/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/Problem06_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:57:22,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:57:22,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:57:22,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:57:22,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:57:22,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:57:22,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:57:22,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:57:22,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:57:22,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:57:22,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:57:22,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:57:22,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:57:22,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:57:22,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:57:22,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:57:22,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:57:22,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:57:22,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:57:22,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:57:22,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:57:22,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:57:22,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:57:22,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:57:22,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:57:22,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:57:22,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:57:22,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:57:22,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:57:22,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:57:22,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:57:22,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:57:22,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:57:22,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:57:22,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:57:22,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:57:22,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:57:22,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:57:22,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:57:22,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:57:22,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:57:22,942 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 19:57:22,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:57:22,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:57:22,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:57:22,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:57:22,984 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:57:22,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:57:22,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:57:22,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:57:22,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:57:22,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:57:22,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:57:22,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:57:22,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:57:22,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:57:22,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:57:22,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:57:22,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:57:22,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:57:22,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:57:22,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:57:22,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:57:22,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:57:22,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:57:22,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:57:22,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:57:22,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:57:22,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:57:22,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:57:22,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:57:22,990 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 19:57:23,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:57:23,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:57:23,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:57:23,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:57:23,338 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:57:23,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-14 19:57:23,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3611103a3/9381597c4b824c8e92ca457c3d5d62f7/FLAG3dd7ed858 [2020-10-14 19:57:24,411 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:57:24,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-14 19:57:24,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3611103a3/9381597c4b824c8e92ca457c3d5d62f7/FLAG3dd7ed858 [2020-10-14 19:57:24,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3611103a3/9381597c4b824c8e92ca457c3d5d62f7 [2020-10-14 19:57:24,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:57:24,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:57:24,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:57:24,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:57:24,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:57:24,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:57:24" (1/1) ... [2020-10-14 19:57:24,738 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 07:57:24, skipping insertion in model container [2020-10-14 19:57:24,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:57:24" (1/1) ... [2020-10-14 19:57:24,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:57:24,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:57:27,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:57:27,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:57:28,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:57:28,157 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:57:28,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28 WrapperNode [2020-10-14 19:57:28,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:57:28,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:57:28,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:57:28,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:57:28,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (1/1) ... [2020-10-14 19:57:28,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (1/1) ... [2020-10-14 19:57:28,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (1/1) ... [2020-10-14 19:57:28,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (1/1) ... [2020-10-14 19:57:28,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (1/1) ... [2020-10-14 19:57:28,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (1/1) ... [2020-10-14 19:57:28,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (1/1) ... [2020-10-14 19:57:28,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:57:28,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:57:28,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:57:28,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:57:28,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (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 19:57:28,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:57:28,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:57:28,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:57:28,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:57:28,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:57:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:57:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:57:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:57:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:57:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:57:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:57:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:57:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:57:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:57:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:57:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:57:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:57:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:57:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:57:35,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:57:35,532 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:57:35,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:57:35 BoogieIcfgContainer [2020-10-14 19:57:35,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:57:35,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:57:35,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:57:35,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:57:35,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:57:24" (1/3) ... [2020-10-14 19:57:35,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4af5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:57:35, skipping insertion in model container [2020-10-14 19:57:35,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:57:28" (2/3) ... [2020-10-14 19:57:35,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4af5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:57:35, skipping insertion in model container [2020-10-14 19:57:35,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:57:35" (3/3) ... [2020-10-14 19:57:35,554 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label31.c [2020-10-14 19:57:35,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:57:35,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:57:35,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:57:35,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:57:35,632 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:57:35,632 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:57:35,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:57:35,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:57:35,633 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:57:35,633 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:57:35,633 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:57:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 19:57:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-14 19:57:35,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:57:35,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:35,759 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:57:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:57:35,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1364173768, now seen corresponding path program 1 times [2020-10-14 19:57:35,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:57:35,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639834244] [2020-10-14 19:57:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:57:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:42,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:42,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-14 19:57:42,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:57:42,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-14 19:57:42,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:42,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:57:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:57:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1013 [2020-10-14 19:57:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:57:43,230 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:57:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:57:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:43,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:43,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:57:43,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:57:43,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:57:43,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:43,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:57:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:57:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:57:43,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:44,219 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 19:57:44,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639834244] [2020-10-14 19:57:44,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:57:44,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:57:44,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040030219] [2020-10-14 19:57:44,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:57:44,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:57:44,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:57:44,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:57:44,242 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 19:57:44,423 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:57:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:57:57,802 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 19:57:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:57:57,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1003 [2020-10-14 19:57:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:57:57,850 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 19:57:57,851 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 19:57:57,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:57:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 19:57:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 19:57:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 19:57:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 19:57:58,073 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 1003 [2020-10-14 19:57:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:57:58,076 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 19:57:58,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:57:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 19:57:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2020-10-14 19:57:58,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:57:58,108 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:58,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:57:58,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:57:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:57:58,109 INFO L82 PathProgramCache]: Analyzing trace with hash 138153653, now seen corresponding path program 1 times [2020-10-14 19:57:58,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:57:58,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726474696] [2020-10-14 19:57:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:57:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:03,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1033 [2020-10-14 19:58:03,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:58:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5220 [2020-10-14 19:58:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:03,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:58:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:58:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-14 19:58:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:58:04,559 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:58:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:58:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:04,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:04,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:04,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:58:04,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:58:04,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:04,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:58:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:58:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:04,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:58:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:04,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:04,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:58:04,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:58:04,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:04,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:58:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:58:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:58:05,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726474696] [2020-10-14 19:58:05,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:58:05,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:58:05,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821474387] [2020-10-14 19:58:05,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:58:05,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:58:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:58:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:58:05,971 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 5 states. [2020-10-14 19:58:06,191 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:58:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:58:21,509 INFO L93 Difference]: Finished difference Result 6889 states and 11685 transitions. [2020-10-14 19:58:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:58:21,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1015 [2020-10-14 19:58:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:58:21,542 INFO L225 Difference]: With dead ends: 6889 [2020-10-14 19:58:21,542 INFO L226 Difference]: Without dead ends: 4522 [2020-10-14 19:58:21,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 19:58:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2020-10-14 19:58:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4458. [2020-10-14 19:58:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4458 states. [2020-10-14 19:58:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6813 transitions. [2020-10-14 19:58:21,701 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6813 transitions. Word has length 1015 [2020-10-14 19:58:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:58:21,703 INFO L479 AbstractCegarLoop]: Abstraction has 4458 states and 6813 transitions. [2020-10-14 19:58:21,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:58:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6813 transitions. [2020-10-14 19:58:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-14 19:58:21,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:58:21,734 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:58:21,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:58:21,734 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:58:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:58:21,735 INFO L82 PathProgramCache]: Analyzing trace with hash -335285429, now seen corresponding path program 1 times [2020-10-14 19:58:21,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:58:21,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734448699] [2020-10-14 19:58:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:58:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-14 19:58:27,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:58:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:58:27,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:27,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:58:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:58:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-14 19:58:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:28,213 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:58:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:58:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:28,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:58:28,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:58:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:28,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:58:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:58:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:28,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:58:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:28,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:28,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:58:28,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:28,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:58:28,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:28,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:58:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:58:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:58:29,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734448699] [2020-10-14 19:58:29,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:58:29,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:58:29,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378953666] [2020-10-14 19:58:29,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:58:29,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:58:29,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:58:29,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:58:29,305 INFO L87 Difference]: Start difference. First operand 4458 states and 6813 transitions. Second operand 5 states. [2020-10-14 19:58:29,513 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:58:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:58:46,315 INFO L93 Difference]: Finished difference Result 11041 states and 17400 transitions. [2020-10-14 19:58:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:58:46,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1018 [2020-10-14 19:58:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:58:46,347 INFO L225 Difference]: With dead ends: 11041 [2020-10-14 19:58:46,347 INFO L226 Difference]: Without dead ends: 6589 [2020-10-14 19:58:46,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 19:58:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2020-10-14 19:58:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 6534. [2020-10-14 19:58:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6534 states. [2020-10-14 19:58:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 9856 transitions. [2020-10-14 19:58:46,519 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 9856 transitions. Word has length 1018 [2020-10-14 19:58:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:58:46,522 INFO L479 AbstractCegarLoop]: Abstraction has 6534 states and 9856 transitions. [2020-10-14 19:58:46,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:58:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 9856 transitions. [2020-10-14 19:58:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2020-10-14 19:58:46,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:58:46,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:46,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:58:46,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:58:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:58:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash 452770194, now seen corresponding path program 1 times [2020-10-14 19:58:46,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:58:46,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581844235] [2020-10-14 19:58:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:58:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:46,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:51,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:51,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-14 19:58:51,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:58:51,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5183 [2020-10-14 19:58:51,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:51,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:58:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:58:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:58:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:52,225 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:58:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:58:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:52,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:52,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:58:52,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:58:52,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:52,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:58:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:58:52,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:52,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:58:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:52,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:58:52,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:58:52,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:52,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:58:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:58:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:58:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:52,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:52,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:58:52,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:52,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:58:52,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:52,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:58:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:58:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:58:52,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:58:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:58:52,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581844235] [2020-10-14 19:58:52,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:58:52,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:58:52,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732228552] [2020-10-14 19:58:52,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:58:52,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:58:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:58:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:58:52,981 INFO L87 Difference]: Start difference. First operand 6534 states and 9856 transitions. Second operand 7 states. [2020-10-14 19:58:53,316 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:58:53,722 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:59:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:59:20,309 INFO L93 Difference]: Finished difference Result 25893 states and 41275 transitions. [2020-10-14 19:59:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:59:20,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1032 [2020-10-14 19:59:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:59:20,394 INFO L225 Difference]: With dead ends: 25893 [2020-10-14 19:59:20,394 INFO L226 Difference]: Without dead ends: 19365 [2020-10-14 19:59:20,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:59:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19365 states. [2020-10-14 19:59:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19365 to 19314. [2020-10-14 19:59:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19314 states. [2020-10-14 19:59:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 27975 transitions. [2020-10-14 19:59:20,950 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 27975 transitions. Word has length 1032 [2020-10-14 19:59:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:59:20,951 INFO L479 AbstractCegarLoop]: Abstraction has 19314 states and 27975 transitions. [2020-10-14 19:59:20,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:59:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 27975 transitions. [2020-10-14 19:59:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2020-10-14 19:59:21,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:59:21,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:59:21,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:59:21,042 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:59:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:59:21,043 INFO L82 PathProgramCache]: Analyzing trace with hash 579656809, now seen corresponding path program 1 times [2020-10-14 19:59:21,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:59:21,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808957574] [2020-10-14 19:59:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:59:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:26,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:26,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-14 19:59:26,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:59:26,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-14 19:59:26,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:26,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:59:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:59:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1029 [2020-10-14 19:59:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:59:26,969 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:59:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:59:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:26,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:26,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:59:26,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:59:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:59:26,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:26,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:59:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:59:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:59:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:59:27,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:59:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:27,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:27,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:59:27,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:59:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:59:27,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:27,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:59:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:59:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:59:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:59:27,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 19:59:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:27,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:27,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:59:27,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:59:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 19:59:27,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:27,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:59:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:59:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:59:27,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:59:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:59:28,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808957574] [2020-10-14 19:59:28,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:59:28,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:59:28,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365742353] [2020-10-14 19:59:28,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:59:28,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:59:28,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:59:28,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:59:28,070 INFO L87 Difference]: Start difference. First operand 19314 states and 27975 transitions. Second operand 6 states. [2020-10-14 19:59:28,197 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:59:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:59:41,758 INFO L93 Difference]: Finished difference Result 58458 states and 93248 transitions. [2020-10-14 19:59:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:59:41,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1035 [2020-10-14 19:59:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:59:41,982 INFO L225 Difference]: With dead ends: 58458 [2020-10-14 19:59:41,982 INFO L226 Difference]: Without dead ends: 39150 [2020-10-14 19:59:42,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:59:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39150 states. [2020-10-14 19:59:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39150 to 38978. [2020-10-14 19:59:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38978 states. [2020-10-14 19:59:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38978 states to 38978 states and 59547 transitions. [2020-10-14 19:59:43,319 INFO L78 Accepts]: Start accepts. Automaton has 38978 states and 59547 transitions. Word has length 1035 [2020-10-14 19:59:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:59:43,321 INFO L479 AbstractCegarLoop]: Abstraction has 38978 states and 59547 transitions. [2020-10-14 19:59:43,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:59:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 38978 states and 59547 transitions. [2020-10-14 19:59:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-14 19:59:43,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:59:43,499 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:43,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:59:43,500 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:59:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:59:43,500 INFO L82 PathProgramCache]: Analyzing trace with hash -44295470, now seen corresponding path program 1 times [2020-10-14 19:59:43,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:59:43,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944328440] [2020-10-14 19:59:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:59:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:48,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:48,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-14 19:59:48,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:59:48,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-14 19:59:48,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:48,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:59:48,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:59:48,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:59:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:59:49,129 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:59:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:59:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:59:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:59:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:59:49,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:49,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:59:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:59:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:59:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:59:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:59:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:49,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:49,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:59:49,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:59:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 19:59:49,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:49,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:59:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:59:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:59:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:59:49,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 19:59:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:59:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:59:49,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:59:49,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:59:49,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:59:49,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 19:59:49,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:59:49,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:59:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:59:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:59:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:59:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:59:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:59:49,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944328440] [2020-10-14 19:59:49,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:59:49,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:59:49,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062375320] [2020-10-14 19:59:49,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:59:49,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:59:49,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:59:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:59:49,993 INFO L87 Difference]: Start difference. First operand 38978 states and 59547 transitions. Second operand 8 states. [2020-10-14 19:59:50,143 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:59:51,303 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:00:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:00:08,914 INFO L93 Difference]: Finished difference Result 118473 states and 211216 transitions. [2020-10-14 20:00:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:00:08,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1040 [2020-10-14 20:00:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:00:09,425 INFO L225 Difference]: With dead ends: 118473 [2020-10-14 20:00:09,426 INFO L226 Difference]: Without dead ends: 79501 [2020-10-14 20:00:09,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-14 20:00:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79501 states. [2020-10-14 20:00:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79501 to 79068. [2020-10-14 20:00:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79068 states. [2020-10-14 20:00:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79068 states to 79068 states and 128897 transitions. [2020-10-14 20:00:11,986 INFO L78 Accepts]: Start accepts. Automaton has 79068 states and 128897 transitions. Word has length 1040 [2020-10-14 20:00:11,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:00:11,987 INFO L479 AbstractCegarLoop]: Abstraction has 79068 states and 128897 transitions. [2020-10-14 20:00:11,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:00:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 79068 states and 128897 transitions. [2020-10-14 20:00:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-14 20:00:12,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:00:12,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:12,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:00:12,355 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:00:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:00:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash -2067572093, now seen corresponding path program 1 times [2020-10-14 20:00:12,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:00:12,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736203996] [2020-10-14 20:00:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:00:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1065 [2020-10-14 20:00:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:00:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-14 20:00:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:17,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:00:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 20:00:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-14 20:00:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:00:18,446 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:00:18,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:00:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:18,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:00:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:00:18,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:18,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:00:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:00:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:00:18,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:00:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:18,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:18,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 20:00:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:00:18,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:18,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:00:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 20:00:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:00:19,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736203996] [2020-10-14 20:00:19,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:00:19,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:00:19,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610269879] [2020-10-14 20:00:19,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:00:19,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:00:19,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:00:19,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:00:19,445 INFO L87 Difference]: Start difference. First operand 79068 states and 128897 transitions. Second operand 5 states. [2020-10-14 20:00:19,720 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:00:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:00:36,796 INFO L93 Difference]: Finished difference Result 231310 states and 396986 transitions. [2020-10-14 20:00:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:00:36,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1047 [2020-10-14 20:00:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:00:37,733 INFO L225 Difference]: With dead ends: 231310 [2020-10-14 20:00:37,733 INFO L226 Difference]: Without dead ends: 152248 [2020-10-14 20:00:37,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:00:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152248 states. [2020-10-14 20:00:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152248 to 152180. [2020-10-14 20:00:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152180 states. [2020-10-14 20:00:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152180 states to 152180 states and 251304 transitions. [2020-10-14 20:00:45,760 INFO L78 Accepts]: Start accepts. Automaton has 152180 states and 251304 transitions. Word has length 1047 [2020-10-14 20:00:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:00:45,762 INFO L479 AbstractCegarLoop]: Abstraction has 152180 states and 251304 transitions. [2020-10-14 20:00:45,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:00:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 152180 states and 251304 transitions. [2020-10-14 20:00:46,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2020-10-14 20:00:46,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:00:46,243 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:46,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:00:46,244 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:00:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:00:46,245 INFO L82 PathProgramCache]: Analyzing trace with hash -746118077, now seen corresponding path program 1 times [2020-10-14 20:00:46,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:00:46,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135359747] [2020-10-14 20:00:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:00:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1075 [2020-10-14 20:00:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:00:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-14 20:00:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:51,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:00:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 20:00:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 20:00:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:51,908 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:00:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:00:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:51,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:51,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:00:51,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:51,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:00:51,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:51,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:00:51,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:51,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:00:51,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:00:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:52,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:52,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 20:00:52,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 20:00:52,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:52,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:00:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:00:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:00:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 20:00:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:52,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:52,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:00:52,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:52,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 20:00:52,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:52,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:00:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:00:52,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:52,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 20:00:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 20:00:52,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 20:00:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:52,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:00:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:00:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 20:00:52,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 20:00:53,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135359747] [2020-10-14 20:00:53,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:00:53,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:00:53,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651051371] [2020-10-14 20:00:53,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:00:53,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:00:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:00:53,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:00:53,381 INFO L87 Difference]: Start difference. First operand 152180 states and 251304 transitions. Second operand 7 states. [2020-10-14 20:00:53,653 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129