/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=SHALLOWEST --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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:39:13,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:39:13,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:39:13,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:39:13,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:39:13,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:39:13,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:39:13,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:39:13,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:39:13,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:39:13,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:39:13,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:39:13,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:39:13,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:39:13,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:39:13,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:39:13,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:39:13,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:39:13,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:39:13,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:39:13,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:39:13,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:39:13,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:39:13,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:39:13,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:39:13,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:39:13,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:39:13,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:39:13,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:39:13,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:39:13,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:39:13,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:39:13,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:39:13,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:39:13,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:39:13,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:39:13,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:39:13,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:39:13,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:39:13,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:39:13,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:39:13,918 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 [2020-10-26 22:39:13,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:39:13,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:39:13,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:39:13,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:39:13,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:39:13,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:39:13,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:39:13,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:39:13,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:39:13,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:39:13,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:39:13,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:39:13,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:39:13,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:39:13,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:39:13,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:39:13,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:39:13,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:39:13,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:39:13,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:39:13,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:39:13,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:39:13,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:39:13,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:39:13,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:39:13,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:39:13,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:39:13,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:39:13,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:39:13,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:39:14,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:39:14,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:39:14,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:39:14,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:39:14,377 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:39:14,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-26 22:39:14,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69489c239/76a0ea3dbd6740f495c6a9cd9d7c4ec6/FLAG13b94e69c [2020-10-26 22:39:15,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:39:15,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-26 22:39:15,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69489c239/76a0ea3dbd6740f495c6a9cd9d7c4ec6/FLAG13b94e69c [2020-10-26 22:39:15,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69489c239/76a0ea3dbd6740f495c6a9cd9d7c4ec6 [2020-10-26 22:39:15,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:39:15,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:39:15,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:39:15,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:39:15,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:39:15,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:39:15" (1/1) ... [2020-10-26 22:39:15,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d7ca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:15, skipping insertion in model container [2020-10-26 22:39:15,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:39:15" (1/1) ... [2020-10-26 22:39:15,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:39:15,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:39:16,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:39:16,239 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:39:16,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:39:16,593 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:39:16,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16 WrapperNode [2020-10-26 22:39:16,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:39:16,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:39:16,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:39:16,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:39:16,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (1/1) ... [2020-10-26 22:39:16,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (1/1) ... [2020-10-26 22:39:16,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (1/1) ... [2020-10-26 22:39:16,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (1/1) ... [2020-10-26 22:39:16,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (1/1) ... [2020-10-26 22:39:16,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (1/1) ... [2020-10-26 22:39:16,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (1/1) ... [2020-10-26 22:39:16,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:39:16,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:39:16,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:39:16,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:39:16,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (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 [2020-10-26 22:39:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:39:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:39:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:39:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:39:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:39:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:39:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:39:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:39:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:39:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:39:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:39:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:39:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:39:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:39:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:39:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:39:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:39:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:39:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:39:18,643 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:39:18,644 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:39:18,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:39:18 BoogieIcfgContainer [2020-10-26 22:39:18,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:39:18,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:39:18,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:39:18,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:39:18,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:39:15" (1/3) ... [2020-10-26 22:39:18,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c496ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:39:18, skipping insertion in model container [2020-10-26 22:39:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:16" (2/3) ... [2020-10-26 22:39:18,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c496ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:39:18, skipping insertion in model container [2020-10-26 22:39:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:39:18" (3/3) ... [2020-10-26 22:39:18,656 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label28.c [2020-10-26 22:39:18,669 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:39:18,676 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:39:18,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:39:18,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:39:18,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:39:18,724 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:39:18,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:39:18,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:39:18,724 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:39:18,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:39:18,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:39:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:39:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 22:39:18,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:18,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:18,765 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:18,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:18,772 INFO L82 PathProgramCache]: Analyzing trace with hash -471549154, now seen corresponding path program 1 times [2020-10-26 22:39:18,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:18,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448335913] [2020-10-26 22:39:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:19,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:19,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 22:39:19,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-26 22:39:19,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:39:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 22:39:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:39:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:19,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:39:19,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:19,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:39:20,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448335913] [2020-10-26 22:39:20,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:39:20,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 22:39:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840399065] [2020-10-26 22:39:20,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:39:20,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:39:20,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:39:20,065 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-26 22:39:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:24,402 INFO L93 Difference]: Finished difference Result 1003 states and 1799 transitions. [2020-10-26 22:39:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:39:24,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-26 22:39:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:24,426 INFO L225 Difference]: With dead ends: 1003 [2020-10-26 22:39:24,426 INFO L226 Difference]: Without dead ends: 639 [2020-10-26 22:39:24,440 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 [2020-10-26 22:39:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-26 22:39:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 622. [2020-10-26 22:39:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-26 22:39:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 951 transitions. [2020-10-26 22:39:24,558 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 951 transitions. Word has length 55 [2020-10-26 22:39:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:24,559 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 951 transitions. [2020-10-26 22:39:24,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:39:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 951 transitions. [2020-10-26 22:39:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-26 22:39:24,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:24,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:24,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:39:24,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:24,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1676767937, now seen corresponding path program 1 times [2020-10-26 22:39:24,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:24,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628975653] [2020-10-26 22:39:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:39:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1562 [2020-10-26 22:39:26,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:26,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:26,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:26,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 22:39:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:26,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:26,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:39:26,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-26 22:39:26,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:39:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:39:26,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628975653] [2020-10-26 22:39:26,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:39:26,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:39:26,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953553594] [2020-10-26 22:39:26,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:26,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:26,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:26,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:26,802 INFO L87 Difference]: Start difference. First operand 622 states and 951 transitions. Second operand 7 states. [2020-10-26 22:39:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:30,549 INFO L93 Difference]: Finished difference Result 1867 states and 2957 transitions. [2020-10-26 22:39:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:30,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-26 22:39:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:30,572 INFO L225 Difference]: With dead ends: 1867 [2020-10-26 22:39:30,572 INFO L226 Difference]: Without dead ends: 1251 [2020-10-26 22:39:30,576 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 [2020-10-26 22:39:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-10-26 22:39:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1218. [2020-10-26 22:39:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-10-26 22:39:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1705 transitions. [2020-10-26 22:39:30,708 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1705 transitions. Word has length 125 [2020-10-26 22:39:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:30,710 INFO L481 AbstractCegarLoop]: Abstraction has 1218 states and 1705 transitions. [2020-10-26 22:39:30,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1705 transitions. [2020-10-26 22:39:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-26 22:39:30,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:30,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:30,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:39:30,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:30,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1754818029, now seen corresponding path program 1 times [2020-10-26 22:39:30,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:30,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807279877] [2020-10-26 22:39:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:32,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-26 22:39:32,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:39:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1947 [2020-10-26 22:39:32,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:39:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:39:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:33,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:33,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:33,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:39:33,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:33,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:33,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:33,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:39:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 22:39:33,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:39:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:39:33,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807279877] [2020-10-26 22:39:33,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:33,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:39:33,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666248691] [2020-10-26 22:39:33,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:33,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:33,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:33,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:33,359 INFO L87 Difference]: Start difference. First operand 1218 states and 1705 transitions. Second operand 7 states. [2020-10-26 22:39:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:37,267 INFO L93 Difference]: Finished difference Result 3654 states and 5271 transitions. [2020-10-26 22:39:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:37,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-26 22:39:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:37,289 INFO L225 Difference]: With dead ends: 3654 [2020-10-26 22:39:37,290 INFO L226 Difference]: Without dead ends: 2442 [2020-10-26 22:39:37,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-10-26 22:39:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2217. [2020-10-26 22:39:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-26 22:39:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2967 transitions. [2020-10-26 22:39:37,401 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2967 transitions. Word has length 135 [2020-10-26 22:39:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:37,404 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 2967 transitions. [2020-10-26 22:39:37,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2967 transitions. [2020-10-26 22:39:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-26 22:39:37,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:37,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:39:37,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:39:37,412 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:37,415 INFO L82 PathProgramCache]: Analyzing trace with hash 725465442, now seen corresponding path program 1 times [2020-10-26 22:39:37,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:37,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579879114] [2020-10-26 22:39:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:37,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:42,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:42,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-26 22:39:42,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:39:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 22:39:42,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:42,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:39:42,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:39:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:42,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:42,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:42,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:39:42,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:42,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:39:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 22:39:42,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:39:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 22:39:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:43,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:39:43,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 22:39:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 22:39:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 94 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:39:43,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579879114] [2020-10-26 22:39:43,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:43,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:43,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633706298] [2020-10-26 22:39:43,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:43,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:43,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:43,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:43,128 INFO L87 Difference]: Start difference. First operand 2217 states and 2967 transitions. Second operand 7 states. [2020-10-26 22:39:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:45,997 INFO L93 Difference]: Finished difference Result 4483 states and 6057 transitions. [2020-10-26 22:39:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:39:45,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-26 22:39:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:46,014 INFO L225 Difference]: With dead ends: 4483 [2020-10-26 22:39:46,014 INFO L226 Difference]: Without dead ends: 2272 [2020-10-26 22:39:46,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:39:46,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-10-26 22:39:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2219. [2020-10-26 22:39:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-10-26 22:39:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2945 transitions. [2020-10-26 22:39:46,107 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2945 transitions. Word has length 198 [2020-10-26 22:39:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:46,110 INFO L481 AbstractCegarLoop]: Abstraction has 2219 states and 2945 transitions. [2020-10-26 22:39:46,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2945 transitions. [2020-10-26 22:39:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-26 22:39:46,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:46,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:46,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:39:46,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:46,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1514706274, now seen corresponding path program 1 times [2020-10-26 22:39:46,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:46,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222000788] [2020-10-26 22:39:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:49,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:49,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-26 22:39:49,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2871 [2020-10-26 22:39:49,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:39:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 22:39:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:49,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:49,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:49,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:49,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:39:49,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:49,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 22:39:49,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:49,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:49,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:49,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:39:49,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:49,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:39:49,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:39:49,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:49,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222000788] [2020-10-26 22:39:49,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:49,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:49,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071411519] [2020-10-26 22:39:49,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:49,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:49,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:49,825 INFO L87 Difference]: Start difference. First operand 2219 states and 2945 transitions. Second operand 7 states. [2020-10-26 22:39:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:53,668 INFO L93 Difference]: Finished difference Result 5389 states and 8115 transitions. [2020-10-26 22:39:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:53,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-26 22:39:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:53,699 INFO L225 Difference]: With dead ends: 5389 [2020-10-26 22:39:53,699 INFO L226 Difference]: Without dead ends: 3176 [2020-10-26 22:39:53,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2020-10-26 22:39:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 3023. [2020-10-26 22:39:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3023 states. [2020-10-26 22:39:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 3960 transitions. [2020-10-26 22:39:53,858 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 3960 transitions. Word has length 251 [2020-10-26 22:39:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:53,859 INFO L481 AbstractCegarLoop]: Abstraction has 3023 states and 3960 transitions. [2020-10-26 22:39:53,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 3960 transitions. [2020-10-26 22:39:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-26 22:39:53,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:53,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:39:53,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:39:53,867 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:53,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:53,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1469502141, now seen corresponding path program 1 times [2020-10-26 22:39:53,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:53,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164753308] [2020-10-26 22:39:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:58,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:58,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-26 22:39:58,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:39:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 22:39:58,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:39:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 22:39:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:59,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:59,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:59,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:39:59,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:59,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:59,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:59,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:59,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:59,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:59,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-26 22:39:59,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:59,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:39:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:59,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:39:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:39:59,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 22:39:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:40:00,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164753308] [2020-10-26 22:40:00,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:00,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:00,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027392018] [2020-10-26 22:40:00,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:00,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:00,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:00,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:00,017 INFO L87 Difference]: Start difference. First operand 3023 states and 3960 transitions. Second operand 7 states. [2020-10-26 22:40:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:03,379 INFO L93 Difference]: Finished difference Result 7078 states and 9985 transitions. [2020-10-26 22:40:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:40:03,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-26 22:40:03,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:03,407 INFO L225 Difference]: With dead ends: 7078 [2020-10-26 22:40:03,407 INFO L226 Difference]: Without dead ends: 4249 [2020-10-26 22:40:03,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2020-10-26 22:40:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4184. [2020-10-26 22:40:03,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2020-10-26 22:40:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 5365 transitions. [2020-10-26 22:40:03,546 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 5365 transitions. Word has length 266 [2020-10-26 22:40:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:03,547 INFO L481 AbstractCegarLoop]: Abstraction has 4184 states and 5365 transitions. [2020-10-26 22:40:03,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 5365 transitions. [2020-10-26 22:40:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-26 22:40:03,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:03,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:03,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:40:03,554 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash -534832786, now seen corresponding path program 1 times [2020-10-26 22:40:03,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:03,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069174790] [2020-10-26 22:40:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:06,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:06,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-26 22:40:06,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2381 [2020-10-26 22:40:06,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:40:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 22:40:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:06,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:06,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:06,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:06,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:40:06,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:06,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:06,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:06,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:06,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 22:40:06,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:06,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:06,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:40:06,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 22:40:06,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 22:40:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:40:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:40:06,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069174790] [2020-10-26 22:40:06,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:06,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:06,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588799843] [2020-10-26 22:40:06,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:06,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:06,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:06,765 INFO L87 Difference]: Start difference. First operand 4184 states and 5365 transitions. Second operand 7 states. [2020-10-26 22:40:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:10,458 INFO L93 Difference]: Finished difference Result 10352 states and 13694 transitions. [2020-10-26 22:40:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:40:10,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-26 22:40:10,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:10,494 INFO L225 Difference]: With dead ends: 10352 [2020-10-26 22:40:10,495 INFO L226 Difference]: Without dead ends: 6362 [2020-10-26 22:40:10,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2020-10-26 22:40:10,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 6341. [2020-10-26 22:40:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6341 states. [2020-10-26 22:40:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 8256 transitions. [2020-10-26 22:40:10,709 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 8256 transitions. Word has length 272 [2020-10-26 22:40:10,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:10,710 INFO L481 AbstractCegarLoop]: Abstraction has 6341 states and 8256 transitions. [2020-10-26 22:40:10,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 8256 transitions. [2020-10-26 22:40:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-26 22:40:10,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:10,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:10,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:40:10,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash 973396250, now seen corresponding path program 1 times [2020-10-26 22:40:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:10,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577697049] [2020-10-26 22:40:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:11,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:11,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-26 22:40:11,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-26 22:40:11,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:40:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 22:40:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:11,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:11,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:11,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:11,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:40:11,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:11,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:11,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:11,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 22:40:11,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:12,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:12,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:40:12,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 22:40:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:40:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-26 22:40:12,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577697049] [2020-10-26 22:40:12,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:12,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:40:12,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202059127] [2020-10-26 22:40:12,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:40:12,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:12,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:40:12,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:40:12,259 INFO L87 Difference]: Start difference. First operand 6341 states and 8256 transitions. Second operand 5 states. [2020-10-26 22:40:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:15,457 INFO L93 Difference]: Finished difference Result 13654 states and 17970 transitions. [2020-10-26 22:40:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:40:15,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-26 22:40:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:15,514 INFO L225 Difference]: With dead ends: 13654 [2020-10-26 22:40:15,514 INFO L226 Difference]: Without dead ends: 7507 [2020-10-26 22:40:15,532 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 [2020-10-26 22:40:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7507 states. [2020-10-26 22:40:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7507 to 6929. [2020-10-26 22:40:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6929 states. [2020-10-26 22:40:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 8963 transitions. [2020-10-26 22:40:15,751 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 8963 transitions. Word has length 282 [2020-10-26 22:40:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:15,752 INFO L481 AbstractCegarLoop]: Abstraction has 6929 states and 8963 transitions. [2020-10-26 22:40:15,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:40:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 8963 transitions. [2020-10-26 22:40:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-26 22:40:15,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:15,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:15,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:40:15,763 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash 684586708, now seen corresponding path program 1 times [2020-10-26 22:40:15,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:15,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568562820] [2020-10-26 22:40:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:15,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:17,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:17,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-26 22:40:17,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:40:17,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-26 22:40:17,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:40:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:40:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 22:40:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:17,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:17,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:17,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:17,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:17,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:17,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:17,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:17,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:17,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:40:17,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 22:40:17,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:40:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:17,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:40:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:17,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:18,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:40:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 122 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:40:18,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568562820] [2020-10-26 22:40:18,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:18,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:18,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541161674] [2020-10-26 22:40:18,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:18,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:18,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:18,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:18,185 INFO L87 Difference]: Start difference. First operand 6929 states and 8963 transitions. Second operand 7 states. [2020-10-26 22:40:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:23,034 INFO L93 Difference]: Finished difference Result 15419 states and 20268 transitions. [2020-10-26 22:40:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:40:23,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-26 22:40:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:23,070 INFO L225 Difference]: With dead ends: 15419 [2020-10-26 22:40:23,070 INFO L226 Difference]: Without dead ends: 8684 [2020-10-26 22:40:23,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8684 states. [2020-10-26 22:40:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8684 to 8479. [2020-10-26 22:40:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8479 states. [2020-10-26 22:40:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 10945 transitions. [2020-10-26 22:40:23,302 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 10945 transitions. Word has length 282 [2020-10-26 22:40:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:23,303 INFO L481 AbstractCegarLoop]: Abstraction has 8479 states and 10945 transitions. [2020-10-26 22:40:23,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 10945 transitions. [2020-10-26 22:40:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-26 22:40:23,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:23,314 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:23,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:40:23,315 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:23,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1006733031, now seen corresponding path program 1 times [2020-10-26 22:40:23,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:23,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622067925] [2020-10-26 22:40:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-26 22:40:24,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-26 22:40:24,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:40:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:40:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 22:40:24,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:24,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:40:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:40:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:40:25,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622067925] [2020-10-26 22:40:25,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:25,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:25,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429384828] [2020-10-26 22:40:25,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:25,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:25,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:25,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:25,147 INFO L87 Difference]: Start difference. First operand 8479 states and 10945 transitions. Second operand 7 states. [2020-10-26 22:40:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:28,262 INFO L93 Difference]: Finished difference Result 16872 states and 22282 transitions. [2020-10-26 22:40:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 22:40:28,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-26 22:40:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:28,293 INFO L225 Difference]: With dead ends: 16872 [2020-10-26 22:40:28,294 INFO L226 Difference]: Without dead ends: 8587 [2020-10-26 22:40:28,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:40:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2020-10-26 22:40:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8473. [2020-10-26 22:40:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8473 states. [2020-10-26 22:40:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8473 states to 8473 states and 10533 transitions. [2020-10-26 22:40:28,529 INFO L78 Accepts]: Start accepts. Automaton has 8473 states and 10533 transitions. Word has length 293 [2020-10-26 22:40:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:28,530 INFO L481 AbstractCegarLoop]: Abstraction has 8473 states and 10533 transitions. [2020-10-26 22:40:28,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states and 10533 transitions. [2020-10-26 22:40:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-26 22:40:28,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:28,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:28,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:40:28,542 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:28,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:28,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1085332190, now seen corresponding path program 1 times [2020-10-26 22:40:28,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:28,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082143580] [2020-10-26 22:40:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-26 22:40:29,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:29,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-26 22:40:29,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:40:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:40:29,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:29,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:29,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 22:40:29,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:40:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:40:29,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 22:40:29,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:40:29,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082143580] [2020-10-26 22:40:29,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:29,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:29,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107331570] [2020-10-26 22:40:29,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:29,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:29,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:29,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:29,913 INFO L87 Difference]: Start difference. First operand 8473 states and 10533 transitions. Second operand 7 states. [2020-10-26 22:40:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:33,548 INFO L93 Difference]: Finished difference Result 18119 states and 22765 transitions. [2020-10-26 22:40:33,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:40:33,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-26 22:40:33,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:33,583 INFO L225 Difference]: With dead ends: 18119 [2020-10-26 22:40:33,584 INFO L226 Difference]: Without dead ends: 9840 [2020-10-26 22:40:33,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:40:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9840 states. [2020-10-26 22:40:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9840 to 9805. [2020-10-26 22:40:33,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9805 states. [2020-10-26 22:40:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9805 states to 9805 states and 12102 transitions. [2020-10-26 22:40:33,832 INFO L78 Accepts]: Start accepts. Automaton has 9805 states and 12102 transitions. Word has length 296 [2020-10-26 22:40:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:33,833 INFO L481 AbstractCegarLoop]: Abstraction has 9805 states and 12102 transitions. [2020-10-26 22:40:33,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 9805 states and 12102 transitions. [2020-10-26 22:40:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-26 22:40:33,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:33,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:33,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:40:33,844 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1583199677, now seen corresponding path program 1 times [2020-10-26 22:40:33,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:33,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334988028] [2020-10-26 22:40:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:35,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 22:40:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:35,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:35,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:35,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:35,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:35,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:35,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:40:35,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:40:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:35,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:36,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:40:36,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 22:40:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:40:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:40:36,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334988028] [2020-10-26 22:40:36,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:36,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:36,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307682352] [2020-10-26 22:40:36,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:36,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:36,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:36,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:36,157 INFO L87 Difference]: Start difference. First operand 9805 states and 12102 transitions. Second operand 7 states. [2020-10-26 22:40:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:40,372 INFO L93 Difference]: Finished difference Result 21037 states and 26633 transitions. [2020-10-26 22:40:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:40:40,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-26 22:40:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:40,413 INFO L225 Difference]: With dead ends: 21037 [2020-10-26 22:40:40,414 INFO L226 Difference]: Without dead ends: 11426 [2020-10-26 22:40:40,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11426 states. [2020-10-26 22:40:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11426 to 11326. [2020-10-26 22:40:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11326 states. [2020-10-26 22:40:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11326 states to 11326 states and 13764 transitions. [2020-10-26 22:40:40,715 INFO L78 Accepts]: Start accepts. Automaton has 11326 states and 13764 transitions. Word has length 299 [2020-10-26 22:40:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:40,716 INFO L481 AbstractCegarLoop]: Abstraction has 11326 states and 13764 transitions. [2020-10-26 22:40:40,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11326 states and 13764 transitions. [2020-10-26 22:40:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-26 22:40:40,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:40,728 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:40,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:40:40,728 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1242211868, now seen corresponding path program 1 times [2020-10-26 22:40:40,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:40,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167421158] [2020-10-26 22:40:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:42,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:42,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-26 22:40:42,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:42,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2172 [2020-10-26 22:40:42,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:40:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:40:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 330 [2020-10-26 22:40:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:43,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:43,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:43,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:43,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 22:40:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:40:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:43,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:40:43,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:43,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:43,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:43,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:43,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-26 22:40:43,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 22:40:43,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:40:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 122 proven. 96 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:40:43,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167421158] [2020-10-26 22:40:43,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:43,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:40:43,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542526411] [2020-10-26 22:40:43,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:40:43,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:43,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:40:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:40:43,930 INFO L87 Difference]: Start difference. First operand 11326 states and 13764 transitions. Second operand 9 states. [2020-10-26 22:40:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:48,940 INFO L93 Difference]: Finished difference Result 27240 states and 34537 transitions. [2020-10-26 22:40:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:40:48,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 325 [2020-10-26 22:40:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:49,003 INFO L225 Difference]: With dead ends: 27240 [2020-10-26 22:40:49,004 INFO L226 Difference]: Without dead ends: 15914 [2020-10-26 22:40:49,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:40:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15914 states. [2020-10-26 22:40:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15914 to 15587. [2020-10-26 22:40:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15587 states. [2020-10-26 22:40:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15587 states to 15587 states and 18721 transitions. [2020-10-26 22:40:49,405 INFO L78 Accepts]: Start accepts. Automaton has 15587 states and 18721 transitions. Word has length 325 [2020-10-26 22:40:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:49,406 INFO L481 AbstractCegarLoop]: Abstraction has 15587 states and 18721 transitions. [2020-10-26 22:40:49,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:40:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 15587 states and 18721 transitions. [2020-10-26 22:40:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-26 22:40:49,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:49,420 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:49,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:40:49,420 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:49,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1508809859, now seen corresponding path program 1 times [2020-10-26 22:40:49,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:49,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174343327] [2020-10-26 22:40:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:54,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-26 22:40:54,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:40:54,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-26 22:40:54,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 22:40:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:40:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 296 [2020-10-26 22:40:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:54,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:54,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:40:54,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:40:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:55,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:55,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-26 22:40:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:40:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:55,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:55,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:40:55,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 22:40:55,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:40:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:55,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-26 22:40:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:56,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:56,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:40:56,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:56,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-26 22:40:56,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:40:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 230 proven. 159 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 22:40:56,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174343327] [2020-10-26 22:40:56,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:56,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:40:56,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108192008] [2020-10-26 22:40:56,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:40:56,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:56,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:40:56,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:40:56,439 INFO L87 Difference]: Start difference. First operand 15587 states and 18721 transitions. Second operand 11 states. [2020-10-26 22:40:56,664 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-26 22:40:58,857 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-26 22:40:59,907 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-26 22:41:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:03,189 INFO L93 Difference]: Finished difference Result 31161 states and 38264 transitions. [2020-10-26 22:41:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 22:41:03,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 355 [2020-10-26 22:41:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:03,251 INFO L225 Difference]: With dead ends: 31161 [2020-10-26 22:41:03,251 INFO L226 Difference]: Without dead ends: 15768 [2020-10-26 22:41:03,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-26 22:41:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15768 states. [2020-10-26 22:41:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15768 to 15606. [2020-10-26 22:41:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15606 states. [2020-10-26 22:41:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15606 states to 15606 states and 18760 transitions. [2020-10-26 22:41:03,647 INFO L78 Accepts]: Start accepts. Automaton has 15606 states and 18760 transitions. Word has length 355 [2020-10-26 22:41:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:03,647 INFO L481 AbstractCegarLoop]: Abstraction has 15606 states and 18760 transitions. [2020-10-26 22:41:03,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:41:03,648 INFO L276 IsEmpty]: Start isEmpty. Operand 15606 states and 18760 transitions. [2020-10-26 22:41:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-26 22:41:03,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:03,660 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:03,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:41:03,660 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:03,661 INFO L82 PathProgramCache]: Analyzing trace with hash 422686106, now seen corresponding path program 1 times [2020-10-26 22:41:03,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:03,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973783486] [2020-10-26 22:41:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:04,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:08,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-26 22:41:08,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 22:41:08,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:41:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:41:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-26 22:41:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:08,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:08,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:08,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:41:08,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:08,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:41:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:41:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:41:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-26 22:41:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:41:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-26 22:41:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:41:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 143 proven. 13 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-26 22:41:09,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973783486] [2020-10-26 22:41:09,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:09,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:41:09,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124538465] [2020-10-26 22:41:09,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:41:09,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:09,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:41:09,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:41:09,882 INFO L87 Difference]: Start difference. First operand 15606 states and 18760 transitions. Second operand 9 states. [2020-10-26 22:41:10,103 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-26 22:41:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:15,332 INFO L93 Difference]: Finished difference Result 31069 states and 37497 transitions. [2020-10-26 22:41:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:41:15,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 364 [2020-10-26 22:41:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:15,392 INFO L225 Difference]: With dead ends: 31069 [2020-10-26 22:41:15,392 INFO L226 Difference]: Without dead ends: 18137 [2020-10-26 22:41:15,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-26 22:41:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2020-10-26 22:41:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 17712. [2020-10-26 22:41:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17712 states. [2020-10-26 22:41:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17712 states to 17712 states and 21216 transitions. [2020-10-26 22:41:15,839 INFO L78 Accepts]: Start accepts. Automaton has 17712 states and 21216 transitions. Word has length 364 [2020-10-26 22:41:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:15,840 INFO L481 AbstractCegarLoop]: Abstraction has 17712 states and 21216 transitions. [2020-10-26 22:41:15,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:41:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 17712 states and 21216 transitions. [2020-10-26 22:41:15,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-26 22:41:15,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:15,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:41:15,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:41:15,855 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:15,855 INFO L82 PathProgramCache]: Analyzing trace with hash -214265282, now seen corresponding path program 1 times [2020-10-26 22:41:15,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:15,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507728301] [2020-10-26 22:41:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:19,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:19,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-26 22:41:19,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:19,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3586 [2020-10-26 22:41:19,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:41:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:41:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 372 [2020-10-26 22:41:19,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:19,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:19,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:41:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:19,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:41:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:20,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:20,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:20,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:41:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 22:41:20,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:41:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:41:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:41:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-26 22:41:20,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507728301] [2020-10-26 22:41:20,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:20,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:20,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930724738] [2020-10-26 22:41:20,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:41:20,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:20,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:41:20,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:41:20,610 INFO L87 Difference]: Start difference. First operand 17712 states and 21216 transitions. Second operand 8 states. [2020-10-26 22:41:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:26,008 INFO L93 Difference]: Finished difference Result 24886 states and 30598 transitions. [2020-10-26 22:41:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:41:26,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 365 [2020-10-26 22:41:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:26,097 INFO L225 Difference]: With dead ends: 24886 [2020-10-26 22:41:26,097 INFO L226 Difference]: Without dead ends: 24883 [2020-10-26 22:41:26,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:41:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24883 states. [2020-10-26 22:41:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24883 to 24056. [2020-10-26 22:41:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24056 states. [2020-10-26 22:41:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24056 states to 24056 states and 28804 transitions. [2020-10-26 22:41:26,732 INFO L78 Accepts]: Start accepts. Automaton has 24056 states and 28804 transitions. Word has length 365 [2020-10-26 22:41:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:26,733 INFO L481 AbstractCegarLoop]: Abstraction has 24056 states and 28804 transitions. [2020-10-26 22:41:26,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:41:26,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24056 states and 28804 transitions. [2020-10-26 22:41:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-26 22:41:26,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:26,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:26,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:41:26,752 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash 482660546, now seen corresponding path program 1 times [2020-10-26 22:41:26,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:26,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761613354] [2020-10-26 22:41:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:28,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:28,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-26 22:41:28,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1908 [2020-10-26 22:41:28,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:41:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:41:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:28,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:41:28,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:28,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 22:41:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:29,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:29,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:41:29,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:29,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 22:41:29,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:41:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:41:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:41:29,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 22:41:29,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761613354] [2020-10-26 22:41:29,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:29,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:29,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015188578] [2020-10-26 22:41:29,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:29,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:29,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:29,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:29,500 INFO L87 Difference]: Start difference. First operand 24056 states and 28804 transitions. Second operand 7 states. [2020-10-26 22:41:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:34,121 INFO L93 Difference]: Finished difference Result 46593 states and 55792 transitions. [2020-10-26 22:41:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:41:34,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-26 22:41:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:34,200 INFO L225 Difference]: With dead ends: 46593 [2020-10-26 22:41:34,201 INFO L226 Difference]: Without dead ends: 24865 [2020-10-26 22:41:34,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24865 states. [2020-10-26 22:41:34,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24865 to 24618. [2020-10-26 22:41:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24618 states. [2020-10-26 22:41:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24618 states to 24618 states and 29232 transitions. [2020-10-26 22:41:34,956 INFO L78 Accepts]: Start accepts. Automaton has 24618 states and 29232 transitions. Word has length 394 [2020-10-26 22:41:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:34,957 INFO L481 AbstractCegarLoop]: Abstraction has 24618 states and 29232 transitions. [2020-10-26 22:41:34,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 24618 states and 29232 transitions. [2020-10-26 22:41:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-26 22:41:34,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:34,977 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:34,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:41:34,977 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1514740687, now seen corresponding path program 1 times [2020-10-26 22:41:34,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:34,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860123118] [2020-10-26 22:41:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:40,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:40,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-26 22:41:40,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 22:41:40,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:41:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:41:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:40,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:40,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:40,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:40,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:41:40,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:41:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:40,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:41:40,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:41:40,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:41:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:41:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:40,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 216 proven. 73 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:41:40,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860123118] [2020-10-26 22:41:40,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:40,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:40,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678050469] [2020-10-26 22:41:40,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:40,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:40,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:40,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:40,876 INFO L87 Difference]: Start difference. First operand 24618 states and 29232 transitions. Second operand 7 states. [2020-10-26 22:41:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:44,768 INFO L93 Difference]: Finished difference Result 46950 states and 55841 transitions. [2020-10-26 22:41:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:41:44,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-26 22:41:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:44,845 INFO L225 Difference]: With dead ends: 46950 [2020-10-26 22:41:44,845 INFO L226 Difference]: Without dead ends: 26382 [2020-10-26 22:41:44,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:41:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26382 states. [2020-10-26 22:41:45,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26382 to 24992. [2020-10-26 22:41:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24992 states. [2020-10-26 22:41:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24992 states to 24992 states and 29587 transitions. [2020-10-26 22:41:45,427 INFO L78 Accepts]: Start accepts. Automaton has 24992 states and 29587 transitions. Word has length 411 [2020-10-26 22:41:45,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:45,428 INFO L481 AbstractCegarLoop]: Abstraction has 24992 states and 29587 transitions. [2020-10-26 22:41:45,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 24992 states and 29587 transitions. [2020-10-26 22:41:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-26 22:41:45,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:45,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:45,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:41:45,444 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash 190228318, now seen corresponding path program 1 times [2020-10-26 22:41:45,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:45,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134219438] [2020-10-26 22:41:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:45,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:45,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:45,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-26 22:41:45,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-26 22:41:45,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:41:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:41:45,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:46,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:46,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:41:46,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:41:46,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:41:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 22:41:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:41:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:41:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:41:46,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 22:41:46,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:41:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:41:47,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134219438] [2020-10-26 22:41:47,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:47,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:47,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461665438] [2020-10-26 22:41:47,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:47,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:47,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:47,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:47,018 INFO L87 Difference]: Start difference. First operand 24992 states and 29587 transitions. Second operand 7 states. [2020-10-26 22:41:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:51,680 INFO L93 Difference]: Finished difference Result 50675 states and 60299 transitions. [2020-10-26 22:41:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:41:51,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-26 22:41:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:51,742 INFO L225 Difference]: With dead ends: 50675 [2020-10-26 22:41:51,742 INFO L226 Difference]: Without dead ends: 29729 [2020-10-26 22:41:51,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29729 states. [2020-10-26 22:41:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29729 to 28862. [2020-10-26 22:41:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28862 states. [2020-10-26 22:41:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28862 states to 28862 states and 33923 transitions. [2020-10-26 22:41:52,405 INFO L78 Accepts]: Start accepts. Automaton has 28862 states and 33923 transitions. Word has length 412 [2020-10-26 22:41:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:52,406 INFO L481 AbstractCegarLoop]: Abstraction has 28862 states and 33923 transitions. [2020-10-26 22:41:52,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 28862 states and 33923 transitions. [2020-10-26 22:41:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-26 22:41:52,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:52,425 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:52,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:41:52,425 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:52,425 INFO L82 PathProgramCache]: Analyzing trace with hash -765254562, now seen corresponding path program 1 times [2020-10-26 22:41:52,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:52,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522980484] [2020-10-26 22:41:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:54,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:41:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:54,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:54,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:54,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:41:54,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:41:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 22:41:55,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:55,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:55,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:41:55,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 22:41:55,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:41:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:41:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-26 22:41:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:55,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:55,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:55,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:41:55,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:55,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:41:55,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 22:41:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-26 22:41:55,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522980484] [2020-10-26 22:41:55,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:55,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:41:55,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723117002] [2020-10-26 22:41:55,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:41:55,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:55,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:41:55,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:41:55,421 INFO L87 Difference]: Start difference. First operand 28862 states and 33923 transitions. Second operand 5 states. [2020-10-26 22:41:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:57,359 INFO L93 Difference]: Finished difference Result 53928 states and 63601 transitions. [2020-10-26 22:41:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:41:57,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-10-26 22:41:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:57,439 INFO L225 Difference]: With dead ends: 53928 [2020-10-26 22:41:57,439 INFO L226 Difference]: Without dead ends: 28734 [2020-10-26 22:41:57,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:41:57,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28734 states. [2020-10-26 22:41:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28734 to 28644. [2020-10-26 22:41:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28644 states. [2020-10-26 22:41:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28644 states to 28644 states and 33639 transitions. [2020-10-26 22:41:58,222 INFO L78 Accepts]: Start accepts. Automaton has 28644 states and 33639 transitions. Word has length 425 [2020-10-26 22:41:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:58,222 INFO L481 AbstractCegarLoop]: Abstraction has 28644 states and 33639 transitions. [2020-10-26 22:41:58,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:41:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 28644 states and 33639 transitions. [2020-10-26 22:41:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-26 22:41:58,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:58,236 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 22:41:58,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:41:58,237 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 47068908, now seen corresponding path program 1 times [2020-10-26 22:41:58,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:58,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311875047] [2020-10-26 22:41:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:42:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:42:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:00,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:00,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:00,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:00,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:42:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:00,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:00,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:42:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:00,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:00,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:42:00,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:00,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 22:42:00,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:42:00,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:42:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:01,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:42:01,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 22:42:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:42:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-26 22:42:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:01,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:01,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:42:01,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 22:42:01,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 22:42:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 373 proven. 79 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-26 22:42:01,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311875047] [2020-10-26 22:42:01,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:01,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:42:01,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947192082] [2020-10-26 22:42:01,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:42:01,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:42:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:42:01,234 INFO L87 Difference]: Start difference. First operand 28644 states and 33639 transitions. Second operand 7 states. [2020-10-26 22:42:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:05,863 INFO L93 Difference]: Finished difference Result 57637 states and 67627 transitions. [2020-10-26 22:42:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:42:05,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-26 22:42:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:05,917 INFO L225 Difference]: With dead ends: 57637 [2020-10-26 22:42:05,917 INFO L226 Difference]: Without dead ends: 29377 [2020-10-26 22:42:05,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:42:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29377 states. [2020-10-26 22:42:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29377 to 29243. [2020-10-26 22:42:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29243 states. [2020-10-26 22:42:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29243 states to 29243 states and 33573 transitions. [2020-10-26 22:42:06,439 INFO L78 Accepts]: Start accepts. Automaton has 29243 states and 33573 transitions. Word has length 429 [2020-10-26 22:42:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:06,440 INFO L481 AbstractCegarLoop]: Abstraction has 29243 states and 33573 transitions. [2020-10-26 22:42:06,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:42:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 29243 states and 33573 transitions. [2020-10-26 22:42:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-26 22:42:06,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:06,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:42:06,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:42:06,457 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:06,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1752321580, now seen corresponding path program 1 times [2020-10-26 22:42:06,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:06,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951905617] [2020-10-26 22:42:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:07,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:07,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-26 22:42:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:42:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-26 22:42:07,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-26 22:42:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 22:42:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:07,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:42:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:08,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-26 22:42:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:42:08,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 22:42:08,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:42:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-26 22:42:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951905617] [2020-10-26 22:42:08,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:08,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:42:08,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362324007] [2020-10-26 22:42:08,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:42:08,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:08,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:42:08,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:42:08,265 INFO L87 Difference]: Start difference. First operand 29243 states and 33573 transitions. Second operand 5 states. [2020-10-26 22:42:10,042 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:42:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:10,932 INFO L93 Difference]: Finished difference Result 53824 states and 62044 transitions. [2020-10-26 22:42:10,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:42:10,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 441 [2020-10-26 22:42:10,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:11,000 INFO L225 Difference]: With dead ends: 53824 [2020-10-26 22:42:11,000 INFO L226 Difference]: Without dead ends: 29359 [2020-10-26 22:42:11,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:42:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29359 states. [2020-10-26 22:42:11,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29359 to 29237. [2020-10-26 22:42:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29237 states. [2020-10-26 22:42:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29237 states to 29237 states and 33518 transitions. [2020-10-26 22:42:11,529 INFO L78 Accepts]: Start accepts. Automaton has 29237 states and 33518 transitions. Word has length 441 [2020-10-26 22:42:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:11,530 INFO L481 AbstractCegarLoop]: Abstraction has 29237 states and 33518 transitions. [2020-10-26 22:42:11,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:42:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 29237 states and 33518 transitions. [2020-10-26 22:42:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-26 22:42:11,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:11,541 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:42:11,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:42:11,541 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:11,542 INFO L82 PathProgramCache]: Analyzing trace with hash -213553237, now seen corresponding path program 1 times [2020-10-26 22:42:11,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:11,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096121323] [2020-10-26 22:42:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:14,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 22:42:14,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:14,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:14,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:14,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:42:14,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:14,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:14,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:42:14,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:42:14,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:14,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:42:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:14,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:14,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:42:14,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:14,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:42:14,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-26 22:42:14,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 22:42:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:14,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 22:42:14,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-26 22:42:14,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 22:42:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 368 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-26 22:42:14,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096121323] [2020-10-26 22:42:14,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:14,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:42:14,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029440535] [2020-10-26 22:42:14,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:42:14,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:14,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:42:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:42:14,788 INFO L87 Difference]: Start difference. First operand 29237 states and 33518 transitions. Second operand 7 states. [2020-10-26 22:42:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:20,515 INFO L93 Difference]: Finished difference Result 56618 states and 65124 transitions. [2020-10-26 22:42:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:42:20,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-26 22:42:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:20,597 INFO L225 Difference]: With dead ends: 56618 [2020-10-26 22:42:20,597 INFO L226 Difference]: Without dead ends: 30829 [2020-10-26 22:42:20,631 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 [2020-10-26 22:42:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30829 states. [2020-10-26 22:42:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30829 to 29945. [2020-10-26 22:42:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29945 states. [2020-10-26 22:42:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29945 states to 29945 states and 33981 transitions. [2020-10-26 22:42:21,134 INFO L78 Accepts]: Start accepts. Automaton has 29945 states and 33981 transitions. Word has length 454 [2020-10-26 22:42:21,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:21,135 INFO L481 AbstractCegarLoop]: Abstraction has 29945 states and 33981 transitions. [2020-10-26 22:42:21,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:42:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 29945 states and 33981 transitions. [2020-10-26 22:42:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-26 22:42:21,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:21,146 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:42:21,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:42:21,147 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:21,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1850408660, now seen corresponding path program 1 times [2020-10-26 22:42:21,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:21,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774933847] [2020-10-26 22:42:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 22:42:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:42:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:26,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:26,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:42:26,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:42:26,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:26,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:42:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:26,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:26,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:42:26,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 22:42:26,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:42:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:42:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:27,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:27,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:42:27,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:42:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-26 22:42:27,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 22:42:27,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:42:28,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774933847] [2020-10-26 22:42:28,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:28,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:42:28,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41051384] [2020-10-26 22:42:28,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:42:28,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:28,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:42:28,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:42:28,312 INFO L87 Difference]: Start difference. First operand 29945 states and 33981 transitions. Second operand 7 states. [2020-10-26 22:42:28,537 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 22:42:30,009 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-26 22:42:30,164 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:42:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:31,630 INFO L93 Difference]: Finished difference Result 55231 states and 62877 transitions. [2020-10-26 22:42:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:42:31,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-10-26 22:42:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:31,694 INFO L225 Difference]: With dead ends: 55231 [2020-10-26 22:42:31,694 INFO L226 Difference]: Without dead ends: 30084 [2020-10-26 22:42:31,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:42:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30084 states. [2020-10-26 22:42:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30084 to 29943. [2020-10-26 22:42:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29943 states. [2020-10-26 22:42:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 33918 transitions. [2020-10-26 22:42:32,187 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 33918 transitions. Word has length 460 [2020-10-26 22:42:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:32,187 INFO L481 AbstractCegarLoop]: Abstraction has 29943 states and 33918 transitions. [2020-10-26 22:42:32,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:42:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 33918 transitions. [2020-10-26 22:42:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-26 22:42:32,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:32,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:42:32,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:42:32,209 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:32,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:32,209 INFO L82 PathProgramCache]: Analyzing trace with hash 630254365, now seen corresponding path program 1 times [2020-10-26 22:42:32,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:32,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955784666] [2020-10-26 22:42:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:32,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:32,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-26 22:42:32,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:32,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-26 22:42:32,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 452 [2020-10-26 22:42:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 22:42:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:33,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:33,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:42:33,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 22:42:33,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:42:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:33,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-26 22:42:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:33,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 22:42:33,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-10-26 22:42:33,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955784666] [2020-10-26 22:42:33,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:33,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:42:33,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634708546] [2020-10-26 22:42:33,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:42:33,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:33,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:42:33,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:42:33,559 INFO L87 Difference]: Start difference. First operand 29943 states and 33918 transitions. Second operand 5 states. [2020-10-26 22:42:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:36,504 INFO L93 Difference]: Finished difference Result 32894 states and 37291 transitions. [2020-10-26 22:42:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:42:36,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 494 [2020-10-26 22:42:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:36,566 INFO L225 Difference]: With dead ends: 32894 [2020-10-26 22:42:36,566 INFO L226 Difference]: Without dead ends: 32891 [2020-10-26 22:42:36,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:42:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32891 states. [2020-10-26 22:42:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32891 to 31075. [2020-10-26 22:42:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31075 states. [2020-10-26 22:42:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31075 states to 31075 states and 35261 transitions. [2020-10-26 22:42:37,235 INFO L78 Accepts]: Start accepts. Automaton has 31075 states and 35261 transitions. Word has length 494 [2020-10-26 22:42:37,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:37,236 INFO L481 AbstractCegarLoop]: Abstraction has 31075 states and 35261 transitions. [2020-10-26 22:42:37,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:42:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 31075 states and 35261 transitions. [2020-10-26 22:42:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-26 22:42:37,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:37,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 22:42:37,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 22:42:37,258 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:37,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:37,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1608801788, now seen corresponding path program 1 times [2020-10-26 22:42:37,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:37,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136046800] [2020-10-26 22:42:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-26 22:42:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:42:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-10-26 22:42:40,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:42:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:42:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-26 22:42:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:40,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:42:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:40,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:40,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:42:40,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 22:42:40,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:42:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:40,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:42:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:41,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:42:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:41,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:42:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:41,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:41,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:42:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-26 22:42:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:41,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:41,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-26 22:42:41,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 22:42:41,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:41,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-26 22:42:41,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:41,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 198 proven. 492 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 22:42:41,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136046800] [2020-10-26 22:42:41,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:41,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:42:41,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925258379] [2020-10-26 22:42:41,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:42:41,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:41,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:42:41,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:42:41,788 INFO L87 Difference]: Start difference. First operand 31075 states and 35261 transitions. Second operand 10 states. [2020-10-26 22:42:42,004 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69