/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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:08:59,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:08:59,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:08:59,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:08:59,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:08:59,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:08:59,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:08:59,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:08:59,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:08:59,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:08:59,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:08:59,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:08:59,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:08:59,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:08:59,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:08:59,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:08:59,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:08:59,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:08:59,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:08:59,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:08:59,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:08:59,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:08:59,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:08:59,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:08:59,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:08:59,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:08:59,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:08:59,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:08:59,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:08:59,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:08:59,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:08:59,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:08:59,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:08:59,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:08:59,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:08:59,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:08:59,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:08:59,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:08:59,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:08:59,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:08:59,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:08:59,732 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 12:08:59,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:08:59,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:08:59,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:08:59,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:08:59,812 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:08:59,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:08:59,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:08:59,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:08:59,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:08:59,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:08:59,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:08:59,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:08:59,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:08:59,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:08:59,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:08:59,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:08:59,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:08:59,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:08:59,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:08:59,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:08:59,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:08:59,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:08:59,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:08:59,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:08:59,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:08:59,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:08:59,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:08:59,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:08:59,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:08:59,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:09:00,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:09:00,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:09:00,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:09:00,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:09:00,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:09:00,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41.c [2020-10-28 12:09:00,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d19687be/397bf46e30be4600a50e259d58e1f97f/FLAG910b160ba [2020-10-28 12:09:01,364 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:09:01,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label41.c [2020-10-28 12:09:01,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d19687be/397bf46e30be4600a50e259d58e1f97f/FLAG910b160ba [2020-10-28 12:09:01,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d19687be/397bf46e30be4600a50e259d58e1f97f [2020-10-28 12:09:01,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:09:01,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:09:01,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:09:01,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:09:01,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:09:01,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:09:01" (1/1) ... [2020-10-28 12:09:01,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454b9d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:01, skipping insertion in model container [2020-10-28 12:09:01,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:09:01" (1/1) ... [2020-10-28 12:09:01,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:09:01,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:09:02,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:09:02,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:09:02,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:09:02,632 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:09:02,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02 WrapperNode [2020-10-28 12:09:02,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:09:02,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:09:02,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:09:02,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:09:02,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (1/1) ... [2020-10-28 12:09:02,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (1/1) ... [2020-10-28 12:09:02,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (1/1) ... [2020-10-28 12:09:02,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (1/1) ... [2020-10-28 12:09:02,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (1/1) ... [2020-10-28 12:09:02,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (1/1) ... [2020-10-28 12:09:02,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (1/1) ... [2020-10-28 12:09:02,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:09:02,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:09:02,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:09:02,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:09:02,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (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 12:09:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:09:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:09:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:09:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:09:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:09:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:09:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:09:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:09:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:09:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:09:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:09:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:09:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:09:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:09:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:09:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:09:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:09:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:09:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:09:04,869 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:09:04,869 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:09:04,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:09:04 BoogieIcfgContainer [2020-10-28 12:09:04,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:09:04,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:09:04,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:09:04,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:09:04,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:09:01" (1/3) ... [2020-10-28 12:09:04,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31f4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:09:04, skipping insertion in model container [2020-10-28 12:09:04,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:02" (2/3) ... [2020-10-28 12:09:04,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31f4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:09:04, skipping insertion in model container [2020-10-28 12:09:04,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:09:04" (3/3) ... [2020-10-28 12:09:04,882 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label41.c [2020-10-28 12:09:04,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:09:04,902 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:09:04,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:09:04,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:09:04,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:09:04,951 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:09:04,951 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:09:04,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:09:04,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:09:04,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:09:04,952 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:09:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:09:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 12:09:04,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:04,990 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] [2020-10-28 12:09:04,991 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:04,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1247400880, now seen corresponding path program 1 times [2020-10-28 12:09:05,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:05,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466073530] [2020-10-28 12:09:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:05,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:05,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 12:09:05,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-28 12:09:05,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:05,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:09:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 12:09:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:09:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:06,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:09:06,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:06,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:09:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:06,097 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 12:09:06,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466073530] [2020-10-28 12:09:06,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:09:06,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:09:06,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976906205] [2020-10-28 12:09:06,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:09:06,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:06,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:09:06,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:09:06,129 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-28 12:09:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:10,813 INFO L93 Difference]: Finished difference Result 1004 states and 1801 transitions. [2020-10-28 12:09:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:09:10,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-28 12:09:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:10,850 INFO L225 Difference]: With dead ends: 1004 [2020-10-28 12:09:10,851 INFO L226 Difference]: Without dead ends: 640 [2020-10-28 12:09:10,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-28 12:09:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 622. [2020-10-28 12:09:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-28 12:09:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 957 transitions. [2020-10-28 12:09:10,991 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 957 transitions. Word has length 28 [2020-10-28 12:09:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:10,992 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 957 transitions. [2020-10-28 12:09:10,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:09:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 957 transitions. [2020-10-28 12:09:10,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 12:09:10,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:10,998 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:09:10,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:09:10,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:11,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1862497384, now seen corresponding path program 1 times [2020-10-28 12:09:11,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:11,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370781376] [2020-10-28 12:09:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:13,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:09:13,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:09:13,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2268 [2020-10-28 12:09:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:13,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:09:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:09:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:13,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:13,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:13,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:09:13,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:13,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:09:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:13,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:09:13,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:13,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 12:09:13,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:13,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:09:13,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:09:13,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370781376] [2020-10-28 12:09:13,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:09:13,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:09:13,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905206572] [2020-10-28 12:09:13,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:13,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:13,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:13,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:13,984 INFO L87 Difference]: Start difference. First operand 622 states and 957 transitions. Second operand 7 states. [2020-10-28 12:09:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:17,666 INFO L93 Difference]: Finished difference Result 1837 states and 2871 transitions. [2020-10-28 12:09:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:17,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-28 12:09:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:17,677 INFO L225 Difference]: With dead ends: 1837 [2020-10-28 12:09:17,678 INFO L226 Difference]: Without dead ends: 1221 [2020-10-28 12:09:17,681 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 12:09:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-10-28 12:09:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1010. [2020-10-28 12:09:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-28 12:09:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1374 transitions. [2020-10-28 12:09:17,778 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1374 transitions. Word has length 102 [2020-10-28 12:09:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:17,779 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1374 transitions. [2020-10-28 12:09:17,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1374 transitions. [2020-10-28 12:09:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 12:09:17,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:17,797 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:17,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:09:17,801 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:17,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:17,802 INFO L82 PathProgramCache]: Analyzing trace with hash -130925538, now seen corresponding path program 1 times [2020-10-28 12:09:17,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:17,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980567480] [2020-10-28 12:09:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:20,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 12:09:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:09:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2581 [2020-10-28 12:09:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:20,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:09:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:09:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:20,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:09:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:20,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:20,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:20,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:20,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:20,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:09:20,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:20,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:09:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:21,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:21,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:09:21,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:21,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:09:21,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:21,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:21,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:21,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:09:21,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:09:21,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980567480] [2020-10-28 12:09:21,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:21,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:21,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788821541] [2020-10-28 12:09:21,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:21,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:21,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:21,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:21,356 INFO L87 Difference]: Start difference. First operand 1010 states and 1374 transitions. Second operand 7 states. [2020-10-28 12:09:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:25,147 INFO L93 Difference]: Finished difference Result 2618 states and 3754 transitions. [2020-10-28 12:09:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:25,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-28 12:09:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:25,160 INFO L225 Difference]: With dead ends: 2618 [2020-10-28 12:09:25,160 INFO L226 Difference]: Without dead ends: 1802 [2020-10-28 12:09:25,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 12:09:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-10-28 12:09:25,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1408. [2020-10-28 12:09:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2020-10-28 12:09:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1836 transitions. [2020-10-28 12:09:25,222 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1836 transitions. Word has length 218 [2020-10-28 12:09:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:25,223 INFO L481 AbstractCegarLoop]: Abstraction has 1408 states and 1836 transitions. [2020-10-28 12:09:25,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1836 transitions. [2020-10-28 12:09:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 12:09:25,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:25,228 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:25,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:09:25,229 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1915624694, now seen corresponding path program 1 times [2020-10-28 12:09:25,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:25,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953078833] [2020-10-28 12:09:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:25,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:25,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 12:09:26,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-28 12:09:26,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:26,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:09:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 12:09:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:26,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:26,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:09:26,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:26,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:26,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:26,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:09:26,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:26,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:26,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:09:26,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:26,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:09:26,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:26,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:09:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:09:26,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953078833] [2020-10-28 12:09:26,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:26,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:09:26,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948809561] [2020-10-28 12:09:26,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:09:26,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:09:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:09:26,958 INFO L87 Difference]: Start difference. First operand 1408 states and 1836 transitions. Second operand 5 states. [2020-10-28 12:09:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:30,293 INFO L93 Difference]: Finished difference Result 3209 states and 4324 transitions. [2020-10-28 12:09:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:09:30,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-28 12:09:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:30,308 INFO L225 Difference]: With dead ends: 3209 [2020-10-28 12:09:30,308 INFO L226 Difference]: Without dead ends: 1807 [2020-10-28 12:09:30,312 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 12:09:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2020-10-28 12:09:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1797. [2020-10-28 12:09:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2020-10-28 12:09:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2301 transitions. [2020-10-28 12:09:30,387 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2301 transitions. Word has length 228 [2020-10-28 12:09:30,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:30,390 INFO L481 AbstractCegarLoop]: Abstraction has 1797 states and 2301 transitions. [2020-10-28 12:09:30,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:09:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2301 transitions. [2020-10-28 12:09:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 12:09:30,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:30,396 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:30,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:09:30,397 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:30,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:30,397 INFO L82 PathProgramCache]: Analyzing trace with hash -267395190, now seen corresponding path program 1 times [2020-10-28 12:09:30,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:30,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511664931] [2020-10-28 12:09:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:30,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 12:09:32,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:09:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2073 [2020-10-28 12:09:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:09:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:09:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:32,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:09:32,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:32,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:32,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:09:32,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:09:32,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:32,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:09:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:32,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:09:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:33,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:33,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:09:33,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:09:33,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:33,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:09:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:09:33,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511664931] [2020-10-28 12:09:33,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:33,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:33,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106938232] [2020-10-28 12:09:33,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:33,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:33,242 INFO L87 Difference]: Start difference. First operand 1797 states and 2301 transitions. Second operand 7 states. [2020-10-28 12:09:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:37,909 INFO L93 Difference]: Finished difference Result 4417 states and 5916 transitions. [2020-10-28 12:09:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:37,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-28 12:09:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:37,925 INFO L225 Difference]: With dead ends: 4417 [2020-10-28 12:09:37,926 INFO L226 Difference]: Without dead ends: 2626 [2020-10-28 12:09:37,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 12:09:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2020-10-28 12:09:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2407. [2020-10-28 12:09:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2407 states. [2020-10-28 12:09:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 3051 transitions. [2020-10-28 12:09:38,017 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 3051 transitions. Word has length 228 [2020-10-28 12:09:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:38,018 INFO L481 AbstractCegarLoop]: Abstraction has 2407 states and 3051 transitions. [2020-10-28 12:09:38,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 3051 transitions. [2020-10-28 12:09:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 12:09:38,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:38,024 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:38,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:09:38,025 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:38,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1123321686, now seen corresponding path program 1 times [2020-10-28 12:09:38,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:38,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330395376] [2020-10-28 12:09:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:42,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:42,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 12:09:42,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:09:42,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-10-28 12:09:42,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:42,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:09:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:09:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:42,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:42,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:42,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:09:42,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:42,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:42,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:42,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:42,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:42,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:09:42,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 12:09:42,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:42,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:09:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:42,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:09:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:09:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 12:09:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:42,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:09:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 100 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:09:43,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330395376] [2020-10-28 12:09:43,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:43,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:43,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726740308] [2020-10-28 12:09:43,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:43,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:43,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:43,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:43,097 INFO L87 Difference]: Start difference. First operand 2407 states and 3051 transitions. Second operand 7 states. [2020-10-28 12:09:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:46,751 INFO L93 Difference]: Finished difference Result 6429 states and 8758 transitions. [2020-10-28 12:09:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:09:46,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-28 12:09:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:46,780 INFO L225 Difference]: With dead ends: 6429 [2020-10-28 12:09:46,780 INFO L226 Difference]: Without dead ends: 4028 [2020-10-28 12:09:46,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2020-10-28 12:09:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 3389. [2020-10-28 12:09:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-28 12:09:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 4272 transitions. [2020-10-28 12:09:46,928 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 4272 transitions. Word has length 260 [2020-10-28 12:09:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:46,929 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 4272 transitions. [2020-10-28 12:09:46,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 4272 transitions. [2020-10-28 12:09:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 12:09:46,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:46,940 INFO L422 BasicCegarLoop]: trace histogram [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, 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 12:09:46,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:09:46,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:46,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1195825166, now seen corresponding path program 1 times [2020-10-28 12:09:46,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:46,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509596148] [2020-10-28 12:09:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:52,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:52,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 12:09:52,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 12:09:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 12:09:52,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:52,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:09:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 12:09:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:09:52,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:52,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:09:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:52,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:52,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:09:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 12:09:52,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:52,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:09:52,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:09:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:52,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:09:52,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:09:52,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:52,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:09:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 12:09:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:52,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:52,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:09:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:09:52,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:52,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:09:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 292 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 12:09:52,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509596148] [2020-10-28 12:09:52,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:52,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:09:52,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897440476] [2020-10-28 12:09:52,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:09:52,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:52,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:09:52,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:09:52,945 INFO L87 Difference]: Start difference. First operand 3389 states and 4272 transitions. Second operand 8 states. [2020-10-28 12:09:57,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:57,951 INFO L93 Difference]: Finished difference Result 8396 states and 11307 transitions. [2020-10-28 12:09:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:09:57,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 309 [2020-10-28 12:09:57,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:57,987 INFO L225 Difference]: With dead ends: 8396 [2020-10-28 12:09:57,987 INFO L226 Difference]: Without dead ends: 5013 [2020-10-28 12:09:58,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:09:58,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-10-28 12:09:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 4773. [2020-10-28 12:09:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4773 states. [2020-10-28 12:09:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 6195 transitions. [2020-10-28 12:09:58,175 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 6195 transitions. Word has length 309 [2020-10-28 12:09:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:58,176 INFO L481 AbstractCegarLoop]: Abstraction has 4773 states and 6195 transitions. [2020-10-28 12:09:58,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:09:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 6195 transitions. [2020-10-28 12:09:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-28 12:09:58,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:58,189 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:09:58,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:09:58,189 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash -201707021, now seen corresponding path program 1 times [2020-10-28 12:09:58,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:58,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936749668] [2020-10-28 12:09:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:58,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:03,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:03,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-28 12:10:03,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 12:10:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 12:10:03,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:03,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:10:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:03,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:03,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:03,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:03,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:03,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:10:03,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:03,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:03,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:03,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:03,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:10:03,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:10:03,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:03,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:10:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:03,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:10:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:03,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:03,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:10:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 12:10:03,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:03,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:10:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-28 12:10:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:03,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:03,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:10:03,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:03,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 12:10:03,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:03,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 12:10:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-28 12:10:04,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936749668] [2020-10-28 12:10:04,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:04,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:10:04,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054201721] [2020-10-28 12:10:04,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:10:04,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:04,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:10:04,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:10:04,035 INFO L87 Difference]: Start difference. First operand 4773 states and 6195 transitions. Second operand 5 states. [2020-10-28 12:10:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:06,885 INFO L93 Difference]: Finished difference Result 10873 states and 14698 transitions. [2020-10-28 12:10:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:10:06,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-28 12:10:06,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:06,920 INFO L225 Difference]: With dead ends: 10873 [2020-10-28 12:10:06,920 INFO L226 Difference]: Without dead ends: 6106 [2020-10-28 12:10:06,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:10:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2020-10-28 12:10:07,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 5336. [2020-10-28 12:10:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5336 states. [2020-10-28 12:10:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 6955 transitions. [2020-10-28 12:10:07,160 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 6955 transitions. Word has length 324 [2020-10-28 12:10:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:07,160 INFO L481 AbstractCegarLoop]: Abstraction has 5336 states and 6955 transitions. [2020-10-28 12:10:07,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:10:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 6955 transitions. [2020-10-28 12:10:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 12:10:07,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:07,172 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:10:07,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:10:07,172 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:07,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:07,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2029089170, now seen corresponding path program 1 times [2020-10-28 12:10:07,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:07,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725421776] [2020-10-28 12:10:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-28 12:10:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2612 [2020-10-28 12:10:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:09,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:10:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:10:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:10,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:10,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:10,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:10:10,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:10,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:10,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:10,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:10,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:10:10,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:10:10,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:10,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:10:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:10,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:10,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:10:10,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:10:10,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:10,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:10:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:10,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:10:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:10,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:10:10,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:10:10,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:10,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:10:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 206 proven. 21 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:10:10,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725421776] [2020-10-28 12:10:10,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:10,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:10:10,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254641251] [2020-10-28 12:10:10,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:10:10,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:10,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:10:10,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:10:10,578 INFO L87 Difference]: Start difference. First operand 5336 states and 6955 transitions. Second operand 6 states. [2020-10-28 12:10:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:13,606 INFO L93 Difference]: Finished difference Result 10730 states and 14232 transitions. [2020-10-28 12:10:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:10:13,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 325 [2020-10-28 12:10:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:13,648 INFO L225 Difference]: With dead ends: 10730 [2020-10-28 12:10:13,648 INFO L226 Difference]: Without dead ends: 5400 [2020-10-28 12:10:13,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 12:10:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5400 states. [2020-10-28 12:10:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5400 to 5330. [2020-10-28 12:10:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5330 states. [2020-10-28 12:10:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 6600 transitions. [2020-10-28 12:10:13,873 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 6600 transitions. Word has length 325 [2020-10-28 12:10:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:13,874 INFO L481 AbstractCegarLoop]: Abstraction has 5330 states and 6600 transitions. [2020-10-28 12:10:13,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:10:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 6600 transitions. [2020-10-28 12:10:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-28 12:10:13,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:13,885 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:10:13,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:10:13,886 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:13,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:13,886 INFO L82 PathProgramCache]: Analyzing trace with hash -47127318, now seen corresponding path program 1 times [2020-10-28 12:10:13,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:13,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129596767] [2020-10-28 12:10:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:15,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-28 12:10:15,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-28 12:10:15,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:15,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:10:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:10:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:15,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:15,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:10:15,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:15,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:15,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:15,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:16,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:16,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:10:16,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:10:16,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:16,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:16,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:10:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:16,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:16,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:10:16,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:16,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:10:16,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:16,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:10:16,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:10:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:16,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:16,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:10:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:10:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:16,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:10:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:10:16,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129596767] [2020-10-28 12:10:16,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:16,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:16,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451099837] [2020-10-28 12:10:16,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:16,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:16,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:16,585 INFO L87 Difference]: Start difference. First operand 5330 states and 6600 transitions. Second operand 7 states. [2020-10-28 12:10:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:20,265 INFO L93 Difference]: Finished difference Result 11640 states and 14701 transitions. [2020-10-28 12:10:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:10:20,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-28 12:10:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:20,293 INFO L225 Difference]: With dead ends: 11640 [2020-10-28 12:10:20,293 INFO L226 Difference]: Without dead ends: 6316 [2020-10-28 12:10:20,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 12:10:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6316 states. [2020-10-28 12:10:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6316 to 6104. [2020-10-28 12:10:20,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6104 states. [2020-10-28 12:10:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 7557 transitions. [2020-10-28 12:10:20,451 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 7557 transitions. Word has length 330 [2020-10-28 12:10:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:20,452 INFO L481 AbstractCegarLoop]: Abstraction has 6104 states and 7557 transitions. [2020-10-28 12:10:20,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 7557 transitions. [2020-10-28 12:10:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-28 12:10:20,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:20,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-28 12:10:20,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:10:20,466 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:20,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:20,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2038217997, now seen corresponding path program 1 times [2020-10-28 12:10:20,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:20,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155409448] [2020-10-28 12:10:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:21,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:22,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 12:10:24,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 12:10:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3745 [2020-10-28 12:10:24,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:24,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:10:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 335 [2020-10-28 12:10:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:24,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:24,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:24,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:10:24,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:24,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:24,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:24,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:24,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:24,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:24,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:24,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:10:24,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:10:24,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:24,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:10:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:10:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:10:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:10:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:24,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:10:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:10:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:10:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:10:24,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:24,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 12:10:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:10:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-28 12:10:25,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155409448] [2020-10-28 12:10:25,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:10:25,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:10:25,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393838897] [2020-10-28 12:10:25,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:10:25,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:25,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:10:25,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:10:25,073 INFO L87 Difference]: Start difference. First operand 6104 states and 7557 transitions. Second operand 6 states. [2020-10-28 12:10:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:27,152 INFO L93 Difference]: Finished difference Result 12201 states and 15136 transitions. [2020-10-28 12:10:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:10:27,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 354 [2020-10-28 12:10:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:27,174 INFO L225 Difference]: With dead ends: 12201 [2020-10-28 12:10:27,174 INFO L226 Difference]: Without dead ends: 6103 [2020-10-28 12:10:27,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6103 states. [2020-10-28 12:10:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6103 to 6090. [2020-10-28 12:10:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6090 states. [2020-10-28 12:10:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 7534 transitions. [2020-10-28 12:10:27,329 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 7534 transitions. Word has length 354 [2020-10-28 12:10:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:27,330 INFO L481 AbstractCegarLoop]: Abstraction has 6090 states and 7534 transitions. [2020-10-28 12:10:27,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:10:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 7534 transitions. [2020-10-28 12:10:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-28 12:10:27,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:27,345 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 12:10:27,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:10:27,345 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1844477026, now seen corresponding path program 1 times [2020-10-28 12:10:27,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:27,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936450676] [2020-10-28 12:10:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:29,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:29,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:10:29,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:29,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:29,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:29,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:10:29,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:29,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:29,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:10:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:29,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:10:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:29,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:29,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:10:29,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 12:10:29,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:29,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:10:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:10:29,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936450676] [2020-10-28 12:10:29,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:29,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:29,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307447907] [2020-10-28 12:10:29,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:29,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:29,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:29,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:29,736 INFO L87 Difference]: Start difference. First operand 6090 states and 7534 transitions. Second operand 7 states. [2020-10-28 12:10:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:33,415 INFO L93 Difference]: Finished difference Result 13719 states and 17224 transitions. [2020-10-28 12:10:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:10:33,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-28 12:10:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:33,442 INFO L225 Difference]: With dead ends: 13719 [2020-10-28 12:10:33,442 INFO L226 Difference]: Without dead ends: 7635 [2020-10-28 12:10:33,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 12:10:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2020-10-28 12:10:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 7052. [2020-10-28 12:10:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7052 states. [2020-10-28 12:10:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 8710 transitions. [2020-10-28 12:10:33,647 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 8710 transitions. Word has length 365 [2020-10-28 12:10:33,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:33,648 INFO L481 AbstractCegarLoop]: Abstraction has 7052 states and 8710 transitions. [2020-10-28 12:10:33,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 8710 transitions. [2020-10-28 12:10:33,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-28 12:10:33,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:33,665 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:10:33,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:10:33,666 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:33,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:33,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1824527065, now seen corresponding path program 1 times [2020-10-28 12:10:33,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:33,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095330737] [2020-10-28 12:10:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:34,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:34,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-28 12:10:34,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-28 12:10:34,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:34,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:10:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:10:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:34,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:34,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:34,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:10:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:34,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:34,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:34,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:10:34,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:34,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:10:34,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:34,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:10:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:34,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:34,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:10:34,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:10:34,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:34,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:10:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:10:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:35,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:10:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:10:35,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:35,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:10:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:10:35,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095330737] [2020-10-28 12:10:35,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:35,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:35,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221533899] [2020-10-28 12:10:35,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:35,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:35,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:35,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:35,220 INFO L87 Difference]: Start difference. First operand 7052 states and 8710 transitions. Second operand 7 states. [2020-10-28 12:10:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:38,700 INFO L93 Difference]: Finished difference Result 15662 states and 19507 transitions. [2020-10-28 12:10:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:10:38,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-10-28 12:10:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:38,731 INFO L225 Difference]: With dead ends: 15662 [2020-10-28 12:10:38,731 INFO L226 Difference]: Without dead ends: 8616 [2020-10-28 12:10:38,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 12:10:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2020-10-28 12:10:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 8600. [2020-10-28 12:10:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8600 states. [2020-10-28 12:10:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8600 states to 8600 states and 10467 transitions. [2020-10-28 12:10:38,945 INFO L78 Accepts]: Start accepts. Automaton has 8600 states and 10467 transitions. Word has length 377 [2020-10-28 12:10:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:38,946 INFO L481 AbstractCegarLoop]: Abstraction has 8600 states and 10467 transitions. [2020-10-28 12:10:38,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 8600 states and 10467 transitions. [2020-10-28 12:10:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-28 12:10:38,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:38,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:38,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:10:38,962 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1862049805, now seen corresponding path program 1 times [2020-10-28 12:10:38,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:38,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128829474] [2020-10-28 12:10:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:39,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:39,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-28 12:10:39,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-28 12:10:39,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:39,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:10:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:10:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:39,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:10:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:40,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:10:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:10:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:10:40,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128829474] [2020-10-28 12:10:40,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:40,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:40,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985124835] [2020-10-28 12:10:40,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:40,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:40,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:40,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:40,523 INFO L87 Difference]: Start difference. First operand 8600 states and 10467 transitions. Second operand 7 states. [2020-10-28 12:10:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:44,336 INFO L93 Difference]: Finished difference Result 19375 states and 23897 transitions. [2020-10-28 12:10:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:10:44,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-28 12:10:44,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:44,374 INFO L225 Difference]: With dead ends: 19375 [2020-10-28 12:10:44,374 INFO L226 Difference]: Without dead ends: 10969 [2020-10-28 12:10:44,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:10:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10969 states. [2020-10-28 12:10:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10969 to 9003. [2020-10-28 12:10:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9003 states. [2020-10-28 12:10:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 10999 transitions. [2020-10-28 12:10:44,621 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 10999 transitions. Word has length 412 [2020-10-28 12:10:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:44,624 INFO L481 AbstractCegarLoop]: Abstraction has 9003 states and 10999 transitions. [2020-10-28 12:10:44,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 10999 transitions. [2020-10-28 12:10:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-28 12:10:44,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:44,647 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:10:44,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:10:44,647 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash -406440093, now seen corresponding path program 1 times [2020-10-28 12:10:44,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:44,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494245120] [2020-10-28 12:10:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:49,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-28 12:10:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:10:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:10:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:10:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:50,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:50,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:50,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:50,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:10:50,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:10:50,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:50,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:10:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:50,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:50,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:10:50,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:10:50,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:50,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:10:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:10:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:10:50,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:10:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:50,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:10:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-28 12:10:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:50,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:50,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:10:50,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:10:50,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:50,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 12:10:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 301 proven. 89 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 12:10:50,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494245120] [2020-10-28 12:10:50,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:50,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:50,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568974273] [2020-10-28 12:10:50,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:50,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:50,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:50,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:50,693 INFO L87 Difference]: Start difference. First operand 9003 states and 10999 transitions. Second operand 7 states. [2020-10-28 12:10:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:54,459 INFO L93 Difference]: Finished difference Result 19757 states and 24097 transitions. [2020-10-28 12:10:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:10:54,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-28 12:10:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:54,496 INFO L225 Difference]: With dead ends: 19757 [2020-10-28 12:10:54,496 INFO L226 Difference]: Without dead ends: 10948 [2020-10-28 12:10:54,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:10:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2020-10-28 12:10:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 10163. [2020-10-28 12:10:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10163 states. [2020-10-28 12:10:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10163 states to 10163 states and 12293 transitions. [2020-10-28 12:10:54,754 INFO L78 Accepts]: Start accepts. Automaton has 10163 states and 12293 transitions. Word has length 494 [2020-10-28 12:10:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:54,755 INFO L481 AbstractCegarLoop]: Abstraction has 10163 states and 12293 transitions. [2020-10-28 12:10:54,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 10163 states and 12293 transitions. [2020-10-28 12:10:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-28 12:10:54,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:54,780 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:54,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:10:54,781 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1561381461, now seen corresponding path program 1 times [2020-10-28 12:10:54,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:54,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190429269] [2020-10-28 12:10:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:00,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 12:11:00,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:11:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-28 12:11:00,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:00,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 12:11:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:11:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 498 [2020-10-28 12:11:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:00,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:00,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:11:00,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:11:00,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:00,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:11:00,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:11:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:11:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:11:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:11:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:00,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:11:00,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:11:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:11:01,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 255 proven. 89 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-28 12:11:01,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190429269] [2020-10-28 12:11:01,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:01,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:11:01,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342990536] [2020-10-28 12:11:01,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:11:01,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:01,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:11:01,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:11:01,484 INFO L87 Difference]: Start difference. First operand 10163 states and 12293 transitions. Second operand 10 states. [2020-10-28 12:11:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:09,065 INFO L93 Difference]: Finished difference Result 31175 states and 38665 transitions. [2020-10-28 12:11:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 12:11:09,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 514 [2020-10-28 12:11:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:09,133 INFO L225 Difference]: With dead ends: 31175 [2020-10-28 12:11:09,133 INFO L226 Difference]: Without dead ends: 21014 [2020-10-28 12:11:09,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-28 12:11:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21014 states. [2020-10-28 12:11:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21014 to 20120. [2020-10-28 12:11:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20120 states. [2020-10-28 12:11:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20120 states to 20120 states and 24364 transitions. [2020-10-28 12:11:09,814 INFO L78 Accepts]: Start accepts. Automaton has 20120 states and 24364 transitions. Word has length 514 [2020-10-28 12:11:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:09,815 INFO L481 AbstractCegarLoop]: Abstraction has 20120 states and 24364 transitions. [2020-10-28 12:11:09,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:11:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 20120 states and 24364 transitions. [2020-10-28 12:11:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-28 12:11:09,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:09,858 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:11:09,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:11:09,858 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:09,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:09,859 INFO L82 PathProgramCache]: Analyzing trace with hash -4953102, now seen corresponding path program 1 times [2020-10-28 12:11:09,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:09,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239501579] [2020-10-28 12:11:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-28 12:11:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3843 [2020-10-28 12:11:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:13,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-28 12:11:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:11:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:13,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:13,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:13,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:13,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:11:13,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:13,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:13,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:11:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:11:14,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 12:11:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:11:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:11:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:11:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-28 12:11:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:14,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:11:14,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:11:14,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:14,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 12:11:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 301 proven. 89 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-28 12:11:14,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239501579] [2020-10-28 12:11:14,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:14,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:14,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127688398] [2020-10-28 12:11:14,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:14,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:14,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:14,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:14,780 INFO L87 Difference]: Start difference. First operand 20120 states and 24364 transitions. Second operand 7 states. [2020-10-28 12:11:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:19,073 INFO L93 Difference]: Finished difference Result 45227 states and 55471 transitions. [2020-10-28 12:11:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:19,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 551 [2020-10-28 12:11:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:19,152 INFO L225 Difference]: With dead ends: 45227 [2020-10-28 12:11:19,152 INFO L226 Difference]: Without dead ends: 25491 [2020-10-28 12:11:19,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 12:11:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25491 states. [2020-10-28 12:11:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25491 to 25468. [2020-10-28 12:11:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25468 states. [2020-10-28 12:11:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25468 states to 25468 states and 30910 transitions. [2020-10-28 12:11:19,770 INFO L78 Accepts]: Start accepts. Automaton has 25468 states and 30910 transitions. Word has length 551 [2020-10-28 12:11:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:19,771 INFO L481 AbstractCegarLoop]: Abstraction has 25468 states and 30910 transitions. [2020-10-28 12:11:19,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 25468 states and 30910 transitions. [2020-10-28 12:11:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2020-10-28 12:11:19,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:19,839 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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 12:11:19,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:11:19,839 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:19,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1602108059, now seen corresponding path program 1 times [2020-10-28 12:11:19,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:19,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374185042] [2020-10-28 12:11:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-28 12:11:25,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:11:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 12:11:25,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:11:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 12:11:25,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:11:25,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:11:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:11:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:11:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 12:11:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-28 12:11:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:11:25,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:11:25,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 12:11:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-10-28 12:11:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:11:25,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:11:25,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 12:11:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 382 proven. 193 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2020-10-28 12:11:26,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374185042] [2020-10-28 12:11:26,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:26,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:26,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191402245] [2020-10-28 12:11:26,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:26,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:26,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:26,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:26,092 INFO L87 Difference]: Start difference. First operand 25468 states and 30910 transitions. Second operand 7 states. [2020-10-28 12:11:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:31,156 INFO L93 Difference]: Finished difference Result 53047 states and 64518 transitions. [2020-10-28 12:11:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:31,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 638 [2020-10-28 12:11:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:31,250 INFO L225 Difference]: With dead ends: 53047 [2020-10-28 12:11:31,251 INFO L226 Difference]: Without dead ends: 27963 [2020-10-28 12:11:31,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 12:11:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27963 states. [2020-10-28 12:11:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27963 to 26804. [2020-10-28 12:11:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26804 states. [2020-10-28 12:11:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26804 states to 26804 states and 32336 transitions. [2020-10-28 12:11:31,939 INFO L78 Accepts]: Start accepts. Automaton has 26804 states and 32336 transitions. Word has length 638 [2020-10-28 12:11:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:31,940 INFO L481 AbstractCegarLoop]: Abstraction has 26804 states and 32336 transitions. [2020-10-28 12:11:31,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 26804 states and 32336 transitions. [2020-10-28 12:11:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2020-10-28 12:11:31,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:31,983 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:31,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:11:31,984 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:31,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2002276695, now seen corresponding path program 1 times [2020-10-28 12:11:31,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:31,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960339095] [2020-10-28 12:11:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 673 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 441 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:37,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:11:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:37,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:11:37,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:11:37,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:11:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:11:37,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:11:37,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:11:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-28 12:11:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:11:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:37,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-28 12:11:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:38,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:38,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:11:38,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:38,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:11:38,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:38,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 12:11:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:38,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 434 proven. 89 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-28 12:11:38,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960339095] [2020-10-28 12:11:38,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:38,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:38,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80902944] [2020-10-28 12:11:38,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:38,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:38,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:38,320 INFO L87 Difference]: Start difference. First operand 26804 states and 32336 transitions. Second operand 7 states. [2020-10-28 12:11:42,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:42,132 INFO L93 Difference]: Finished difference Result 58180 states and 70302 transitions. [2020-10-28 12:11:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:42,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 653 [2020-10-28 12:11:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:42,209 INFO L225 Difference]: With dead ends: 58180 [2020-10-28 12:11:42,209 INFO L226 Difference]: Without dead ends: 31760 [2020-10-28 12:11:42,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 12:11:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31760 states. [2020-10-28 12:11:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31760 to 30586. [2020-10-28 12:11:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30586 states. [2020-10-28 12:11:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30586 states to 30586 states and 36800 transitions. [2020-10-28 12:11:43,032 INFO L78 Accepts]: Start accepts. Automaton has 30586 states and 36800 transitions. Word has length 653 [2020-10-28 12:11:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:43,033 INFO L481 AbstractCegarLoop]: Abstraction has 30586 states and 36800 transitions. [2020-10-28 12:11:43,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 30586 states and 36800 transitions. [2020-10-28 12:11:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2020-10-28 12:11:43,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:43,079 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:43,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:11:43,080 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1793697074, now seen corresponding path program 1 times [2020-10-28 12:11:43,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:43,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942569956] [2020-10-28 12:11:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 710 [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-10-28 12:11:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:11:48,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:11:48,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:11:48,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:11:48,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:11:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:11:48,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:11:48,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:11:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-28 12:11:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 12:11:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-28 12:11:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:11:48,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:11:48,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:11:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-28 12:11:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:11:49,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:11:49,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:49,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:11:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 356 proven. 258 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2020-10-28 12:11:49,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942569956] [2020-10-28 12:11:49,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:49,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:49,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750594933] [2020-10-28 12:11:49,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:49,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:49,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:49,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:49,339 INFO L87 Difference]: Start difference. First operand 30586 states and 36800 transitions. Second operand 7 states. [2020-10-28 12:11:54,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:54,131 INFO L93 Difference]: Finished difference Result 60838 states and 73250 transitions. [2020-10-28 12:11:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:54,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 690 [2020-10-28 12:11:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:54,202 INFO L225 Difference]: With dead ends: 60838 [2020-10-28 12:11:54,202 INFO L226 Difference]: Without dead ends: 30446 [2020-10-28 12:11:54,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30446 states. [2020-10-28 12:11:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30446 to 29634. [2020-10-28 12:11:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29634 states. [2020-10-28 12:11:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29634 states to 29634 states and 35061 transitions. [2020-10-28 12:11:54,837 INFO L78 Accepts]: Start accepts. Automaton has 29634 states and 35061 transitions. Word has length 690 [2020-10-28 12:11:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:54,838 INFO L481 AbstractCegarLoop]: Abstraction has 29634 states and 35061 transitions. [2020-10-28 12:11:54,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 29634 states and 35061 transitions. [2020-10-28 12:11:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-10-28 12:11:54,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:54,878 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:54,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:11:54,879 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:54,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1465901470, now seen corresponding path program 1 times [2020-10-28 12:11:54,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:54,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037939358] [2020-10-28 12:11:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 720 [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 12:12:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:00,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:00,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:12:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:00,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:12:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 12:12:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 12:12:00,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 12:12:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-28 12:12:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-28 12:12:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:00,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-28 12:12:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:01,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:01,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 256 proven. 351 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-10-28 12:12:01,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037939358] [2020-10-28 12:12:01,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:01,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:01,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959706266] [2020-10-28 12:12:01,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:01,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:01,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:01,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:01,594 INFO L87 Difference]: Start difference. First operand 29634 states and 35061 transitions. Second operand 7 states. [2020-10-28 12:12:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:05,514 INFO L93 Difference]: Finished difference Result 59156 states and 69880 transitions. [2020-10-28 12:12:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:12:05,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 700 [2020-10-28 12:12:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:05,587 INFO L225 Difference]: With dead ends: 59156 [2020-10-28 12:12:05,587 INFO L226 Difference]: Without dead ends: 32336 [2020-10-28 12:12:05,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32336 states. [2020-10-28 12:12:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32336 to 30392. [2020-10-28 12:12:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30392 states. [2020-10-28 12:12:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30392 states to 30392 states and 35645 transitions. [2020-10-28 12:12:06,191 INFO L78 Accepts]: Start accepts. Automaton has 30392 states and 35645 transitions. Word has length 700 [2020-10-28 12:12:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:06,191 INFO L481 AbstractCegarLoop]: Abstraction has 30392 states and 35645 transitions. [2020-10-28 12:12:06,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 30392 states and 35645 transitions. [2020-10-28 12:12:06,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2020-10-28 12:12:06,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:06,223 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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 12:12:06,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:12:06,223 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:06,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:06,224 INFO L82 PathProgramCache]: Analyzing trace with hash 831540334, now seen corresponding path program 1 times [2020-10-28 12:12:06,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:06,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854689626] [2020-10-28 12:12:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:07,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 735 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 12:12:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:11,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:12:11,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:12:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:12:11,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:12:11,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:12:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 12:12:11,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:12:11,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:12:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-28 12:12:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:12:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:12:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:12,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 12:12:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-28 12:12:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:12:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:12:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:12,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-28 12:12:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-28 12:12:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 12:12:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 449 proven. 222 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2020-10-28 12:12:12,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854689626] [2020-10-28 12:12:12,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:12,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:12,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326326378] [2020-10-28 12:12:12,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:12,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:12,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:12,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:12,519 INFO L87 Difference]: Start difference. First operand 30392 states and 35645 transitions. Second operand 7 states. [2020-10-28 12:12:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:17,525 INFO L93 Difference]: Finished difference Result 62330 states and 73141 transitions. [2020-10-28 12:12:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:12:17,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 713 [2020-10-28 12:12:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:17,613 INFO L225 Difference]: With dead ends: 62330 [2020-10-28 12:12:17,614 INFO L226 Difference]: Without dead ends: 32322 [2020-10-28 12:12:17,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 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 12:12:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32322 states. [2020-10-28 12:12:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32322 to 31900. [2020-10-28 12:12:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31900 states. [2020-10-28 12:12:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31900 states to 31900 states and 37111 transitions. [2020-10-28 12:12:18,186 INFO L78 Accepts]: Start accepts. Automaton has 31900 states and 37111 transitions. Word has length 713 [2020-10-28 12:12:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:18,186 INFO L481 AbstractCegarLoop]: Abstraction has 31900 states and 37111 transitions. [2020-10-28 12:12:18,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 31900 states and 37111 transitions. [2020-10-28 12:12:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2020-10-28 12:12:18,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:18,217 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:12:18,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:12:18,217 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:18,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1555024706, now seen corresponding path program 1 times [2020-10-28 12:12:18,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:18,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354722024] [2020-10-28 12:12:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:18,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:22,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 775 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 12:12:23,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:23,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:23,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:12:23,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:23,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:23,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:12:23,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:23,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:12:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:12:23,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:12:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:12:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:24,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 12:12:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 12:12:24,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:24,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 12:12:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-28 12:12:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:24,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:12:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:24,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:12:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:12:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:24,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:12:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:24,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-10-28 12:12:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:12:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 343 proven. 351 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-10-28 12:12:25,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354722024] [2020-10-28 12:12:25,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:25,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:25,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437724503] [2020-10-28 12:12:25,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:25,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:25,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:25,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:25,087 INFO L87 Difference]: Start difference. First operand 31900 states and 37111 transitions. Second operand 7 states. [2020-10-28 12:12:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:29,465 INFO L93 Difference]: Finished difference Result 60232 states and 70117 transitions. [2020-10-28 12:12:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:12:29,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 753 [2020-10-28 12:12:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:29,524 INFO L225 Difference]: With dead ends: 60232 [2020-10-28 12:12:29,525 INFO L226 Difference]: Without dead ends: 30214 [2020-10-28 12:12:29,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30214 states. [2020-10-28 12:12:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30214 to 30170. [2020-10-28 12:12:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30170 states. [2020-10-28 12:12:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30170 states to 30170 states and 34733 transitions. [2020-10-28 12:12:30,090 INFO L78 Accepts]: Start accepts. Automaton has 30170 states and 34733 transitions. Word has length 753 [2020-10-28 12:12:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:30,091 INFO L481 AbstractCegarLoop]: Abstraction has 30170 states and 34733 transitions. [2020-10-28 12:12:30,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 30170 states and 34733 transitions. [2020-10-28 12:12:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2020-10-28 12:12:30,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:30,132 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-10-28 12:12:30,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:12:30,133 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -987562794, now seen corresponding path program 1 times [2020-10-28 12:12:30,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:30,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933226816] [2020-10-28 12:12:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking...