/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:55:25,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:55:25,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:55:25,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:55:25,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:55:25,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:55:25,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:55:25,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:55:25,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:55:25,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:55:25,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:55:25,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:55:25,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:55:25,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:55:25,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:55:25,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:55:25,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:55:25,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:55:25,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:55:25,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:55:25,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:55:25,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:55:25,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:55:25,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:55:25,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:55:25,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:55:25,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:55:25,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:55:25,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:55:25,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:55:25,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:55:25,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:55:25,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:55:25,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:55:25,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:55:25,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:55:25,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:55:25,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:55:25,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:55:25,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:55:25,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:55:25,724 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 [2020-10-28 13:55:25,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:55:25,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:55:25,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:55:25,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:55:25,754 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:55:25,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:55:25,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:55:25,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:55:25,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:55:25,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:55:25,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:55:25,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:55:25,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:55:25,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:55:25,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:55:25,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:55:25,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:55:25,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:55:25,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:55:25,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:55:25,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:55:25,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:55:25,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:55:25,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:55:25,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:55:25,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:55:25,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:55:25,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:55:25,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:55:25,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:55:26,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:55:26,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:55:26,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:55:26,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:55:26,241 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:55:26,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2020-10-28 13:55:26,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1948e43ce/e82b74a0d2194e3e89f5539122f6bf13/FLAG37777b395 [2020-10-28 13:55:27,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:55:27,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2020-10-28 13:55:27,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1948e43ce/e82b74a0d2194e3e89f5539122f6bf13/FLAG37777b395 [2020-10-28 13:55:27,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1948e43ce/e82b74a0d2194e3e89f5539122f6bf13 [2020-10-28 13:55:27,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:55:27,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:55:27,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:55:27,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:55:27,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:55:27,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:55:27" (1/1) ... [2020-10-28 13:55:27,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d5935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:27, skipping insertion in model container [2020-10-28 13:55:27,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:55:27" (1/1) ... [2020-10-28 13:55:27,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:55:27,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:55:29,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:55:29,140 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:55:29,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:55:29,800 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:55:29,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29 WrapperNode [2020-10-28 13:55:29,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:55:29,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:55:29,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:55:29,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:55:29,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (1/1) ... [2020-10-28 13:55:29,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (1/1) ... [2020-10-28 13:55:29,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (1/1) ... [2020-10-28 13:55:29,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (1/1) ... [2020-10-28 13:55:30,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (1/1) ... [2020-10-28 13:55:30,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (1/1) ... [2020-10-28 13:55:30,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (1/1) ... [2020-10-28 13:55:30,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:55:30,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:55:30,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:55:30,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:55:30,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (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 [2020-10-28 13:55:30,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:55:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:55:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:55:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:55:30,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:55:30,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:55:30,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:55:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:55:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:55:30,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:55:30,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:55:30,251 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:55:30,251 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:55:30,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:55:30,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:55:30,252 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:55:30,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:55:30,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:55:30,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:55:30,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:55:30,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:55:30,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:55:30,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:55:34,646 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:55:34,646 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:55:34,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:55:34 BoogieIcfgContainer [2020-10-28 13:55:34,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:55:34,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:55:34,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:55:34,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:55:34,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:55:27" (1/3) ... [2020-10-28 13:55:34,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5ba20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:55:34, skipping insertion in model container [2020-10-28 13:55:34,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:29" (2/3) ... [2020-10-28 13:55:34,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5ba20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:55:34, skipping insertion in model container [2020-10-28 13:55:34,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:55:34" (3/3) ... [2020-10-28 13:55:34,669 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label37.c [2020-10-28 13:55:34,681 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:55:34,687 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:55:34,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:55:34,733 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:55:34,733 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:55:34,733 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:55:34,734 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:55:34,734 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:55:34,734 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:55:34,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:55:34,734 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:55:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:55:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 13:55:34,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:34,781 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] [2020-10-28 13:55:34,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:34,788 INFO L82 PathProgramCache]: Analyzing trace with hash 932050680, now seen corresponding path program 1 times [2020-10-28 13:55:34,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:34,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857477435] [2020-10-28 13:55:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:55:35,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-28 13:55:35,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:55:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:55:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:55:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:55:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:35,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:55:35,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:35,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:55:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:55:35,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857477435] [2020-10-28 13:55:35,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:55:35,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:55:35,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620066509] [2020-10-28 13:55:35,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:55:35,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:35,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:55:35,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:55:35,935 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:55:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:50,174 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-28 13:55:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:55:50,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-28 13:55:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:50,224 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:55:50,224 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:55:50,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:55:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:55:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:55:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-28 13:55:50,444 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 63 [2020-10-28 13:55:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:50,444 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-28 13:55:50,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:55:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-28 13:55:50,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 13:55:50,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:50,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:55:50,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:55:50,452 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:50,454 INFO L82 PathProgramCache]: Analyzing trace with hash -261449859, now seen corresponding path program 1 times [2020-10-28 13:55:50,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:50,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880672669] [2020-10-28 13:55:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:51,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:51,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 13:55:51,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:55:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-28 13:55:51,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:51,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:55:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:55:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:55:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:55:51,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:51,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:51,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:51,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:51,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:55:51,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:51,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:51,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:51,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:55:51,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:51,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:51,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:55:51,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:55:51,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:51,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:55:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:55:52,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880672669] [2020-10-28 13:55:52,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:55:52,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:55:52,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511453198] [2020-10-28 13:55:52,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:52,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:52,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:52,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:52,139 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-28 13:56:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:03,019 INFO L93 Difference]: Finished difference Result 5076 states and 8419 transitions. [2020-10-28 13:56:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:56:03,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 13:56:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:03,049 INFO L225 Difference]: With dead ends: 5076 [2020-10-28 13:56:03,049 INFO L226 Difference]: Without dead ends: 2946 [2020-10-28 13:56:03,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:56:03,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-10-28 13:56:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2882. [2020-10-28 13:56:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-10-28 13:56:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4536 transitions. [2020-10-28 13:56:03,207 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4536 transitions. Word has length 134 [2020-10-28 13:56:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:03,210 INFO L481 AbstractCegarLoop]: Abstraction has 2882 states and 4536 transitions. [2020-10-28 13:56:03,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4536 transitions. [2020-10-28 13:56:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 13:56:03,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:03,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:56:03,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:56:03,229 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:03,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1273676356, now seen corresponding path program 1 times [2020-10-28 13:56:03,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:03,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448520109] [2020-10-28 13:56:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:08,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:08,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 13:56:08,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:56:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 13:56:08,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:08,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:56:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:56:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:56:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:08,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:08,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:08,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:08,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:08,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:56:08,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:08,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:56:08,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:08,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:56:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:08,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 13:56:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:08,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:56:08,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:56:08,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:08,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:56:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:56:08,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448520109] [2020-10-28 13:56:08,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:08,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:08,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63783522] [2020-10-28 13:56:08,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:08,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:08,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:08,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:08,794 INFO L87 Difference]: Start difference. First operand 2882 states and 4536 transitions. Second operand 7 states. [2020-10-28 13:56:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:20,501 INFO L93 Difference]: Finished difference Result 8761 states and 14006 transitions. [2020-10-28 13:56:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:56:20,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-28 13:56:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:20,534 INFO L225 Difference]: With dead ends: 8761 [2020-10-28 13:56:20,534 INFO L226 Difference]: Without dead ends: 5885 [2020-10-28 13:56:20,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:56:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2020-10-28 13:56:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 5101. [2020-10-28 13:56:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5101 states. [2020-10-28 13:56:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 7143 transitions. [2020-10-28 13:56:20,710 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 7143 transitions. Word has length 204 [2020-10-28 13:56:20,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:20,711 INFO L481 AbstractCegarLoop]: Abstraction has 5101 states and 7143 transitions. [2020-10-28 13:56:20,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 7143 transitions. [2020-10-28 13:56:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 13:56:20,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:20,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:56:20,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:56:20,715 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2063129116, now seen corresponding path program 1 times [2020-10-28 13:56:20,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:20,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279033679] [2020-10-28 13:56:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:21,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:21,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:56:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:56:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-28 13:56:21,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:21,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:56:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:56:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:56:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:22,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:22,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:22,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:22,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:22,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:56:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:22,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:56:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:22,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:22,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:56:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:56:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:22,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:56:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 13:56:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:22,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:56:22,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:56:22,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:22,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:56:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 110 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:56:22,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279033679] [2020-10-28 13:56:22,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:22,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:22,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192321527] [2020-10-28 13:56:22,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:22,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:22,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:22,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:22,446 INFO L87 Difference]: Start difference. First operand 5101 states and 7143 transitions. Second operand 7 states. [2020-10-28 13:56:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:33,108 INFO L93 Difference]: Finished difference Result 11888 states and 16428 transitions. [2020-10-28 13:56:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:56:33,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-28 13:56:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:33,147 INFO L225 Difference]: With dead ends: 11888 [2020-10-28 13:56:33,147 INFO L226 Difference]: Without dead ends: 6793 [2020-10-28 13:56:33,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:56:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6793 states. [2020-10-28 13:56:33,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6793 to 6592. [2020-10-28 13:56:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6592 states. [2020-10-28 13:56:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 8758 transitions. [2020-10-28 13:56:33,364 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 8758 transitions. Word has length 224 [2020-10-28 13:56:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:33,364 INFO L481 AbstractCegarLoop]: Abstraction has 6592 states and 8758 transitions. [2020-10-28 13:56:33,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 8758 transitions. [2020-10-28 13:56:33,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 13:56:33,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:33,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:56:33,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:56:33,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:33,370 INFO L82 PathProgramCache]: Analyzing trace with hash 939895716, now seen corresponding path program 1 times [2020-10-28 13:56:33,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:33,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707772213] [2020-10-28 13:56:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:38,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-28 13:56:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:56:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:56:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:38,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:56:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:56:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:56:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:38,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:38,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:38,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:38,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:56:38,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:38,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:56:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:56:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:38,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:56:38,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 13:56:38,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:38,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:56:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:39,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 13:56:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:39,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:39,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:56:39,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:56:39,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:39,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:56:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 110 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:56:39,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707772213] [2020-10-28 13:56:39,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:39,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:39,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796124820] [2020-10-28 13:56:39,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:39,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:39,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:39,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:39,341 INFO L87 Difference]: Start difference. First operand 6592 states and 8758 transitions. Second operand 7 states. [2020-10-28 13:56:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:52,594 INFO L93 Difference]: Finished difference Result 16874 states and 23247 transitions. [2020-10-28 13:56:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:56:52,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-28 13:56:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:52,639 INFO L225 Difference]: With dead ends: 16874 [2020-10-28 13:56:52,640 INFO L226 Difference]: Without dead ends: 11708 [2020-10-28 13:56:52,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:56:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2020-10-28 13:56:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 10261. [2020-10-28 13:56:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10261 states. [2020-10-28 13:56:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10261 states to 10261 states and 12952 transitions. [2020-10-28 13:56:52,949 INFO L78 Accepts]: Start accepts. Automaton has 10261 states and 12952 transitions. Word has length 231 [2020-10-28 13:56:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:52,949 INFO L481 AbstractCegarLoop]: Abstraction has 10261 states and 12952 transitions. [2020-10-28 13:56:52,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 10261 states and 12952 transitions. [2020-10-28 13:56:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-28 13:56:52,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:52,960 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:56:52,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:56:52,960 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:52,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1693742995, now seen corresponding path program 1 times [2020-10-28 13:56:52,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:52,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200592908] [2020-10-28 13:56:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:58,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:58,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-28 13:56:58,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:56:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 13:56:58,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:58,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:56:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:56:58,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:58,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:58,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:56:58,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:58,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:58,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:58,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:56:58,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:56:58,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:58,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:56:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:56:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:58,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:58,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:56:58,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:56:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:58,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:56:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-28 13:56:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:58,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:58,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:56:58,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:56:58,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:58,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:56:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 263 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:56:59,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200592908] [2020-10-28 13:56:59,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:59,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:59,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544498402] [2020-10-28 13:56:59,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:59,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:59,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:59,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:59,168 INFO L87 Difference]: Start difference. First operand 10261 states and 12952 transitions. Second operand 7 states. [2020-10-28 13:57:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:12,290 INFO L93 Difference]: Finished difference Result 20886 states and 27838 transitions. [2020-10-28 13:57:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:57:12,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-28 13:57:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:12,323 INFO L225 Difference]: With dead ends: 20886 [2020-10-28 13:57:12,324 INFO L226 Difference]: Without dead ends: 9825 [2020-10-28 13:57:12,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:57:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9825 states. [2020-10-28 13:57:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9825 to 9633. [2020-10-28 13:57:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9633 states. [2020-10-28 13:57:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9633 states to 9633 states and 11085 transitions. [2020-10-28 13:57:12,634 INFO L78 Accepts]: Start accepts. Automaton has 9633 states and 11085 transitions. Word has length 418 [2020-10-28 13:57:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:12,634 INFO L481 AbstractCegarLoop]: Abstraction has 9633 states and 11085 transitions. [2020-10-28 13:57:12,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9633 states and 11085 transitions. [2020-10-28 13:57:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-28 13:57:12,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:12,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:12,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:57:12,648 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1772215035, now seen corresponding path program 1 times [2020-10-28 13:57:12,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:12,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127484946] [2020-10-28 13:57:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:13,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:17,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:17,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-28 13:57:17,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:57:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:57:17,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:17,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:57:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:57:17,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:17,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:17,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:17,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:17,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:17,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:17,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:57:17,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:17,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:17,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:18,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 13:57:18,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:18,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:57:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:18,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:57:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:18,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:57:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:57:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:18,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:18,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:18,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:57:18,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:57:18,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:18,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:57:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:18,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:57:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:18,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:18,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:18,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:57:18,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:18,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:57:18,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:18,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:57:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:18,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 256 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:57:18,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127484946] [2020-10-28 13:57:18,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:18,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:18,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542997740] [2020-10-28 13:57:18,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:18,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:18,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:18,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:18,955 INFO L87 Difference]: Start difference. First operand 9633 states and 11085 transitions. Second operand 7 states. [2020-10-28 13:57:28,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:28,013 INFO L93 Difference]: Finished difference Result 24527 states and 29346 transitions. [2020-10-28 13:57:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:57:28,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 532 [2020-10-28 13:57:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:28,067 INFO L225 Difference]: With dead ends: 24527 [2020-10-28 13:57:28,067 INFO L226 Difference]: Without dead ends: 15602 [2020-10-28 13:57:28,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:57:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15602 states. [2020-10-28 13:57:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15602 to 14745. [2020-10-28 13:57:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14745 states. [2020-10-28 13:57:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14745 states to 14745 states and 17322 transitions. [2020-10-28 13:57:28,439 INFO L78 Accepts]: Start accepts. Automaton has 14745 states and 17322 transitions. Word has length 532 [2020-10-28 13:57:28,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:28,440 INFO L481 AbstractCegarLoop]: Abstraction has 14745 states and 17322 transitions. [2020-10-28 13:57:28,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14745 states and 17322 transitions. [2020-10-28 13:57:28,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2020-10-28 13:57:28,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:28,465 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:28,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:57:28,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1960212109, now seen corresponding path program 1 times [2020-10-28 13:57:28,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:28,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258775417] [2020-10-28 13:57:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:33,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:33,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 677 [2020-10-28 13:57:33,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 13:57:33,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:33,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-10-28 13:57:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 13:57:33,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:33,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:57:33,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:33,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:33,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:57:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:33,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:34,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:34,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:34,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:57:34,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:34,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:57:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:34,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:34,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:57:34,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:57:34,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:34,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:57:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:57:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:34,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:34,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 13:57:34,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:34,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 13:57:34,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:34,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:57:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 13:57:35,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258775417] [2020-10-28 13:57:35,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:35,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:35,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937327210] [2020-10-28 13:57:35,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:35,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:35,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:35,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:35,057 INFO L87 Difference]: Start difference. First operand 14745 states and 17322 transitions. Second operand 7 states. [2020-10-28 13:57:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:44,239 INFO L93 Difference]: Finished difference Result 36725 states and 44543 transitions. [2020-10-28 13:57:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:57:44,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 659 [2020-10-28 13:57:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:44,308 INFO L225 Difference]: With dead ends: 36725 [2020-10-28 13:57:44,308 INFO L226 Difference]: Without dead ends: 22688 [2020-10-28 13:57:44,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:57:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22688 states. [2020-10-28 13:57:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22688 to 22625. [2020-10-28 13:57:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22625 states. [2020-10-28 13:57:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22625 states to 22625 states and 26728 transitions. [2020-10-28 13:57:44,838 INFO L78 Accepts]: Start accepts. Automaton has 22625 states and 26728 transitions. Word has length 659 [2020-10-28 13:57:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:44,839 INFO L481 AbstractCegarLoop]: Abstraction has 22625 states and 26728 transitions. [2020-10-28 13:57:44,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 22625 states and 26728 transitions. [2020-10-28 13:57:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2020-10-28 13:57:44,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:44,864 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:57:44,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:57:44,864 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1780727966, now seen corresponding path program 1 times [2020-10-28 13:57:44,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:44,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954363760] [2020-10-28 13:57:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:50,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:50,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 685 [2020-10-28 13:57:50,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 13:57:50,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:50,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:57:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:57:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:50,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:50,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:50,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:57:50,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:50,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:50,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:50,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:50,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:50,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:57:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:50,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:50,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:50,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:50,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:50,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:57:50,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:50,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:57:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:50,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:57:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:57:50,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:50,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:57:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:57:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:50,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:57:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-28 13:57:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:50,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:50,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 13:57:50,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:57:50,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:50,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-28 13:57:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 414 proven. 107 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-28 13:57:51,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954363760] [2020-10-28 13:57:51,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:51,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:51,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483303870] [2020-10-28 13:57:51,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:51,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:51,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:51,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:51,151 INFO L87 Difference]: Start difference. First operand 22625 states and 26728 transitions. Second operand 7 states. [2020-10-28 13:58:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:02,608 INFO L93 Difference]: Finished difference Result 50423 states and 60760 transitions. [2020-10-28 13:58:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:58:02,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 665 [2020-10-28 13:58:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:02,680 INFO L225 Difference]: With dead ends: 50423 [2020-10-28 13:58:02,680 INFO L226 Difference]: Without dead ends: 28506 [2020-10-28 13:58:02,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:58:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28506 states. [2020-10-28 13:58:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28506 to 28356. [2020-10-28 13:58:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28356 states. [2020-10-28 13:58:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28356 states to 28356 states and 33012 transitions. [2020-10-28 13:58:03,246 INFO L78 Accepts]: Start accepts. Automaton has 28356 states and 33012 transitions. Word has length 665 [2020-10-28 13:58:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:03,247 INFO L481 AbstractCegarLoop]: Abstraction has 28356 states and 33012 transitions. [2020-10-28 13:58:03,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 28356 states and 33012 transitions. [2020-10-28 13:58:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-10-28 13:58:03,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:03,276 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:58:03,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:58:03,277 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:03,277 INFO L82 PathProgramCache]: Analyzing trace with hash 260065209, now seen corresponding path program 1 times [2020-10-28 13:58:03,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:03,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218442189] [2020-10-28 13:58:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 704 [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-10-28 13:58:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-28 13:58:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:08,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:08,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:58:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:08,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:58:08,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:58:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:08,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:58:08,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:58:08,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:58:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:58:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:08,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 480 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 13:58:09,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218442189] [2020-10-28 13:58:09,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:09,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:09,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69077789] [2020-10-28 13:58:09,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:09,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:09,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:09,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:09,541 INFO L87 Difference]: Start difference. First operand 28356 states and 33012 transitions. Second operand 7 states. [2020-10-28 13:58:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:20,418 INFO L93 Difference]: Finished difference Result 62437 states and 73684 transitions. [2020-10-28 13:58:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:58:20,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 686 [2020-10-28 13:58:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:20,517 INFO L225 Difference]: With dead ends: 62437 [2020-10-28 13:58:20,517 INFO L226 Difference]: Without dead ends: 32650 [2020-10-28 13:58:20,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:58:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32650 states. [2020-10-28 13:58:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32650 to 32600. [2020-10-28 13:58:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32600 states. [2020-10-28 13:58:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32600 states to 32600 states and 37640 transitions. [2020-10-28 13:58:21,405 INFO L78 Accepts]: Start accepts. Automaton has 32600 states and 37640 transitions. Word has length 686 [2020-10-28 13:58:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:21,406 INFO L481 AbstractCegarLoop]: Abstraction has 32600 states and 37640 transitions. [2020-10-28 13:58:21,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 32600 states and 37640 transitions. [2020-10-28 13:58:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2020-10-28 13:58:21,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:21,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:58:21,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:58:21,425 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:21,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:21,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1969681149, now seen corresponding path program 1 times [2020-10-28 13:58:21,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:21,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571453309] [2020-10-28 13:58:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:21,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 733 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 13:58:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:26,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:26,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:26,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:58:26,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:26,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:26,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:26,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:26,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:26,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:26,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:26,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:58:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:58:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:58:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:27,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:58:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:27,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:58:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 13:58:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 509 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 13:58:27,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571453309] [2020-10-28 13:58:27,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:27,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:27,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338681133] [2020-10-28 13:58:27,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:27,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:27,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:27,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:27,902 INFO L87 Difference]: Start difference. First operand 32600 states and 37640 transitions. Second operand 7 states. [2020-10-28 13:58:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:37,652 INFO L93 Difference]: Finished difference Result 78023 states and 91043 transitions. [2020-10-28 13:58:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:58:37,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 715 [2020-10-28 13:58:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:37,777 INFO L225 Difference]: With dead ends: 78023 [2020-10-28 13:58:37,777 INFO L226 Difference]: Without dead ends: 46131 [2020-10-28 13:58:37,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:58:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46131 states. [2020-10-28 13:58:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46131 to 43960. [2020-10-28 13:58:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43960 states. [2020-10-28 13:58:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43960 states to 43960 states and 51089 transitions. [2020-10-28 13:58:38,943 INFO L78 Accepts]: Start accepts. Automaton has 43960 states and 51089 transitions. Word has length 715 [2020-10-28 13:58:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:38,944 INFO L481 AbstractCegarLoop]: Abstraction has 43960 states and 51089 transitions. [2020-10-28 13:58:38,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 43960 states and 51089 transitions. [2020-10-28 13:58:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-28 13:58:38,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:38,973 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:38,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:58:38,974 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1053726970, now seen corresponding path program 1 times [2020-10-28 13:58:38,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:38,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482392540] [2020-10-28 13:58:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:44,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-28 13:58:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:58:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 13:58:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:44,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 577 [2020-10-28 13:58:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-28 13:58:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:44,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:44,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:44,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:44,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:44,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:44,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:58:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:58:44,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:44,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:44,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:44,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:58:44,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:58:44,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:44,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:44,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:58:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:44,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:58:44,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:58:44,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:44,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:44,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:58:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:44,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:44,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:58:44,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:58:44,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:44,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:58:44,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-28 13:58:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 13:58:45,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 13:58:45,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:58:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 664 proven. 2 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-10-28 13:58:45,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482392540] [2020-10-28 13:58:45,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:45,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:58:45,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52162206] [2020-10-28 13:58:45,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:58:45,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:45,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:58:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:58:45,679 INFO L87 Difference]: Start difference. First operand 43960 states and 51089 transitions. Second operand 8 states.