/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:12:04,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:12:04,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:12:04,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:12:04,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:12:04,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:12:04,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:12:04,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:12:04,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:12:04,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:12:04,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:12:04,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:12:04,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:12:04,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:12:04,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:12:04,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:12:04,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:12:04,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:12:04,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:12:04,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:12:04,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:12:04,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:12:04,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:12:04,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:12:04,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:12:04,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:12:04,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:12:04,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:12:04,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:12:04,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:12:04,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:12:04,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:12:04,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:12:04,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:12:04,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:12:04,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:12:04,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:12:04,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:12:04,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:12:04,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:12:04,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:12:04,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:12:04,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:12:04,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:12:04,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:12:04,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:12:04,868 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:12:04,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:12:04,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:12:04,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:12:04,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:12:04,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:12:04,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:12:04,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:12:04,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:12:04,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:12:04,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:12:04,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:12:04,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:12:04,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:12:04,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:12:04,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:12:04,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:12:04,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:12:04,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:12:04,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:12:04,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:12:04,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:12:04,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:12:04,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:12:04,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:12:04,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:12:05,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:12:05,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:12:05,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:12:05,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:12:05,302 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:12:05,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57.c [2020-10-28 12:12:05,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b0ad928f/26c12c3801bc4824a9fc7dabda3d9679/FLAG373dc298a [2020-10-28 12:12:06,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:12:06,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label57.c [2020-10-28 12:12:06,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b0ad928f/26c12c3801bc4824a9fc7dabda3d9679/FLAG373dc298a [2020-10-28 12:12:06,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b0ad928f/26c12c3801bc4824a9fc7dabda3d9679 [2020-10-28 12:12:06,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:12:06,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:12:06,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:12:06,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:12:06,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:12:06,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:12:06" (1/1) ... [2020-10-28 12:12:06,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d4b374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:06, skipping insertion in model container [2020-10-28 12:12:06,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:12:06" (1/1) ... [2020-10-28 12:12:06,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:12:06,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:12:07,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:12:07,327 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:12:07,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:12:07,562 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:12:07,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07 WrapperNode [2020-10-28 12:12:07,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:12:07,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:12:07,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:12:07,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:12:07,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... [2020-10-28 12:12:07,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... [2020-10-28 12:12:07,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... [2020-10-28 12:12:07,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... [2020-10-28 12:12:07,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... [2020-10-28 12:12:07,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... [2020-10-28 12:12:07,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... [2020-10-28 12:12:07,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:12:07,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:12:07,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:12:07,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:12:07,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:12:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:12:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:12:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:12:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:12:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:12:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:12:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:12:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:12:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:12:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:12:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:12:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:12:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:12:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:12:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:12:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:12:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:12:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:12:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:12:09,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:12:09,726 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:12:09,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:12:09 BoogieIcfgContainer [2020-10-28 12:12:09,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:12:09,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:12:09,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:12:09,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:12:09,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:12:06" (1/3) ... [2020-10-28 12:12:09,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed6139f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:12:09, skipping insertion in model container [2020-10-28 12:12:09,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:07" (2/3) ... [2020-10-28 12:12:09,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed6139f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:12:09, skipping insertion in model container [2020-10-28 12:12:09,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:12:09" (3/3) ... [2020-10-28 12:12:09,740 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label57.c [2020-10-28 12:12:09,756 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:12:09,763 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:12:09,780 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:12:09,819 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:12:09,819 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:12:09,820 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:12:09,820 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:12:09,820 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:12:09,820 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:12:09,820 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:12:09,820 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:12:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:12:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 12:12:09,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:09,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:09,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:09,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1488738090, now seen corresponding path program 1 times [2020-10-28 12:12:09,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:09,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063689762] [2020-10-28 12:12:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 12:12:10,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-28 12:12:10,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:10,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:12:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:12:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 12:12:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:12:11,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:11,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:12:11,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:12:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:12:11,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063689762] [2020-10-28 12:12:11,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:12:11,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:12:11,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783041702] [2020-10-28 12:12:11,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:11,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:11,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:11,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:11,162 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-28 12:12:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:16,107 INFO L93 Difference]: Finished difference Result 997 states and 1783 transitions. [2020-10-28 12:12:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:12:16,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-28 12:12:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:16,132 INFO L225 Difference]: With dead ends: 997 [2020-10-28 12:12:16,133 INFO L226 Difference]: Without dead ends: 631 [2020-10-28 12:12:16,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-28 12:12:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2020-10-28 12:12:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-28 12:12:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 865 transitions. [2020-10-28 12:12:16,262 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 865 transitions. Word has length 53 [2020-10-28 12:12:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:16,263 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 865 transitions. [2020-10-28 12:12:16,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:12:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 865 transitions. [2020-10-28 12:12:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 12:12:16,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:16,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:16,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:12:16,271 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:16,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1725347365, now seen corresponding path program 1 times [2020-10-28 12:12:16,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:16,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199352391] [2020-10-28 12:12:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:16,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:18,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:12:18,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2448 [2020-10-28 12:12:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:18,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:12:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:12:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:12:18,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:12:18,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:19,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:12:19,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:12:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:12:19,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:12:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 12:12:19,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:12:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:12:19,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199352391] [2020-10-28 12:12:19,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:12:19,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:12:19,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819063338] [2020-10-28 12:12:19,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:19,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:19,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:19,417 INFO L87 Difference]: Start difference. First operand 625 states and 865 transitions. Second operand 7 states. [2020-10-28 12:12:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:22,844 INFO L93 Difference]: Finished difference Result 1873 states and 2658 transitions. [2020-10-28 12:12:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:12:22,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-28 12:12:22,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:22,860 INFO L225 Difference]: With dead ends: 1873 [2020-10-28 12:12:22,860 INFO L226 Difference]: Without dead ends: 1254 [2020-10-28 12:12:22,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-10-28 12:12:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1216. [2020-10-28 12:12:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-28 12:12:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1619 transitions. [2020-10-28 12:12:22,958 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1619 transitions. Word has length 125 [2020-10-28 12:12:22,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:22,961 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1619 transitions. [2020-10-28 12:12:22,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1619 transitions. [2020-10-28 12:12:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 12:12:22,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:22,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:22,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:12:22,969 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:22,970 INFO L82 PathProgramCache]: Analyzing trace with hash 754944159, now seen corresponding path program 1 times [2020-10-28 12:12:22,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:22,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698056381] [2020-10-28 12:12:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:25,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:25,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:12:25,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:25,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2050 [2020-10-28 12:12:25,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:25,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:12:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:12:25,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:12:25,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:25,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:25,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:25,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:25,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:25,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:12:25,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:25,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:12:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:25,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:25,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:12:25,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 12:12:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:25,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:12:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:12:25,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698056381] [2020-10-28 12:12:25,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:12:25,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:12:25,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803685081] [2020-10-28 12:12:25,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:25,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:25,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:25,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:25,589 INFO L87 Difference]: Start difference. First operand 1216 states and 1619 transitions. Second operand 7 states. [2020-10-28 12:12:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:29,156 INFO L93 Difference]: Finished difference Result 3060 states and 4060 transitions. [2020-10-28 12:12:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:12:29,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-28 12:12:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:29,177 INFO L225 Difference]: With dead ends: 3060 [2020-10-28 12:12:29,177 INFO L226 Difference]: Without dead ends: 1850 [2020-10-28 12:12:29,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2020-10-28 12:12:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1817. [2020-10-28 12:12:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2020-10-28 12:12:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2291 transitions. [2020-10-28 12:12:29,262 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2291 transitions. Word has length 127 [2020-10-28 12:12:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:29,265 INFO L481 AbstractCegarLoop]: Abstraction has 1817 states and 2291 transitions. [2020-10-28 12:12:29,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2291 transitions. [2020-10-28 12:12:29,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 12:12:29,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:29,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:29,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:12:29,284 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1027253090, now seen corresponding path program 1 times [2020-10-28 12:12:29,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:29,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601024943] [2020-10-28 12:12:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:29,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 12:12:29,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-28 12:12:29,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:29,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:12:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 12:12:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:29,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:29,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:29,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:12:29,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:29,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:30,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:12:30,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:12:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:12:30,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601024943] [2020-10-28 12:12:30,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:30,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:12:30,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217524101] [2020-10-28 12:12:30,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:30,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:30,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:30,302 INFO L87 Difference]: Start difference. First operand 1817 states and 2291 transitions. Second operand 5 states. [2020-10-28 12:12:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:33,527 INFO L93 Difference]: Finished difference Result 3275 states and 4364 transitions. [2020-10-28 12:12:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:33,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-28 12:12:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:33,541 INFO L225 Difference]: With dead ends: 3275 [2020-10-28 12:12:33,541 INFO L226 Difference]: Without dead ends: 2238 [2020-10-28 12:12:33,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-10-28 12:12:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2224. [2020-10-28 12:12:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2224 states. [2020-10-28 12:12:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 2879 transitions. [2020-10-28 12:12:33,619 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 2879 transitions. Word has length 184 [2020-10-28 12:12:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:33,620 INFO L481 AbstractCegarLoop]: Abstraction has 2224 states and 2879 transitions. [2020-10-28 12:12:33,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:12:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 2879 transitions. [2020-10-28 12:12:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-28 12:12:33,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:33,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 12:12:33,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:12:33,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1684312074, now seen corresponding path program 1 times [2020-10-28 12:12:33,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:33,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071418902] [2020-10-28 12:12:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:36,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:36,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-28 12:12:36,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2464 [2020-10-28 12:12:36,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:36,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:12:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:12:36,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:36,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:36,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:36,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:12:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:36,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:36,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:36,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:36,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:12:36,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:36,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:36,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:36,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:12:36,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:36,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:12:36,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:36,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:36,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:36,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:36,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:12:36,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:12:37,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071418902] [2020-10-28 12:12:37,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:37,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:37,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841146036] [2020-10-28 12:12:37,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:37,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:37,032 INFO L87 Difference]: Start difference. First operand 2224 states and 2879 transitions. Second operand 7 states. [2020-10-28 12:12:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:40,771 INFO L93 Difference]: Finished difference Result 5456 states and 7284 transitions. [2020-10-28 12:12:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:12:40,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-28 12:12:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:40,796 INFO L225 Difference]: With dead ends: 5456 [2020-10-28 12:12:40,797 INFO L226 Difference]: Without dead ends: 3616 [2020-10-28 12:12:40,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:12:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2020-10-28 12:12:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3590. [2020-10-28 12:12:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2020-10-28 12:12:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 4443 transitions. [2020-10-28 12:12:40,919 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 4443 transitions. Word has length 243 [2020-10-28 12:12:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:40,920 INFO L481 AbstractCegarLoop]: Abstraction has 3590 states and 4443 transitions. [2020-10-28 12:12:40,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 4443 transitions. [2020-10-28 12:12:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 12:12:40,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:40,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:12:40,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:12:40,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:40,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:40,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1709731818, now seen corresponding path program 1 times [2020-10-28 12:12:40,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:40,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420020941] [2020-10-28 12:12:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:42,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:43,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:43,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 12:12:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2920 [2020-10-28 12:12:43,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:43,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:12:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:12:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:12:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:44,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:44,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:44,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:12:44,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:44,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:44,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:44,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:44,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:44,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:12:44,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:44,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:44,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:44,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:12:44,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:12:44,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:44,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:12:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:12:44,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420020941] [2020-10-28 12:12:44,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:44,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:12:44,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37309919] [2020-10-28 12:12:44,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:12:44,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:44,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:12:44,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:44,629 INFO L87 Difference]: Start difference. First operand 3590 states and 4443 transitions. Second operand 6 states. [2020-10-28 12:12:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:48,266 INFO L93 Difference]: Finished difference Result 8594 states and 11110 transitions. [2020-10-28 12:12:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:12:48,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2020-10-28 12:12:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:48,300 INFO L225 Difference]: With dead ends: 8594 [2020-10-28 12:12:48,300 INFO L226 Difference]: Without dead ends: 5388 [2020-10-28 12:12:48,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:12:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2020-10-28 12:12:48,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 5173. [2020-10-28 12:12:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5173 states. [2020-10-28 12:12:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 6626 transitions. [2020-10-28 12:12:48,481 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 6626 transitions. Word has length 249 [2020-10-28 12:12:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:48,482 INFO L481 AbstractCegarLoop]: Abstraction has 5173 states and 6626 transitions. [2020-10-28 12:12:48,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:12:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 6626 transitions. [2020-10-28 12:12:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 12:12:48,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:48,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:12:48,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:12:48,489 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:48,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2117509150, now seen corresponding path program 1 times [2020-10-28 12:12:48,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:48,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716462072] [2020-10-28 12:12:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:49,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 12:12:49,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-10-28 12:12:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:49,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:12:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 12:12:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:49,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:49,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:12:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:49,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:49,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:12:49,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:49,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:50,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:50,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:12:50,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:50,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:12:50,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:50,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:50,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:50,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:50,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:12:50,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:12:50,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716462072] [2020-10-28 12:12:50,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:50,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:12:50,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798846717] [2020-10-28 12:12:50,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:50,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:50,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:50,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:50,158 INFO L87 Difference]: Start difference. First operand 5173 states and 6626 transitions. Second operand 5 states. [2020-10-28 12:12:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:53,622 INFO L93 Difference]: Finished difference Result 11530 states and 15180 transitions. [2020-10-28 12:12:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:53,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-28 12:12:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:53,664 INFO L225 Difference]: With dead ends: 11530 [2020-10-28 12:12:53,664 INFO L226 Difference]: Without dead ends: 6741 [2020-10-28 12:12:53,678 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 [2020-10-28 12:12:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2020-10-28 12:12:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6529. [2020-10-28 12:12:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6529 states. [2020-10-28 12:12:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6529 states to 6529 states and 8358 transitions. [2020-10-28 12:12:53,867 INFO L78 Accepts]: Start accepts. Automaton has 6529 states and 8358 transitions. Word has length 253 [2020-10-28 12:12:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:53,868 INFO L481 AbstractCegarLoop]: Abstraction has 6529 states and 8358 transitions. [2020-10-28 12:12:53,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:12:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6529 states and 8358 transitions. [2020-10-28 12:12:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-28 12:12:53,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:53,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-10-28 12:12:53,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:12:53,876 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:53,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1108192419, now seen corresponding path program 1 times [2020-10-28 12:12:53,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:53,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120349725] [2020-10-28 12:12:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:55,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:55,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 12:12:55,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-28 12:12:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:55,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:12:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:12:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:55,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:55,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:55,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:12:55,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:55,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:55,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:55,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:55,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 12:12:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:55,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:12:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:55,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:12:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 12:12:56,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:56,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:12:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:12:56,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120349725] [2020-10-28 12:12:56,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:56,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:56,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527329050] [2020-10-28 12:12:56,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:56,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:56,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:56,327 INFO L87 Difference]: Start difference. First operand 6529 states and 8358 transitions. Second operand 7 states. [2020-10-28 12:12:58,375 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:12:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:59,868 INFO L93 Difference]: Finished difference Result 13917 states and 18243 transitions. [2020-10-28 12:12:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:12:59,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-28 12:12:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:59,915 INFO L225 Difference]: With dead ends: 13917 [2020-10-28 12:12:59,916 INFO L226 Difference]: Without dead ends: 7772 [2020-10-28 12:12:59,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2020-10-28 12:13:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 7735. [2020-10-28 12:13:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7735 states. [2020-10-28 12:13:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 9846 transitions. [2020-10-28 12:13:00,170 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 9846 transitions. Word has length 254 [2020-10-28 12:13:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:00,171 INFO L481 AbstractCegarLoop]: Abstraction has 7735 states and 9846 transitions. [2020-10-28 12:13:00,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 9846 transitions. [2020-10-28 12:13:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-28 12:13:00,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:00,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:13:00,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:13:00,181 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1889562130, now seen corresponding path program 1 times [2020-10-28 12:13:00,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:00,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61392578] [2020-10-28 12:13:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-28 12:13:01,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 952 [2020-10-28 12:13:01,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:13:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 12:13:01,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:01,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:13:01,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:01,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:01,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:13:01,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:01,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:01,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:01,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:13:01,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:01,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:13:01,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:01,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:13:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 12:13:01,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61392578] [2020-10-28 12:13:01,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:01,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:01,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313724423] [2020-10-28 12:13:01,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:01,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:01,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:01,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:01,746 INFO L87 Difference]: Start difference. First operand 7735 states and 9846 transitions. Second operand 5 states. [2020-10-28 12:13:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:05,306 INFO L93 Difference]: Finished difference Result 14917 states and 19078 transitions. [2020-10-28 12:13:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:05,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-28 12:13:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:05,340 INFO L225 Difference]: With dead ends: 14917 [2020-10-28 12:13:05,340 INFO L226 Difference]: Without dead ends: 7376 [2020-10-28 12:13:05,361 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 [2020-10-28 12:13:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2020-10-28 12:13:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 7335. [2020-10-28 12:13:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7335 states. [2020-10-28 12:13:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7335 states to 7335 states and 8947 transitions. [2020-10-28 12:13:05,540 INFO L78 Accepts]: Start accepts. Automaton has 7335 states and 8947 transitions. Word has length 280 [2020-10-28 12:13:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:05,541 INFO L481 AbstractCegarLoop]: Abstraction has 7335 states and 8947 transitions. [2020-10-28 12:13:05,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7335 states and 8947 transitions. [2020-10-28 12:13:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-28 12:13:05,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:05,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:05,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:13:05,558 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:05,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:05,558 INFO L82 PathProgramCache]: Analyzing trace with hash 703219245, now seen corresponding path program 1 times [2020-10-28 12:13:05,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:05,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022449398] [2020-10-28 12:13:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:08,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:08,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:13:08,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:13:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3201 [2020-10-28 12:13:08,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:08,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:13:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:13:08,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:09,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:09,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:09,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:09,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:13:09,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:09,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:09,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:09,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:09,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:09,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:13:09,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:13:09,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:09,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:13:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:09,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:09,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:13:09,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:13:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:09,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:13:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:13:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:09,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:13:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 12:13:09,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:09,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:13:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 257 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-28 12:13:09,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022449398] [2020-10-28 12:13:09,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:09,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:13:09,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483558740] [2020-10-28 12:13:09,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:13:09,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:09,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:13:09,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:09,732 INFO L87 Difference]: Start difference. First operand 7335 states and 8947 transitions. Second operand 6 states. [2020-10-28 12:13:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:12,996 INFO L93 Difference]: Finished difference Result 15539 states and 19552 transitions. [2020-10-28 12:13:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:13:12,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2020-10-28 12:13:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:13,031 INFO L225 Difference]: With dead ends: 15539 [2020-10-28 12:13:13,031 INFO L226 Difference]: Without dead ends: 9949 [2020-10-28 12:13:13,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:13,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2020-10-28 12:13:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 9908. [2020-10-28 12:13:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9908 states. [2020-10-28 12:13:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9908 states to 9908 states and 12324 transitions. [2020-10-28 12:13:13,336 INFO L78 Accepts]: Start accepts. Automaton has 9908 states and 12324 transitions. Word has length 340 [2020-10-28 12:13:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:13,337 INFO L481 AbstractCegarLoop]: Abstraction has 9908 states and 12324 transitions. [2020-10-28 12:13:13,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:13:13,337 INFO L276 IsEmpty]: Start isEmpty. Operand 9908 states and 12324 transitions. [2020-10-28 12:13:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-28 12:13:13,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:13,355 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:13,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:13:13,355 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1732020883, now seen corresponding path program 1 times [2020-10-28 12:13:13,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:13,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190367889] [2020-10-28 12:13:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:13,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:15,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:13:18,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:13:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 12:13:18,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:13:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:13:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:18,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:13:18,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:18,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:13:18,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:13:18,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:13:18,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:13:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:13:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:19,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:13:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 12:13:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:19,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:13:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 247 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 12:13:19,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190367889] [2020-10-28 12:13:19,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:19,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:13:19,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472407069] [2020-10-28 12:13:19,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:13:19,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:19,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:13:19,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:19,441 INFO L87 Difference]: Start difference. First operand 9908 states and 12324 transitions. Second operand 6 states. [2020-10-28 12:13:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:22,836 INFO L93 Difference]: Finished difference Result 19628 states and 24944 transitions. [2020-10-28 12:13:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:13:22,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2020-10-28 12:13:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:22,884 INFO L225 Difference]: With dead ends: 19628 [2020-10-28 12:13:22,884 INFO L226 Difference]: Without dead ends: 11465 [2020-10-28 12:13:22,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11465 states. [2020-10-28 12:13:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11465 to 11423. [2020-10-28 12:13:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11423 states. [2020-10-28 12:13:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11423 states to 11423 states and 14368 transitions. [2020-10-28 12:13:23,193 INFO L78 Accepts]: Start accepts. Automaton has 11423 states and 14368 transitions. Word has length 340 [2020-10-28 12:13:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:23,194 INFO L481 AbstractCegarLoop]: Abstraction has 11423 states and 14368 transitions. [2020-10-28 12:13:23,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:13:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 11423 states and 14368 transitions. [2020-10-28 12:13:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-28 12:13:23,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:23,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:23,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:13:23,219 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash 159622585, now seen corresponding path program 1 times [2020-10-28 12:13:23,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:23,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618350984] [2020-10-28 12:13:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-28 12:13:26,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2895 [2020-10-28 12:13:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:26,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:13:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:13:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:26,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:13:26,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:26,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:26,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:26,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:13:26,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:26,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:26,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:26,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:13:26,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:13:26,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:26,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:13:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:13:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:13:26,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:13:26,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:26,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:13:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:13:26,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618350984] [2020-10-28 12:13:26,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:26,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:26,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831426696] [2020-10-28 12:13:26,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:26,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:26,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:26,871 INFO L87 Difference]: Start difference. First operand 11423 states and 14368 transitions. Second operand 7 states. [2020-10-28 12:13:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:32,015 INFO L93 Difference]: Finished difference Result 24668 states and 31560 transitions. [2020-10-28 12:13:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:13:32,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-28 12:13:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:32,064 INFO L225 Difference]: With dead ends: 24668 [2020-10-28 12:13:32,064 INFO L226 Difference]: Without dead ends: 13629 [2020-10-28 12:13:32,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13629 states. [2020-10-28 12:13:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13629 to 13190. [2020-10-28 12:13:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13190 states. [2020-10-28 12:13:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13190 states to 13190 states and 16472 transitions. [2020-10-28 12:13:32,376 INFO L78 Accepts]: Start accepts. Automaton has 13190 states and 16472 transitions. Word has length 367 [2020-10-28 12:13:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:32,377 INFO L481 AbstractCegarLoop]: Abstraction has 13190 states and 16472 transitions. [2020-10-28 12:13:32,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 13190 states and 16472 transitions. [2020-10-28 12:13:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-28 12:13:32,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:32,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:13:32,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:13:32,401 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:32,402 INFO L82 PathProgramCache]: Analyzing trace with hash -865099084, now seen corresponding path program 1 times [2020-10-28 12:13:32,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:32,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794144951] [2020-10-28 12:13:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:33,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-28 12:13:34,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-10-28 12:13:34,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:13:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:13:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-28 12:13:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:13:34,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:13:34,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:13:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:13:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:13:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 12:13:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 191 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:13:35,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794144951] [2020-10-28 12:13:35,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:35,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:13:35,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986255515] [2020-10-28 12:13:35,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:13:35,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:35,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:13:35,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:35,101 INFO L87 Difference]: Start difference. First operand 13190 states and 16472 transitions. Second operand 8 states. [2020-10-28 12:13:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:40,353 INFO L93 Difference]: Finished difference Result 32939 states and 42178 transitions. [2020-10-28 12:13:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:13:40,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 366 [2020-10-28 12:13:40,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:40,421 INFO L225 Difference]: With dead ends: 32939 [2020-10-28 12:13:40,421 INFO L226 Difference]: Without dead ends: 21498 [2020-10-28 12:13:40,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:13:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21498 states. [2020-10-28 12:13:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21498 to 20878. [2020-10-28 12:13:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20878 states. [2020-10-28 12:13:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20878 states to 20878 states and 26172 transitions. [2020-10-28 12:13:41,033 INFO L78 Accepts]: Start accepts. Automaton has 20878 states and 26172 transitions. Word has length 366 [2020-10-28 12:13:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:41,034 INFO L481 AbstractCegarLoop]: Abstraction has 20878 states and 26172 transitions. [2020-10-28 12:13:41,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:13:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 20878 states and 26172 transitions. [2020-10-28 12:13:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-28 12:13:41,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:41,068 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:41,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:13:41,068 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash 739580657, now seen corresponding path program 1 times [2020-10-28 12:13:41,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:41,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775990315] [2020-10-28 12:13:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:46,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:46,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-28 12:13:46,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:13:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 12:13:46,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:46,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-28 12:13:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:13:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:46,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:46,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:46,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:46,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:46,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:13:46,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:13:46,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:46,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:13:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:46,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-28 12:13:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:46,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:46,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:13:46,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:46,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-28 12:13:46,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:46,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:46,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:46,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:46,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:13:46,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 260 proven. 46 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-28 12:13:47,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775990315] [2020-10-28 12:13:47,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:47,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:13:47,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965228220] [2020-10-28 12:13:47,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:13:47,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:47,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:13:47,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:47,190 INFO L87 Difference]: Start difference. First operand 20878 states and 26172 transitions. Second operand 6 states. [2020-10-28 12:13:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:50,830 INFO L93 Difference]: Finished difference Result 41375 states and 52045 transitions. [2020-10-28 12:13:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:13:50,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 381 [2020-10-28 12:13:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:50,887 INFO L225 Difference]: With dead ends: 41375 [2020-10-28 12:13:50,888 INFO L226 Difference]: Without dead ends: 22246 [2020-10-28 12:13:50,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22246 states. [2020-10-28 12:13:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22246 to 21634. [2020-10-28 12:13:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21634 states. [2020-10-28 12:13:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 27147 transitions. [2020-10-28 12:13:51,397 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 27147 transitions. Word has length 381 [2020-10-28 12:13:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:51,398 INFO L481 AbstractCegarLoop]: Abstraction has 21634 states and 27147 transitions. [2020-10-28 12:13:51,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:13:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 27147 transitions. [2020-10-28 12:13:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-28 12:13:51,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:51,427 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:51,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:13:51,428 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:51,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1696459664, now seen corresponding path program 1 times [2020-10-28 12:13:51,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:51,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233461760] [2020-10-28 12:13:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-28 12:13:56,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:13:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 12:13:56,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-28 12:13:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 12:13:56,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:56,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:56,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:13:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:13:56,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:13:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-28 12:13:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:13:56,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:13:56,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:13:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-28 12:13:57,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233461760] [2020-10-28 12:13:57,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:57,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:57,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677384678] [2020-10-28 12:13:57,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:57,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:57,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:57,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:57,098 INFO L87 Difference]: Start difference. First operand 21634 states and 27147 transitions. Second operand 5 states. [2020-10-28 12:14:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:00,406 INFO L93 Difference]: Finished difference Result 43446 states and 55122 transitions. [2020-10-28 12:14:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:14:00,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 384 [2020-10-28 12:14:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:00,454 INFO L225 Difference]: With dead ends: 43446 [2020-10-28 12:14:00,454 INFO L226 Difference]: Without dead ends: 23561 [2020-10-28 12:14:00,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:14:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23561 states. [2020-10-28 12:14:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23561 to 23523. [2020-10-28 12:14:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23523 states. [2020-10-28 12:14:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23523 states to 23523 states and 29271 transitions. [2020-10-28 12:14:00,967 INFO L78 Accepts]: Start accepts. Automaton has 23523 states and 29271 transitions. Word has length 384 [2020-10-28 12:14:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:00,968 INFO L481 AbstractCegarLoop]: Abstraction has 23523 states and 29271 transitions. [2020-10-28 12:14:00,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:14:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 23523 states and 29271 transitions. [2020-10-28 12:14:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-28 12:14:01,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:01,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:01,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:14:01,018 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:01,018 INFO L82 PathProgramCache]: Analyzing trace with hash -303886817, now seen corresponding path program 1 times [2020-10-28 12:14:01,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:01,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352811124] [2020-10-28 12:14:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:03,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:05,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-28 12:14:05,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:05,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4245 [2020-10-28 12:14:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:05,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:14:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:14:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:05,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:14:05,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:05,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:14:05,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:14:05,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:05,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:14:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:14:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:05,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:14:05,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:14:05,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:05,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:14:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-28 12:14:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:06,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:06,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:14:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:14:06,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:06,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:14:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 245 proven. 108 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:14:06,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352811124] [2020-10-28 12:14:06,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:06,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:06,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563741481] [2020-10-28 12:14:06,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:06,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:06,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:06,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:06,575 INFO L87 Difference]: Start difference. First operand 23523 states and 29271 transitions. Second operand 7 states. [2020-10-28 12:14:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:10,272 INFO L93 Difference]: Finished difference Result 49184 states and 61342 transitions. [2020-10-28 12:14:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:14:10,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-28 12:14:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:10,345 INFO L225 Difference]: With dead ends: 49184 [2020-10-28 12:14:10,346 INFO L226 Difference]: Without dead ends: 26045 [2020-10-28 12:14:10,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26045 states. [2020-10-28 12:14:10,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26045 to 25615. [2020-10-28 12:14:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25615 states. [2020-10-28 12:14:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25615 states to 25615 states and 31754 transitions. [2020-10-28 12:14:11,162 INFO L78 Accepts]: Start accepts. Automaton has 25615 states and 31754 transitions. Word has length 454 [2020-10-28 12:14:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:11,163 INFO L481 AbstractCegarLoop]: Abstraction has 25615 states and 31754 transitions. [2020-10-28 12:14:11,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 25615 states and 31754 transitions. [2020-10-28 12:14:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-28 12:14:11,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:11,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:11,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:14:11,199 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash 153379186, now seen corresponding path program 1 times [2020-10-28 12:14:11,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:11,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799714334] [2020-10-28 12:14:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-28 12:14:14,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2904 [2020-10-28 12:14:14,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:14:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:14:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:14:14,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:14,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:14:14,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:14:14,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:14,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:14:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:14:14,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 12:14:14,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:14:14,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-28 12:14:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:14,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 245 proven. 108 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-28 12:14:15,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799714334] [2020-10-28 12:14:15,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:15,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:15,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123139729] [2020-10-28 12:14:15,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:15,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:15,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:15,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:15,220 INFO L87 Difference]: Start difference. First operand 25615 states and 31754 transitions. Second operand 7 states. [2020-10-28 12:14:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:18,828 INFO L93 Difference]: Finished difference Result 49766 states and 61928 transitions. [2020-10-28 12:14:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:14:18,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-28 12:14:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:18,882 INFO L225 Difference]: With dead ends: 49766 [2020-10-28 12:14:18,882 INFO L226 Difference]: Without dead ends: 26472 [2020-10-28 12:14:18,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26472 states. [2020-10-28 12:14:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26472 to 26201. [2020-10-28 12:14:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26201 states. [2020-10-28 12:14:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26201 states to 26201 states and 32461 transitions. [2020-10-28 12:14:19,500 INFO L78 Accepts]: Start accepts. Automaton has 26201 states and 32461 transitions. Word has length 459 [2020-10-28 12:14:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:19,501 INFO L481 AbstractCegarLoop]: Abstraction has 26201 states and 32461 transitions. [2020-10-28 12:14:19,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 26201 states and 32461 transitions. [2020-10-28 12:14:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-28 12:14:19,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:19,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:14:19,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:14:19,543 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:19,544 INFO L82 PathProgramCache]: Analyzing trace with hash -690958659, now seen corresponding path program 1 times [2020-10-28 12:14:19,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:19,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209031382] [2020-10-28 12:14:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:22,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-28 12:14:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3226 [2020-10-28 12:14:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:22,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:14:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:14:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:23,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:14:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:23,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:23,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:23,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:14:23,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:14:23,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:23,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:14:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:14:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:23,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:23,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:14:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:23,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-28 12:14:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:14:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 245 proven. 108 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-28 12:14:23,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209031382] [2020-10-28 12:14:23,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:23,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:23,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678894605] [2020-10-28 12:14:23,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:23,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:23,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:23,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:23,703 INFO L87 Difference]: Start difference. First operand 26201 states and 32461 transitions. Second operand 7 states. [2020-10-28 12:14:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:27,997 INFO L93 Difference]: Finished difference Result 54395 states and 67392 transitions. [2020-10-28 12:14:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:14:27,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-28 12:14:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:28,059 INFO L225 Difference]: With dead ends: 54395 [2020-10-28 12:14:28,059 INFO L226 Difference]: Without dead ends: 28578 [2020-10-28 12:14:28,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28578 states. [2020-10-28 12:14:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28578 to 28495. [2020-10-28 12:14:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28495 states. [2020-10-28 12:14:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28495 states to 28495 states and 35034 transitions. [2020-10-28 12:14:28,651 INFO L78 Accepts]: Start accepts. Automaton has 28495 states and 35034 transitions. Word has length 475 [2020-10-28 12:14:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:28,652 INFO L481 AbstractCegarLoop]: Abstraction has 28495 states and 35034 transitions. [2020-10-28 12:14:28,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 28495 states and 35034 transitions. [2020-10-28 12:14:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2020-10-28 12:14:28,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:28,703 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 12:14:28,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:14:28,704 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash 807546479, now seen corresponding path program 1 times [2020-10-28 12:14:28,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:28,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018285323] [2020-10-28 12:14:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:31,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:33,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:14:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:14:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:34,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:34,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:14:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:34,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:14:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:34,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:14:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:14:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:14:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:14:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:34,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:14:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-28 12:14:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:34,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:34,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:14:34,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:34,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:14:34,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:34,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:14:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:34,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 365 proven. 108 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-28 12:14:34,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018285323] [2020-10-28 12:14:34,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:34,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:34,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34068399] [2020-10-28 12:14:34,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:34,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:34,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:34,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:34,648 INFO L87 Difference]: Start difference. First operand 28495 states and 35034 transitions. Second operand 7 states. [2020-10-28 12:14:40,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:40,087 INFO L93 Difference]: Finished difference Result 56667 states and 69939 transitions. [2020-10-28 12:14:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:14:40,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 528 [2020-10-28 12:14:40,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:40,151 INFO L225 Difference]: With dead ends: 56667 [2020-10-28 12:14:40,151 INFO L226 Difference]: Without dead ends: 30877 [2020-10-28 12:14:40,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30877 states. [2020-10-28 12:14:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30877 to 29282. [2020-10-28 12:14:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29282 states. [2020-10-28 12:14:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29282 states to 29282 states and 35855 transitions. [2020-10-28 12:14:40,846 INFO L78 Accepts]: Start accepts. Automaton has 29282 states and 35855 transitions. Word has length 528 [2020-10-28 12:14:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:40,847 INFO L481 AbstractCegarLoop]: Abstraction has 29282 states and 35855 transitions. [2020-10-28 12:14:40,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 29282 states and 35855 transitions. [2020-10-28 12:14:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-28 12:14:40,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:40,913 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:14:40,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:14:40,913 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:40,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:40,914 INFO L82 PathProgramCache]: Analyzing trace with hash 310535654, now seen corresponding path program 1 times [2020-10-28 12:14:40,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:40,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339054322] [2020-10-28 12:14:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:45,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:45,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-28 12:14:45,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4338 [2020-10-28 12:14:45,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:45,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-28 12:14:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:14:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:45,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:45,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:45,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:45,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:14:45,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:45,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:45,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:45,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:14:45,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:14:45,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:45,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:14:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:45,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:14:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 12:14:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:45,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:45,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:14:45,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:45,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:14:45,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:45,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:14:45,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 12:14:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:46,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:46,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:14:46,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 12:14:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:46,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:14:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 385 proven. 108 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-28 12:14:46,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339054322] [2020-10-28 12:14:46,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:46,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:46,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470281272] [2020-10-28 12:14:46,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:46,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:46,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:46,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:46,366 INFO L87 Difference]: Start difference. First operand 29282 states and 35855 transitions. Second operand 7 states. [2020-10-28 12:14:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:50,382 INFO L93 Difference]: Finished difference Result 55947 states and 68732 transitions. [2020-10-28 12:14:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:14:50,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 533 [2020-10-28 12:14:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:50,441 INFO L225 Difference]: With dead ends: 55947 [2020-10-28 12:14:50,442 INFO L226 Difference]: Without dead ends: 29370 [2020-10-28 12:14:50,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29370 states. [2020-10-28 12:14:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29370 to 28914. [2020-10-28 12:14:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28914 states. [2020-10-28 12:14:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28914 states to 28914 states and 35399 transitions. [2020-10-28 12:14:51,009 INFO L78 Accepts]: Start accepts. Automaton has 28914 states and 35399 transitions. Word has length 533 [2020-10-28 12:14:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:51,010 INFO L481 AbstractCegarLoop]: Abstraction has 28914 states and 35399 transitions. [2020-10-28 12:14:51,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 28914 states and 35399 transitions. [2020-10-28 12:14:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-28 12:14:51,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:51,065 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:51,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:14:51,065 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:51,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:51,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1972471231, now seen corresponding path program 1 times [2020-10-28 12:14:51,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:51,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587323036] [2020-10-28 12:14:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-28 12:14:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:14:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 12:14:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:56,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:14:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:56,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:56,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:14:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-28 12:14:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:14:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:14:56,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:56,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 12:14:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:56,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-28 12:14:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:56,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:56,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:14:56,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:14:56,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:56,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:14:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 180 proven. 6 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2020-10-28 12:14:56,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587323036] [2020-10-28 12:14:56,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:56,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:14:56,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913687775] [2020-10-28 12:14:56,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:14:56,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:56,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:14:56,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:14:56,956 INFO L87 Difference]: Start difference. First operand 28914 states and 35399 transitions. Second operand 5 states. [2020-10-28 12:15:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:00,439 INFO L93 Difference]: Finished difference Result 52738 states and 64704 transitions. [2020-10-28 12:15:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:15:00,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 539 [2020-10-28 12:15:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:00,482 INFO L225 Difference]: With dead ends: 52738 [2020-10-28 12:15:00,483 INFO L226 Difference]: Without dead ends: 23046 [2020-10-28 12:15:00,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:15:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23046 states. [2020-10-28 12:15:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23046 to 22790. [2020-10-28 12:15:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22790 states. [2020-10-28 12:15:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22790 states to 22790 states and 26108 transitions. [2020-10-28 12:15:01,108 INFO L78 Accepts]: Start accepts. Automaton has 22790 states and 26108 transitions. Word has length 539 [2020-10-28 12:15:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:01,109 INFO L481 AbstractCegarLoop]: Abstraction has 22790 states and 26108 transitions. [2020-10-28 12:15:01,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:15:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 22790 states and 26108 transitions. [2020-10-28 12:15:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-28 12:15:01,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:01,149 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:15:01,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:15:01,149 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash -663185277, now seen corresponding path program 1 times [2020-10-28 12:15:01,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:01,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763703404] [2020-10-28 12:15:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:01,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:06,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4744 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:15:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:06,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:06,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:06,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:15:06,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:06,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:06,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:15:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:15:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-28 12:15:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:06,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:06,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:15:06,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:15:06,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:06,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:15:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-28 12:15:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:06,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:06,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:15:06,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:15:06,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:06,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:15:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 387 proven. 108 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-28 12:15:07,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763703404] [2020-10-28 12:15:07,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:07,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:15:07,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614745931] [2020-10-28 12:15:07,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:07,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:07,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:07,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:07,193 INFO L87 Difference]: Start difference. First operand 22790 states and 26108 transitions. Second operand 7 states. [2020-10-28 12:15:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:11,504 INFO L93 Difference]: Finished difference Result 43326 states and 49627 transitions. [2020-10-28 12:15:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:15:11,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 550 [2020-10-28 12:15:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:11,549 INFO L225 Difference]: With dead ends: 43326 [2020-10-28 12:15:11,549 INFO L226 Difference]: Without dead ends: 21898 [2020-10-28 12:15:11,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:15:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21898 states. [2020-10-28 12:15:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21898 to 21832. [2020-10-28 12:15:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21832 states. [2020-10-28 12:15:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21832 states to 21832 states and 24948 transitions. [2020-10-28 12:15:11,885 INFO L78 Accepts]: Start accepts. Automaton has 21832 states and 24948 transitions. Word has length 550 [2020-10-28 12:15:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:11,885 INFO L481 AbstractCegarLoop]: Abstraction has 21832 states and 24948 transitions. [2020-10-28 12:15:11,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 21832 states and 24948 transitions. [2020-10-28 12:15:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-28 12:15:11,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:11,918 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:15:11,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:15:11,918 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:11,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1249884354, now seen corresponding path program 1 times [2020-10-28 12:15:11,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:11,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475314183] [2020-10-28 12:15:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:12,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:12,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4546 [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:15:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:16,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:16,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:16,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:15:16,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:16,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:16,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:16,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:15:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:15:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:16,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:17,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:15:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:15:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 397 proven. 108 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-28 12:15:17,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475314183] [2020-10-28 12:15:17,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:17,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:15:17,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451058084] [2020-10-28 12:15:17,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:17,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:17,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:17,770 INFO L87 Difference]: Start difference. First operand 21832 states and 24948 transitions. Second operand 7 states. [2020-10-28 12:15:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:21,832 INFO L93 Difference]: Finished difference Result 41242 states and 47189 transitions. [2020-10-28 12:15:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:15:21,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 555 [2020-10-28 12:15:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:21,888 INFO L225 Difference]: With dead ends: 41242 [2020-10-28 12:15:21,889 INFO L226 Difference]: Without dead ends: 21538 [2020-10-28 12:15:21,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:15:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21538 states. [2020-10-28 12:15:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21538 to 21452. [2020-10-28 12:15:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21452 states. [2020-10-28 12:15:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21452 states to 21452 states and 24456 transitions. [2020-10-28 12:15:22,238 INFO L78 Accepts]: Start accepts. Automaton has 21452 states and 24456 transitions. Word has length 555 [2020-10-28 12:15:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:22,238 INFO L481 AbstractCegarLoop]: Abstraction has 21452 states and 24456 transitions. [2020-10-28 12:15:22,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 21452 states and 24456 transitions. [2020-10-28 12:15:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-28 12:15:22,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:22,264 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:15:22,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:15:22,265 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:22,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1244361690, now seen corresponding path program 1 times [2020-10-28 12:15:22,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:22,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119798975] [2020-10-28 12:15:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking...