3/3) ... [2020-10-14 19:36:05,588 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label09.c [2020-10-14 19:36:05,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:36:05,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:36:05,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:36:05,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:36:05,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:36:05,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:36:05,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:36:05,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:36:05,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:36:05,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:36:05,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:36:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 19:36:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-10-14 19:36:05,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:36:05,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:05,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:36:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:36:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash 692155993, now seen corresponding path program 1 times [2020-10-14 19:36:05,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:36:05,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516466285] [2020-10-14 19:36:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:36:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:12,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:12,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1714 [2020-10-14 19:36:12,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-14 19:36:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:12,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:36:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:36:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1708 [2020-10-14 19:36:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 19:36:14,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:36:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:14,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:14,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:36:14,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:36:14,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:14,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:36:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:36:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:36:16,668 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 19:36:16,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516466285] [2020-10-14 19:36:16,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:36:16,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:36:16,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325353433] [2020-10-14 19:36:16,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:36:16,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:36:16,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:36:16,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:36:16,697 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 19:36:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:36:33,489 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-14 19:36:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:36:33,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1692 [2020-10-14 19:36:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:36:33,549 INFO L225 Difference]: With dead ends: 6311 [2020-10-14 19:36:33,550 INFO L226 Difference]: Without dead ends: 4025 [2020-10-14 19:36:33,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:36:33,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-14 19:36:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-14 19:36:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-14 19:36:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-14 19:36:33,772 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1692 [2020-10-14 19:36:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:36:33,776 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-14 19:36:33,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:36:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-14 19:36:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2020-10-14 19:36:33,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:36:33,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:33,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:36:33,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:36:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:36:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash -737624690, now seen corresponding path program 1 times [2020-10-14 19:36:33,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:36:33,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746991050] [2020-10-14 19:36:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:36:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:34,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:39,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1725 [2020-10-14 19:36:39,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:36:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5248 [2020-10-14 19:36:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:39,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:36:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:36:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-14 19:36:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:36:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:36:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:40,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:36:40,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:36:40,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:40,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:40,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:36:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:36:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:40,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:40,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:36:40,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:36:40,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:40,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:36:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:36:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:36:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:36:42,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746991050] [2020-10-14 19:36:42,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:36:42,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:36:42,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902548185] [2020-10-14 19:36:42,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:36:42,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:36:42,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:36:42,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:36:42,633 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 5 states. [2020-10-14 19:37:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:37:02,122 INFO L93 Difference]: Finished difference Result 11638 states and 18922 transitions. [2020-10-14 19:37:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:37:02,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1701 [2020-10-14 19:37:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:37:02,164 INFO L225 Difference]: With dead ends: 11638 [2020-10-14 19:37:02,165 INFO L226 Difference]: Without dead ends: 7648 [2020-10-14 19:37:02,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 19:37:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7648 states. [2020-10-14 19:37:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7648 to 7570. [2020-10-14 19:37:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7570 states. [2020-10-14 19:37:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 10961 transitions. [2020-10-14 19:37:02,403 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 10961 transitions. Word has length 1701 [2020-10-14 19:37:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:37:02,406 INFO L479 AbstractCegarLoop]: Abstraction has 7570 states and 10961 transitions. [2020-10-14 19:37:02,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:37:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 10961 transitions. [2020-10-14 19:37:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-14 19:37:02,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:37:02,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:02,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:37:02,460 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:37:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:37:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash -144763030, now seen corresponding path program 1 times [2020-10-14 19:37:02,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:37:02,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799750663] [2020-10-14 19:37:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:37:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:07,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:07,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-14 19:37:07,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:37:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-14 19:37:07,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:07,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:37:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:37:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-14 19:37:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:37:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:37:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:10,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:10,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:37:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:37:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:37:10,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:10,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:37:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:37:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:37:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:37:10,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:37:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:10,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:37:10,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:37:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:37:10,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:10,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:37:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:37:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:37:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:37:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:37:12,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799750663] [2020-10-14 19:37:12,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:37:12,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:37:12,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617830097] [2020-10-14 19:37:12,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:37:12,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:37:12,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:37:12,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:37:12,545 INFO L87 Difference]: Start difference. First operand 7570 states and 10961 transitions. Second operand 5 states. [2020-10-14 19:37:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:37:32,716 INFO L93 Difference]: Finished difference Result 22196 states and 32575 transitions. [2020-10-14 19:37:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:37:32,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1703 [2020-10-14 19:37:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:37:32,792 INFO L225 Difference]: With dead ends: 22196 [2020-10-14 19:37:32,793 INFO L226 Difference]: Without dead ends: 14632 [2020-10-14 19:37:32,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 19:37:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14632 states. [2020-10-14 19:37:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 14599. [2020-10-14 19:37:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14599 states. [2020-10-14 19:37:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14599 states to 14599 states and 18999 transitions. [2020-10-14 19:37:33,156 INFO L78 Accepts]: Start accepts. Automaton has 14599 states and 18999 transitions. Word has length 1703 [2020-10-14 19:37:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:37:33,159 INFO L479 AbstractCegarLoop]: Abstraction has 14599 states and 18999 transitions. [2020-10-14 19:37:33,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:37:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14599 states and 18999 transitions. [2020-10-14 19:37:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-14 19:37:33,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:37:33,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:33,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:37:33,228 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:37:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:37:33,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1056696156, now seen corresponding path program 1 times [2020-10-14 19:37:33,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:37:33,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127560002] [2020-10-14 19:37:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:37:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:35,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-14 19:37:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:37:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5168 [2020-10-14 19:37:38,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:38,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:37:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:37:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1706 [2020-10-14 19:37:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:37:39,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:37:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:39,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:39,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:39,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:37:39,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:37:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:37:39,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:39,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:37:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:37:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:37:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:37:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:37:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:39,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:37:39,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:37:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:37:39,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:39,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:37:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:37:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:37:39,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:37:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:37:40,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127560002] [2020-10-14 19:37:40,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:37:40,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:37:40,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831412503] [2020-10-14 19:37:40,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:37:40,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:37:40,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:37:40,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:37:40,902 INFO L87 Difference]: Start difference. First operand 14599 states and 18999 transitions. Second operand 5 states. [2020-10-14 19:38:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:38:00,158 INFO L93 Difference]: Finished difference Result 36246 states and 48903 transitions. [2020-10-14 19:38:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:38:00,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707 [2020-10-14 19:38:00,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:38:00,226 INFO L225 Difference]: With dead ends: 36246 [2020-10-14 19:38:00,226 INFO L226 Difference]: Without dead ends: 21653 [2020-10-14 19:38:00,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 19:38:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21653 states. [2020-10-14 19:38:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21653 to 21632. [2020-10-14 19:38:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21632 states. [2020-10-14 19:38:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21632 states to 21632 states and 27231 transitions. [2020-10-14 19:38:00,693 INFO L78 Accepts]: Start accepts. Automaton has 21632 states and 27231 transitions. Word has length 1707 [2020-10-14 19:38:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:38:00,696 INFO L479 AbstractCegarLoop]: Abstraction has 21632 states and 27231 transitions. [2020-10-14 19:38:00,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:38:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 21632 states and 27231 transitions. [2020-10-14 19:38:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-14 19:38:00,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:38:00,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:00,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:38:00,780 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:38:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:38:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash 441836474, now seen corresponding path program 1 times [2020-10-14 19:38:00,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:38:00,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533546824] [2020-10-14 19:38:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:38:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:38:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:02,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:06,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:38:06,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-14 19:38:06,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:38:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-14 19:38:06,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:38:06,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:38:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:38:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:38:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-14 19:38:06,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:38:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:38:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:38:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:07,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:38:07,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:38:07,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:38:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:38:07,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:38:07,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:38:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:38:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:38:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:38:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:38:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:38:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:38:07,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:07,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:38:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 19:38:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:38:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:38:07,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:38:07,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:38:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:38:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:38:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:38:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:38:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:38:09,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533546824] [2020-10-14 19:38:09,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:38:09,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:38:09,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258810829] [2020-10-14 19:38:09,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:38:09,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:38:09,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:38:09,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:38:09,390 INFO L87 Difference]: Start difference. First operand 21632 states and 27231 transitions. Second operand 6 states. [2020-10-14 19:38:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:38:40,747 INFO L93 Difference]: Finished difference Result 85432 states and 110936 transitions. [2020-10-14 19:38:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:38:40,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1714 [2020-10-14 19:38:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:38:40,985 INFO L225 Difference]: With dead ends: 85432 [2020-10-14 19:38:40,985 INFO L226 Difference]: Without dead ends: 63806 [2020-10-14 19:38:41,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 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 19:38:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63806 states. [2020-10-14 19:38:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63806 to 63737. [2020-10-14 19:38:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63737 states. [2020-10-14 19:38:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63737 states to 63737 states and 77642 transitions. [2020-10-14 19:38:42,284 INFO L78 Accepts]: Start accepts. Automaton has 63737 states and 77642 transitions. Word has length 1714 [2020-10-14 19:38:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:38:42,286 INFO L479 AbstractCegarLoop]: Abstraction has 63737 states and 77642 transitions. [2020-10-14 19:38:42,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:38:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 63737 states and 77642 transitions. [2020-10-14 19:38:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2020-10-14 19:38:42,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:38:42,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:42,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:38:42,428 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:38:42,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:38:42,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1712090699, now seen corresponding path program 1 times [2020-10-14 19:38:42,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:38:42,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790096330] [2020-10-14 19:38:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:38:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:38:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:47,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:38:47,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1754 [2020-10-14 19:38:47,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:38:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-14 19:38:47,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:38:47,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:38:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 19:38:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:38:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1316 [2020-10-14 19:38:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:38:50,747 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-14 19:38:50,905 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-14 19:38:51,052 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-10-14 19:38:51,241 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2020-10-14 19:38:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:38:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:38:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:52,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:38:52,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:38:52,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:38:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:38:52,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:38:52,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:38:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:38:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:38:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:38:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:38:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:38:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:38:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:38:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:38:52,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:38:52,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:38:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 19:38:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:38:52,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:38:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:38:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:38:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:38:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:39:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:39:08,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790096330] [2020-10-14 19:39:08,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:39:08,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 19:39:08,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280909110] [2020-10-14 19:39:08,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 19:39:08,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:39:08,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 19:39:08,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-10-14 19:39:08,225 INFO L87 Difference]: Start difference. First operand 63737 states and 77642 transitions. Second operand 26 states. [2020-10-14 19:39:14,437 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-14 19:39:16,498 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-14 19:39:17,434 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-14 19:39:19,995 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71