/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem15_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:51:14,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:51:14,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:51:14,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:51:14,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:51:14,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:51:14,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:51:14,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:51:14,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:51:14,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:51:14,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:51:14,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:51:14,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:51:14,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:51:14,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:51:14,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:51:14,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:51:14,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:51:14,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:51:14,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:51:14,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:51:14,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:51:14,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:51:14,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:51:14,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:51:14,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:51:14,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:51:14,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:51:14,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:51:14,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:51:14,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:51:14,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:51:14,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:51:14,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:51:14,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:51:14,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:51:14,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:51:14,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:51:14,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:51:14,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:51:14,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:51:14,900 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 [2020-10-29 07:51:14,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:51:14,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:51:14,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:51:14,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:51:14,931 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:51:14,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:51:14,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:51:14,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:51:14,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:51:14,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:51:14,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:51:14,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:51:14,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:51:14,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:51:14,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:51:14,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:51:14,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:51:14,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:51:14,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:51:14,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:51:14,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:51:14,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:51:14,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:51:14,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:51:14,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:51:14,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:51:14,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:51:14,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:51:14,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:51:14,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:51:15,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:51:15,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:51:15,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:51:15,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:51:15,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:51:15,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-29 07:51:15,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da099d701/cc4894b14c8c4735b7c73121ce6c7194/FLAG19c2d2f62 [2020-10-29 07:51:16,353 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:51:16,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-29 07:51:16,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da099d701/cc4894b14c8c4735b7c73121ce6c7194/FLAG19c2d2f62 [2020-10-29 07:51:16,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da099d701/cc4894b14c8c4735b7c73121ce6c7194 [2020-10-29 07:51:16,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:51:16,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:51:16,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:51:16,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:51:16,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:51:16,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:51:16" (1/1) ... [2020-10-29 07:51:16,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f756d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:16, skipping insertion in model container [2020-10-29 07:51:16,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:51:16" (1/1) ... [2020-10-29 07:51:16,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:51:17,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:51:17,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:51:17,801 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:51:18,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:51:18,094 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:51:18,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18 WrapperNode [2020-10-29 07:51:18,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:51:18,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:51:18,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:51:18,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:51:18,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (1/1) ... [2020-10-29 07:51:18,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (1/1) ... [2020-10-29 07:51:18,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (1/1) ... [2020-10-29 07:51:18,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (1/1) ... [2020-10-29 07:51:18,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (1/1) ... [2020-10-29 07:51:18,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (1/1) ... [2020-10-29 07:51:18,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (1/1) ... [2020-10-29 07:51:18,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:51:18,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:51:18,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:51:18,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:51:18,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (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 [2020-10-29 07:51:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:51:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:51:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:51:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:51:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:51:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:51:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:51:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:51:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:51:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:51:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:51:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:51:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:51:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:51:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:51:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:51:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:51:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:51:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:51:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:51:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:51:21,735 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:51:21,736 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:51:21,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:51:21 BoogieIcfgContainer [2020-10-29 07:51:21,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:51:21,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:51:21,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:51:21,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:51:21,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:51:16" (1/3) ... [2020-10-29 07:51:21,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302df2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:51:21, skipping insertion in model container [2020-10-29 07:51:21,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:18" (2/3) ... [2020-10-29 07:51:21,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302df2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:51:21, skipping insertion in model container [2020-10-29 07:51:21,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:51:21" (3/3) ... [2020-10-29 07:51:21,748 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label46.c [2020-10-29 07:51:21,762 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:51:21,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:51:21,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:51:21,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:51:21,815 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:51:21,815 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:51:21,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:51:21,816 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:51:21,816 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:51:21,816 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:51:21,816 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:51:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:51:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 07:51:21,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:21,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:21,857 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:21,864 INFO L82 PathProgramCache]: Analyzing trace with hash 440131193, now seen corresponding path program 1 times [2020-10-29 07:51:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:21,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120838816] [2020-10-29 07:51:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:22,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:22,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 07:51:22,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-29 07:51:22,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:22,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 07:51:22,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:51:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:22,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:22,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:22,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:51:22,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:22,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:51:22,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120838816] [2020-10-29 07:51:22,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:51:22,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:51:22,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014905119] [2020-10-29 07:51:22,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:51:22,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:22,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:51:22,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:51:22,951 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:51:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:28,655 INFO L93 Difference]: Finished difference Result 1203 states and 2168 transitions. [2020-10-29 07:51:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:51:28,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-29 07:51:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:28,678 INFO L225 Difference]: With dead ends: 1203 [2020-10-29 07:51:28,679 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 07:51:28,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:51:28,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 07:51:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 689. [2020-10-29 07:51:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-29 07:51:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1009 transitions. [2020-10-29 07:51:28,815 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1009 transitions. Word has length 50 [2020-10-29 07:51:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:28,816 INFO L481 AbstractCegarLoop]: Abstraction has 689 states and 1009 transitions. [2020-10-29 07:51:28,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:51:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1009 transitions. [2020-10-29 07:51:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 07:51:28,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:28,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:28,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:51:28,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:28,830 INFO L82 PathProgramCache]: Analyzing trace with hash -568552754, now seen corresponding path program 1 times [2020-10-29 07:51:28,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:28,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538665470] [2020-10-29 07:51:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:30,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:30,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 07:51:30,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-10-29 07:51:30,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:30,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:51:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:30,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:30,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:30,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:30,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:51:30,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:30,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:51:31,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:31,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:31,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:51:31,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 07:51:31,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:31,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:51:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:51:31,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538665470] [2020-10-29 07:51:31,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:51:31,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:51:31,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875345700] [2020-10-29 07:51:31,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:31,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:31,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:31,350 INFO L87 Difference]: Start difference. First operand 689 states and 1009 transitions. Second operand 7 states. [2020-10-29 07:51:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:40,908 INFO L93 Difference]: Finished difference Result 1706 states and 2409 transitions. [2020-10-29 07:51:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:51:40,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-29 07:51:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:40,925 INFO L225 Difference]: With dead ends: 1706 [2020-10-29 07:51:40,925 INFO L226 Difference]: Without dead ends: 1023 [2020-10-29 07:51:40,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:51:40,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-29 07:51:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1010. [2020-10-29 07:51:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-29 07:51:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1361 transitions. [2020-10-29 07:51:40,991 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1361 transitions. Word has length 119 [2020-10-29 07:51:40,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:40,992 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1361 transitions. [2020-10-29 07:51:40,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1361 transitions. [2020-10-29 07:51:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 07:51:40,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:40,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:40,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:51:40,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:40,996 INFO L82 PathProgramCache]: Analyzing trace with hash 577578762, now seen corresponding path program 1 times [2020-10-29 07:51:40,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:40,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831722512] [2020-10-29 07:51:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:42,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 07:51:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-29 07:51:42,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:42,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:51:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:42,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:42,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:42,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:42,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:42,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:42,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:51:42,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:42,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:42,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:42,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:42,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:51:42,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 07:51:42,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:42,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:51:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:51:42,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831722512] [2020-10-29 07:51:42,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:51:42,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:51:42,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469640961] [2020-10-29 07:51:42,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:42,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:42,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:42,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:42,674 INFO L87 Difference]: Start difference. First operand 1010 states and 1361 transitions. Second operand 7 states. [2020-10-29 07:51:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:50,626 INFO L93 Difference]: Finished difference Result 2077 states and 3011 transitions. [2020-10-29 07:51:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:51:50,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-29 07:51:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:50,654 INFO L225 Difference]: With dead ends: 2077 [2020-10-29 07:51:50,654 INFO L226 Difference]: Without dead ends: 1380 [2020-10-29 07:51:50,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-29 07:51:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1341. [2020-10-29 07:51:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-29 07:51:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1735 transitions. [2020-10-29 07:51:50,722 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1735 transitions. Word has length 124 [2020-10-29 07:51:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:50,725 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 1735 transitions. [2020-10-29 07:51:50,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1735 transitions. [2020-10-29 07:51:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 07:51:50,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:50,744 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:51:50,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:51:50,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1334894784, now seen corresponding path program 1 times [2020-10-29 07:51:50,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:50,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232692151] [2020-10-29 07:51:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:55,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:55,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:51:55,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:51:55,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 07:51:55,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:55,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:55,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:51:55,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:51:55,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:55,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:55,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:51:55,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:55,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:55,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:55,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:56,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:56,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:51:56,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:51:56,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:56,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:51:56,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:51:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:56,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:56,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:51:56,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 07:51:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:56,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:51:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 85 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:51:56,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232692151] [2020-10-29 07:51:56,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:56,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:56,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474890328] [2020-10-29 07:51:56,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:51:56,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:56,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:51:56,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:51:56,733 INFO L87 Difference]: Start difference. First operand 1341 states and 1735 transitions. Second operand 8 states. [2020-10-29 07:52:08,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:08,033 INFO L93 Difference]: Finished difference Result 2762 states and 3796 transitions. [2020-10-29 07:52:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:52:08,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-29 07:52:08,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:08,051 INFO L225 Difference]: With dead ends: 2762 [2020-10-29 07:52:08,051 INFO L226 Difference]: Without dead ends: 2045 [2020-10-29 07:52:08,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:52:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-29 07:52:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1950. [2020-10-29 07:52:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-10-29 07:52:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2414 transitions. [2020-10-29 07:52:08,123 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2414 transitions. Word has length 224 [2020-10-29 07:52:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:08,124 INFO L481 AbstractCegarLoop]: Abstraction has 1950 states and 2414 transitions. [2020-10-29 07:52:08,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:52:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2414 transitions. [2020-10-29 07:52:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-29 07:52:08,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:08,131 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:52:08,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:52:08,132 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:08,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1465827532, now seen corresponding path program 1 times [2020-10-29 07:52:08,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:08,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309474899] [2020-10-29 07:52:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:13,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:13,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-29 07:52:13,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:52:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 07:52:13,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:13,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:52:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:13,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:52:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:13,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:13,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:52:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:13,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:14,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:14,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:52:14,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-29 07:52:14,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:14,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:52:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:52:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:14,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:14,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:52:14,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:52:14,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:14,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:52:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:14,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 84 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:52:14,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309474899] [2020-10-29 07:52:14,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:14,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:52:14,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359550718] [2020-10-29 07:52:14,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:52:14,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:14,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:52:14,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:52:14,911 INFO L87 Difference]: Start difference. First operand 1950 states and 2414 transitions. Second operand 8 states. [2020-10-29 07:52:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:38,679 INFO L93 Difference]: Finished difference Result 4627 states and 5918 transitions. [2020-10-29 07:52:38,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:52:38,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-10-29 07:52:38,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:38,704 INFO L225 Difference]: With dead ends: 4627 [2020-10-29 07:52:38,704 INFO L226 Difference]: Without dead ends: 2990 [2020-10-29 07:52:38,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-29 07:52:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-10-29 07:52:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2936. [2020-10-29 07:52:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2936 states. [2020-10-29 07:52:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 3571 transitions. [2020-10-29 07:52:38,825 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 3571 transitions. Word has length 330 [2020-10-29 07:52:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:38,826 INFO L481 AbstractCegarLoop]: Abstraction has 2936 states and 3571 transitions. [2020-10-29 07:52:38,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:52:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 3571 transitions. [2020-10-29 07:52:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-29 07:52:38,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:38,838 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:38,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:52:38,838 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash 644269579, now seen corresponding path program 1 times [2020-10-29 07:52:38,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:38,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656756870] [2020-10-29 07:52:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:42,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:42,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-29 07:52:42,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:42,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3420 [2020-10-29 07:52:42,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:42,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:42,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:42,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:52:42,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:52:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:42,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:52:42,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:42,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:43,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:43,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:52:43,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-29 07:52:43,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:43,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:52:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:52:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:43,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:43,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:52:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:52:43,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:43,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:52:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:52:43,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656756870] [2020-10-29 07:52:43,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:43,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:52:43,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814977213] [2020-10-29 07:52:43,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:52:43,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:43,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:52:43,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:52:43,713 INFO L87 Difference]: Start difference. First operand 2936 states and 3571 transitions. Second operand 8 states. [2020-10-29 07:52:56,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:56,167 INFO L93 Difference]: Finished difference Result 7847 states and 10168 transitions. [2020-10-29 07:52:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:52:56,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 404 [2020-10-29 07:52:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:56,205 INFO L225 Difference]: With dead ends: 7847 [2020-10-29 07:52:56,205 INFO L226 Difference]: Without dead ends: 5224 [2020-10-29 07:52:56,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:52:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-10-29 07:52:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5188. [2020-10-29 07:52:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5188 states. [2020-10-29 07:52:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6393 transitions. [2020-10-29 07:52:56,369 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6393 transitions. Word has length 404 [2020-10-29 07:52:56,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:56,371 INFO L481 AbstractCegarLoop]: Abstraction has 5188 states and 6393 transitions. [2020-10-29 07:52:56,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:52:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6393 transitions. [2020-10-29 07:52:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-29 07:52:56,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:56,381 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:56,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:52:56,382 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2066646503, now seen corresponding path program 1 times [2020-10-29 07:52:56,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:56,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686498060] [2020-10-29 07:52:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:58,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:01,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:01,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-29 07:53:01,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:53:01,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:53:01,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:01,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:53:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 324 [2020-10-29 07:53:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:53:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:01,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:01,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:53:01,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:01,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:53:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:01,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:01,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:53:01,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:01,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:53:01,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:01,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:01,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:53:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:53:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:53:02,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-29 07:53:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:53:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:53:03,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686498060] [2020-10-29 07:53:03,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:03,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:03,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358194496] [2020-10-29 07:53:03,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:03,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:03,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:03,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:03,178 INFO L87 Difference]: Start difference. First operand 5188 states and 6393 transitions. Second operand 7 states. [2020-10-29 07:53:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:19,600 INFO L93 Difference]: Finished difference Result 12080 states and 15607 transitions. [2020-10-29 07:53:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:53:19,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-29 07:53:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:19,642 INFO L225 Difference]: With dead ends: 12080 [2020-10-29 07:53:19,642 INFO L226 Difference]: Without dead ends: 7507 [2020-10-29 07:53:19,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:53:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7507 states. [2020-10-29 07:53:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7507 to 7463. [2020-10-29 07:53:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7463 states. [2020-10-29 07:53:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 9003 transitions. [2020-10-29 07:53:19,894 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 9003 transitions. Word has length 419 [2020-10-29 07:53:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:19,895 INFO L481 AbstractCegarLoop]: Abstraction has 7463 states and 9003 transitions. [2020-10-29 07:53:19,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 9003 transitions. [2020-10-29 07:53:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-29 07:53:19,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:19,906 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:19,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:53:19,907 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash 725329656, now seen corresponding path program 1 times [2020-10-29 07:53:19,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:19,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774864657] [2020-10-29 07:53:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:23,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:23,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-29 07:53:23,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3638 [2020-10-29 07:53:23,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:23,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:53:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:53:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:24,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:24,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:24,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:53:24,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 07:53:24,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:24,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:53:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:53:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:24,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:24,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:53:24,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 07:53:24,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:24,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:53:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:53:24,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774864657] [2020-10-29 07:53:24,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:24,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:24,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149479674] [2020-10-29 07:53:24,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:24,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:24,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:24,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:24,959 INFO L87 Difference]: Start difference. First operand 7463 states and 9003 transitions. Second operand 7 states. [2020-10-29 07:53:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:39,423 INFO L93 Difference]: Finished difference Result 15636 states and 19014 transitions. [2020-10-29 07:53:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:53:39,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-29 07:53:39,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:39,470 INFO L225 Difference]: With dead ends: 15636 [2020-10-29 07:53:39,470 INFO L226 Difference]: Without dead ends: 8486 [2020-10-29 07:53:39,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:53:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2020-10-29 07:53:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 8425. [2020-10-29 07:53:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8425 states. [2020-10-29 07:53:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 10066 transitions. [2020-10-29 07:53:39,736 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 10066 transitions. Word has length 435 [2020-10-29 07:53:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:39,737 INFO L481 AbstractCegarLoop]: Abstraction has 8425 states and 10066 transitions. [2020-10-29 07:53:39,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 10066 transitions. [2020-10-29 07:53:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-29 07:53:39,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:39,743 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:39,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:53:39,743 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:39,744 INFO L82 PathProgramCache]: Analyzing trace with hash 295065200, now seen corresponding path program 1 times [2020-10-29 07:53:39,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:39,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405473602] [2020-10-29 07:53:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:39,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:40,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:40,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-29 07:53:40,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-29 07:53:40,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:40,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:53:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 07:53:40,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:40,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:40,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:40,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:40,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:40,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:53:40,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:40,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:40,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:41,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:41,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:41,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:53:41,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 07:53:41,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:41,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:53:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:53:41,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405473602] [2020-10-29 07:53:41,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:41,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:53:41,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798627980] [2020-10-29 07:53:41,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:53:41,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:53:41,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:53:41,343 INFO L87 Difference]: Start difference. First operand 8425 states and 10066 transitions. Second operand 5 states. [2020-10-29 07:53:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:49,727 INFO L93 Difference]: Finished difference Result 17599 states and 22260 transitions. [2020-10-29 07:53:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:53:49,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 447 [2020-10-29 07:53:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:49,777 INFO L225 Difference]: With dead ends: 17599 [2020-10-29 07:53:49,777 INFO L226 Difference]: Without dead ends: 12591 [2020-10-29 07:53:49,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:53:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12591 states. [2020-10-29 07:53:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12591 to 12575. [2020-10-29 07:53:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12575 states. [2020-10-29 07:53:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12575 states to 12575 states and 15522 transitions. [2020-10-29 07:53:50,094 INFO L78 Accepts]: Start accepts. Automaton has 12575 states and 15522 transitions. Word has length 447 [2020-10-29 07:53:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:50,095 INFO L481 AbstractCegarLoop]: Abstraction has 12575 states and 15522 transitions. [2020-10-29 07:53:50,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:53:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12575 states and 15522 transitions. [2020-10-29 07:53:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-29 07:53:50,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:50,105 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:50,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:53:50,105 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1642333009, now seen corresponding path program 1 times [2020-10-29 07:53:50,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:50,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014591310] [2020-10-29 07:53:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:54,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:54,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-29 07:53:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:53:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4473 [2020-10-29 07:53:54,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:54,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:54,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:53:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:53:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:54,996 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:53:54,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:55,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:55,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:53:55,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:55,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:55,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:55,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 07:53:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:55,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:55,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:55,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:53:55,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 07:53:55,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:55,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:53:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:55,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:53:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:55,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:53:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 07:53:55,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:55,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:53:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:53:55,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014591310] [2020-10-29 07:53:55,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:55,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:55,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884691730] [2020-10-29 07:53:55,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:55,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:55,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:55,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:55,998 INFO L87 Difference]: Start difference. First operand 12575 states and 15522 transitions. Second operand 7 states. [2020-10-29 07:54:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:09,092 INFO L93 Difference]: Finished difference Result 24987 states and 31816 transitions. [2020-10-29 07:54:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:09,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-29 07:54:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:09,165 INFO L225 Difference]: With dead ends: 24987 [2020-10-29 07:54:09,165 INFO L226 Difference]: Without dead ends: 12725 [2020-10-29 07:54:09,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12725 states. [2020-10-29 07:54:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12725 to 12608. [2020-10-29 07:54:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12608 states. [2020-10-29 07:54:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12608 states to 12608 states and 15097 transitions. [2020-10-29 07:54:09,626 INFO L78 Accepts]: Start accepts. Automaton has 12608 states and 15097 transitions. Word has length 520 [2020-10-29 07:54:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:09,627 INFO L481 AbstractCegarLoop]: Abstraction has 12608 states and 15097 transitions. [2020-10-29 07:54:09,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 12608 states and 15097 transitions. [2020-10-29 07:54:09,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-29 07:54:09,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:09,638 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:54:09,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:54:09,639 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:09,639 INFO L82 PathProgramCache]: Analyzing trace with hash 954088020, now seen corresponding path program 1 times [2020-10-29 07:54:09,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:09,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716909406] [2020-10-29 07:54:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:14,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:14,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-10-29 07:54:14,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:54:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 07:54:14,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:14,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:54:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:54:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 578 [2020-10-29 07:54:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:15,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:15,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:54:15,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:15,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:54:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:15,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:15,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:54:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:15,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:54:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:16,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:16,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:16,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-29 07:54:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:16,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:54:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:54:16,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716909406] [2020-10-29 07:54:16,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:16,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:54:16,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391012074] [2020-10-29 07:54:16,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:54:16,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:16,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:54:16,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:54:16,902 INFO L87 Difference]: Start difference. First operand 12608 states and 15097 transitions. Second operand 9 states. [2020-10-29 07:54:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:37,783 INFO L93 Difference]: Finished difference Result 26827 states and 34423 transitions. [2020-10-29 07:54:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:54:37,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 573 [2020-10-29 07:54:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:37,871 INFO L225 Difference]: With dead ends: 26827 [2020-10-29 07:54:37,871 INFO L226 Difference]: Without dead ends: 15467 [2020-10-29 07:54:37,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:54:37,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2020-10-29 07:54:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 14845. [2020-10-29 07:54:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14845 states. [2020-10-29 07:54:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14845 states to 14845 states and 17613 transitions. [2020-10-29 07:54:38,429 INFO L78 Accepts]: Start accepts. Automaton has 14845 states and 17613 transitions. Word has length 573 [2020-10-29 07:54:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:38,430 INFO L481 AbstractCegarLoop]: Abstraction has 14845 states and 17613 transitions. [2020-10-29 07:54:38,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:54:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 14845 states and 17613 transitions. [2020-10-29 07:54:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-29 07:54:38,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:38,442 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:38,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:54:38,442 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:38,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1950968005, now seen corresponding path program 1 times [2020-10-29 07:54:38,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:38,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822460143] [2020-10-29 07:54:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:43,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:43,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-29 07:54:43,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 07:54:43,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:43,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:54:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:54:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 07:54:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:43,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:44,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:44,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:54:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:44,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:54:44,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:54:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:44,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:44,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 07:54:44,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 07:54:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:44,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 07:54:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 471 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:54:45,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822460143] [2020-10-29 07:54:45,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:45,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:54:45,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229491304] [2020-10-29 07:54:45,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:54:45,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:45,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:54:45,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:54:45,424 INFO L87 Difference]: Start difference. First operand 14845 states and 17613 transitions. Second operand 10 states. [2020-10-29 07:54:48,597 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-29 07:54:52,826 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65