/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/Problem14_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:29:56,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:29:56,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:29:56,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:29:56,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:29:56,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:29:56,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:29:56,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:29:56,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:29:56,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:29:56,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:29:56,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:29:56,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:29:56,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:29:56,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:29:56,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:29:56,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:29:56,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:29:56,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:29:56,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:29:56,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:29:56,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:29:56,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:29:56,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:29:56,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:29:56,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:29:56,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:29:56,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:29:56,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:29:56,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:29:56,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:29:56,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:29:56,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:29:56,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:29:56,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:29:56,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:29:56,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:29:56,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:29:56,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:29:56,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:29:56,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:29:56,426 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 23:29:56,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:29:56,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:29:56,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:29:56,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:29:56,457 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:29:56,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:29:56,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:29:56,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:29:56,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:29:56,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:29:56,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:29:56,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:29:56,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:29:56,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:29:56,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:29:56,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:29:56,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:29:56,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:29:56,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:29:56,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:29:56,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:29:56,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:29:56,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:29:56,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:29:56,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:29:56,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:29:56,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:29:56,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:29:56,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:29:56,463 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:29:56,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:29:56,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:29:56,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:29:56,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:29:56,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:29:56,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label42.c [2020-10-26 23:29:56,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4db6cb954/960837e2d1a4468e81e0d904f7072acc/FLAGd51dee5e1 [2020-10-26 23:29:57,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:29:57,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label42.c [2020-10-26 23:29:57,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4db6cb954/960837e2d1a4468e81e0d904f7072acc/FLAGd51dee5e1 [2020-10-26 23:29:57,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4db6cb954/960837e2d1a4468e81e0d904f7072acc [2020-10-26 23:29:57,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:29:57,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:29:57,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:29:57,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:29:57,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:29:57,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:29:57" (1/1) ... [2020-10-26 23:29:57,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e302793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:57, skipping insertion in model container [2020-10-26 23:29:57,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:29:57" (1/1) ... [2020-10-26 23:29:57,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:29:58,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:29:58,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:29:58,584 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:29:58,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:29:58,771 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:29:58,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58 WrapperNode [2020-10-26 23:29:58,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:29:58,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:29:58,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:29:58,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:29:58,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (1/1) ... [2020-10-26 23:29:58,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (1/1) ... [2020-10-26 23:29:58,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (1/1) ... [2020-10-26 23:29:58,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (1/1) ... [2020-10-26 23:29:58,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (1/1) ... [2020-10-26 23:29:58,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (1/1) ... [2020-10-26 23:29:58,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (1/1) ... [2020-10-26 23:29:58,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:29:58,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:29:58,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:29:58,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:29:58,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (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 23:29:59,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:29:59,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:29:59,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:29:59,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:29:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:29:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:29:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:29:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:29:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:29:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:29:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:29:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:29:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:29:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:30:01,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:30:01,133 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:30:01,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:01 BoogieIcfgContainer [2020-10-26 23:30:01,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:30:01,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:30:01,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:30:01,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:30:01,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:29:57" (1/3) ... [2020-10-26 23:30:01,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683afa96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:01, skipping insertion in model container [2020-10-26 23:30:01,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:58" (2/3) ... [2020-10-26 23:30:01,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683afa96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:01, skipping insertion in model container [2020-10-26 23:30:01,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:01" (3/3) ... [2020-10-26 23:30:01,144 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label42.c [2020-10-26 23:30:01,157 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:30:01,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:30:01,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:30:01,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:30:01,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:30:01,207 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:30:01,207 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:30:01,207 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:30:01,207 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:30:01,207 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:30:01,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:30:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:30:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-26 23:30:01,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:01,242 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] [2020-10-26 23:30:01,243 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:01,252 INFO L82 PathProgramCache]: Analyzing trace with hash 253389246, now seen corresponding path program 1 times [2020-10-26 23:30:01,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:01,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788920930] [2020-10-26 23:30:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:02,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 23:30:02,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-26 23:30:02,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 23:30:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 23:30:02,344 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:30:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:02,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:02,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:30:02,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:02,413 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 23:30:02,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788920930] [2020-10-26 23:30:02,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:02,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:30:02,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663677723] [2020-10-26 23:30:02,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:30:02,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:02,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:30:02,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:30:02,442 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:30:02,597 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:30:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:06,342 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:30:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:30:06,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-26 23:30:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:06,384 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:30:06,384 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:30:06,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:30:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:30:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:30:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:30:06,519 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 49 [2020-10-26 23:30:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:06,520 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:30:06,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:30:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:30:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-26 23:30:06,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:06,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:06,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:30:06,529 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1568206039, now seen corresponding path program 1 times [2020-10-26 23:30:06,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:06,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723042882] [2020-10-26 23:30:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:07,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-26 23:30:07,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-26 23:30:07,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:30:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:07,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:07,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:30:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:30:08,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 23:30:08,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:30:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:08,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723042882] [2020-10-26 23:30:08,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:08,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:30:08,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114661386] [2020-10-26 23:30:08,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:08,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:08,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:08,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:08,381 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 8 states. [2020-10-26 23:30:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:11,122 INFO L93 Difference]: Finished difference Result 1322 states and 2176 transitions. [2020-10-26 23:30:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:30:11,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-10-26 23:30:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:11,132 INFO L225 Difference]: With dead ends: 1322 [2020-10-26 23:30:11,132 INFO L226 Difference]: Without dead ends: 769 [2020-10-26 23:30:11,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:11,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-26 23:30:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 567. [2020-10-26 23:30:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-26 23:30:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 820 transitions. [2020-10-26 23:30:11,175 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 820 transitions. Word has length 135 [2020-10-26 23:30:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:11,176 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 820 transitions. [2020-10-26 23:30:11,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 820 transitions. [2020-10-26 23:30:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-26 23:30:11,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:11,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:11,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:30:11,188 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash -851356987, now seen corresponding path program 1 times [2020-10-26 23:30:11,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:11,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548173173] [2020-10-26 23:30:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:11,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 23:30:12,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:12,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-26 23:30:12,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:30:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:13,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:30:13,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:13,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:30:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:30:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:30:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:13,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548173173] [2020-10-26 23:30:13,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:13,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:30:13,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336405042] [2020-10-26 23:30:13,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:13,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:13,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:13,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:13,482 INFO L87 Difference]: Start difference. First operand 567 states and 820 transitions. Second operand 7 states. [2020-10-26 23:30:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:16,065 INFO L93 Difference]: Finished difference Result 1334 states and 1924 transitions. [2020-10-26 23:30:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:16,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-26 23:30:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:16,072 INFO L225 Difference]: With dead ends: 1334 [2020-10-26 23:30:16,072 INFO L226 Difference]: Without dead ends: 773 [2020-10-26 23:30:16,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 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 23:30:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-26 23:30:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 751. [2020-10-26 23:30:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-26 23:30:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1019 transitions. [2020-10-26 23:30:16,106 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1019 transitions. Word has length 144 [2020-10-26 23:30:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:16,107 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 1019 transitions. [2020-10-26 23:30:16,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1019 transitions. [2020-10-26 23:30:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 23:30:16,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:16,112 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:30:16,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:30:16,113 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:16,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1516421584, now seen corresponding path program 1 times [2020-10-26 23:30:16,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:16,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874272785] [2020-10-26 23:30:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:16,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:16,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:19,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 23:30:19,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3180 [2020-10-26 23:30:19,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:30:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-26 23:30:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:19,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:19,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:19,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:30:19,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:19,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:19,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:30:19,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:19,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:30:19,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:19,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:19,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:19,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:30:19,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:19,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:30:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:20,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:30:20,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:20,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:30:20,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:30:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:30:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:30:20,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874272785] [2020-10-26 23:30:20,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:20,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:20,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43496293] [2020-10-26 23:30:20,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:20,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:20,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:20,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:20,383 INFO L87 Difference]: Start difference. First operand 751 states and 1019 transitions. Second operand 8 states. [2020-10-26 23:30:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:23,075 INFO L93 Difference]: Finished difference Result 1743 states and 2442 transitions. [2020-10-26 23:30:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:30:23,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-10-26 23:30:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:23,084 INFO L225 Difference]: With dead ends: 1743 [2020-10-26 23:30:23,085 INFO L226 Difference]: Without dead ends: 1180 [2020-10-26 23:30:23,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:30:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-26 23:30:23,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1127. [2020-10-26 23:30:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-10-26 23:30:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1440 transitions. [2020-10-26 23:30:23,136 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1440 transitions. Word has length 228 [2020-10-26 23:30:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:23,137 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 1440 transitions. [2020-10-26 23:30:23,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1440 transitions. [2020-10-26 23:30:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-26 23:30:23,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:23,142 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:30:23,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:30:23,143 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:23,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:23,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1475828994, now seen corresponding path program 1 times [2020-10-26 23:30:23,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:23,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715204833] [2020-10-26 23:30:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-26 23:30:28,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:30:28,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:30:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-26 23:30:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:28,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:30:28,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:28,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:28,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-26 23:30:28,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:30:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:28,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:30:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:30:28,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 23:30:28,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:30:28,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:30:29,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715204833] [2020-10-26 23:30:29,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:29,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:29,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570518503] [2020-10-26 23:30:29,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:29,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:29,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:29,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:29,119 INFO L87 Difference]: Start difference. First operand 1127 states and 1440 transitions. Second operand 8 states. [2020-10-26 23:30:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:31,753 INFO L93 Difference]: Finished difference Result 2276 states and 2990 transitions. [2020-10-26 23:30:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:31,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 253 [2020-10-26 23:30:31,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:31,764 INFO L225 Difference]: With dead ends: 2276 [2020-10-26 23:30:31,764 INFO L226 Difference]: Without dead ends: 1337 [2020-10-26 23:30:31,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-26 23:30:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1313. [2020-10-26 23:30:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-10-26 23:30:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1683 transitions. [2020-10-26 23:30:31,815 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1683 transitions. Word has length 253 [2020-10-26 23:30:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:31,816 INFO L481 AbstractCegarLoop]: Abstraction has 1313 states and 1683 transitions. [2020-10-26 23:30:31,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1683 transitions. [2020-10-26 23:30:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-26 23:30:31,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:31,825 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:31,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:30:31,825 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:31,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1151946947, now seen corresponding path program 1 times [2020-10-26 23:30:31,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:31,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791835402] [2020-10-26 23:30:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:32,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-26 23:30:36,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:30:36,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:30:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:37,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:37,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:37,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:30:37,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:37,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:37,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:37,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:37,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:37,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:30:37,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:30:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:37,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:30:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:37,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:37,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:30:37,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:30:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-26 23:30:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:37,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:30:37,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:37,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:30:37,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:30:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 123 proven. 185 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:30:38,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791835402] [2020-10-26 23:30:38,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:38,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:38,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169613839] [2020-10-26 23:30:38,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:38,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:38,133 INFO L87 Difference]: Start difference. First operand 1313 states and 1683 transitions. Second operand 7 states. [2020-10-26 23:30:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:40,511 INFO L93 Difference]: Finished difference Result 3202 states and 4223 transitions. [2020-10-26 23:30:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:30:40,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2020-10-26 23:30:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:40,526 INFO L225 Difference]: With dead ends: 3202 [2020-10-26 23:30:40,526 INFO L226 Difference]: Without dead ends: 2077 [2020-10-26 23:30:40,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-26 23:30:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 1883. [2020-10-26 23:30:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-26 23:30:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2354 transitions. [2020-10-26 23:30:40,597 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2354 transitions. Word has length 423 [2020-10-26 23:30:40,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:40,597 INFO L481 AbstractCegarLoop]: Abstraction has 1883 states and 2354 transitions. [2020-10-26 23:30:40,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:40,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2354 transitions. [2020-10-26 23:30:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-26 23:30:40,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:40,611 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:30:40,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:30:40,612 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:40,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:40,612 INFO L82 PathProgramCache]: Analyzing trace with hash 343009064, now seen corresponding path program 1 times [2020-10-26 23:30:40,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:40,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873581170] [2020-10-26 23:30:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:44,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:45,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:45,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:45,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-26 23:30:45,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 23:30:45,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:30:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:30:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:45,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:45,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:45,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:45,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:45,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:45,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:30:45,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:30:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:30:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:30:45,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:30:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:30:46,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:30:46,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:30:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:30:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:46,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:30:46,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:30:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-26 23:30:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:30:46,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:30:46,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:46,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:30:46,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 253 proven. 215 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-26 23:30:47,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873581170] [2020-10-26 23:30:47,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:47,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:47,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841729865] [2020-10-26 23:30:47,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:47,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:47,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:47,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:47,045 INFO L87 Difference]: Start difference. First operand 1883 states and 2354 transitions. Second operand 7 states. [2020-10-26 23:30:47,581 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 23:30:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:49,297 INFO L93 Difference]: Finished difference Result 3488 states and 4454 transitions. [2020-10-26 23:30:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:49,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 531 [2020-10-26 23:30:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:49,307 INFO L225 Difference]: With dead ends: 3488 [2020-10-26 23:30:49,307 INFO L226 Difference]: Without dead ends: 1891 [2020-10-26 23:30:49,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-10-26 23:30:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1873. [2020-10-26 23:30:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-10-26 23:30:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2058 transitions. [2020-10-26 23:30:49,369 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2058 transitions. Word has length 531 [2020-10-26 23:30:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:49,370 INFO L481 AbstractCegarLoop]: Abstraction has 1873 states and 2058 transitions. [2020-10-26 23:30:49,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2058 transitions. [2020-10-26 23:30:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-26 23:30:49,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:49,392 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:49,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:30:49,392 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1616662621, now seen corresponding path program 1 times [2020-10-26 23:30:49,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:49,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814793101] [2020-10-26 23:30:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:49,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-26 23:30:54,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:30:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 294 [2020-10-26 23:30:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:54,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:54,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:30:54,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:54,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:54,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:30:54,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:55,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:30:55,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:30:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-26 23:30:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-26 23:30:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:30:55,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:30:55,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:30:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 753 proven. 170 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-26 23:30:55,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814793101] [2020-10-26 23:30:55,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:55,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:55,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201221555] [2020-10-26 23:30:55,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:55,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:55,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:55,875 INFO L87 Difference]: Start difference. First operand 1873 states and 2058 transitions. Second operand 8 states. [2020-10-26 23:30:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:58,106 INFO L93 Difference]: Finished difference Result 4156 states and 4687 transitions. [2020-10-26 23:30:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:30:58,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 643 [2020-10-26 23:30:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:58,123 INFO L225 Difference]: With dead ends: 4156 [2020-10-26 23:30:58,124 INFO L226 Difference]: Without dead ends: 2655 [2020-10-26 23:30:58,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:30:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2020-10-26 23:30:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2621. [2020-10-26 23:30:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-10-26 23:30:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 2877 transitions. [2020-10-26 23:30:58,203 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 2877 transitions. Word has length 643 [2020-10-26 23:30:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:58,205 INFO L481 AbstractCegarLoop]: Abstraction has 2621 states and 2877 transitions. [2020-10-26 23:30:58,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 2877 transitions. [2020-10-26 23:30:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-26 23:30:58,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:58,215 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2020-10-26 23:30:58,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:30:58,215 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:58,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1185003222, now seen corresponding path program 1 times [2020-10-26 23:30:58,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:58,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369878455] [2020-10-26 23:30:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 798 [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:31:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:31:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:03,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:31:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:03,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:31:03,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:31:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:03,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:31:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:31:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:04,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:31:04,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:31:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:31:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:04,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:31:04,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:04,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:04,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:04,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2020-10-26 23:31:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:04,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:31:04,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 703 proven. 508 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2020-10-26 23:31:05,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369878455] [2020-10-26 23:31:05,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:05,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:05,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469593310] [2020-10-26 23:31:05,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:05,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:05,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:05,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:05,062 INFO L87 Difference]: Start difference. First operand 2621 states and 2877 transitions. Second operand 8 states. [2020-10-26 23:31:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:07,203 INFO L93 Difference]: Finished difference Result 5266 states and 5822 transitions. [2020-10-26 23:31:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:31:07,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 776 [2020-10-26 23:31:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:07,218 INFO L225 Difference]: With dead ends: 5266 [2020-10-26 23:31:07,218 INFO L226 Difference]: Without dead ends: 3017 [2020-10-26 23:31:07,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:31:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-26 23:31:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2989. [2020-10-26 23:31:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2989 states. [2020-10-26 23:31:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3249 transitions. [2020-10-26 23:31:07,315 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3249 transitions. Word has length 776 [2020-10-26 23:31:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:07,316 INFO L481 AbstractCegarLoop]: Abstraction has 2989 states and 3249 transitions. [2020-10-26 23:31:07,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3249 transitions. [2020-10-26 23:31:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-10-26 23:31:07,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:07,329 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:31:07,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:31:07,330 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:07,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1929523362, now seen corresponding path program 1 times [2020-10-26 23:31:07,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:07,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144415681] [2020-10-26 23:31:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-26 23:31:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 23:31:12,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:31:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:31:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:12,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:12,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:12,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:12,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:31:12,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:31:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:12,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:31:12,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:12,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:31:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:13,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:31:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 23:31:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-26 23:31:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-10-26 23:31:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:13,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:31:13,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:13,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 488 proven. 299 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2020-10-26 23:31:13,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144415681] [2020-10-26 23:31:13,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:13,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:13,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916440] [2020-10-26 23:31:13,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:13,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:13,645 INFO L87 Difference]: Start difference. First operand 2989 states and 3249 transitions. Second operand 7 states. [2020-10-26 23:31:17,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:17,005 INFO L93 Difference]: Finished difference Result 6556 states and 7245 transitions. [2020-10-26 23:31:17,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:17,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 802 [2020-10-26 23:31:17,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:17,022 INFO L225 Difference]: With dead ends: 6556 [2020-10-26 23:31:17,023 INFO L226 Difference]: Without dead ends: 3939 [2020-10-26 23:31:17,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 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 23:31:17,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2020-10-26 23:31:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3733. [2020-10-26 23:31:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2020-10-26 23:31:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 4105 transitions. [2020-10-26 23:31:17,140 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 4105 transitions. Word has length 802 [2020-10-26 23:31:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:17,141 INFO L481 AbstractCegarLoop]: Abstraction has 3733 states and 4105 transitions. [2020-10-26 23:31:17,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 4105 transitions. [2020-10-26 23:31:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-26 23:31:17,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:17,152 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:17,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:31:17,152 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash -67422952, now seen corresponding path program 1 times [2020-10-26 23:31:17,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:17,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606194993] [2020-10-26 23:31:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:31:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:22,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:22,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:22,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:22,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:22,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:31:22,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:23,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:23,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 23:31:23,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-26 23:31:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 760 proven. 85 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2020-10-26 23:31:23,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606194993] [2020-10-26 23:31:23,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:23,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:23,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716850286] [2020-10-26 23:31:23,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:23,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:23,548 INFO L87 Difference]: Start difference. First operand 3733 states and 4105 transitions. Second operand 7 states. [2020-10-26 23:31:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:25,915 INFO L93 Difference]: Finished difference Result 8222 states and 9246 transitions. [2020-10-26 23:31:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:25,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 809 [2020-10-26 23:31:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:25,941 INFO L225 Difference]: With dead ends: 8222 [2020-10-26 23:31:25,941 INFO L226 Difference]: Without dead ends: 4861 [2020-10-26 23:31:25,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2020-10-26 23:31:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 4663. [2020-10-26 23:31:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4663 states. [2020-10-26 23:31:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 5231 transitions. [2020-10-26 23:31:26,079 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 5231 transitions. Word has length 809 [2020-10-26 23:31:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:26,081 INFO L481 AbstractCegarLoop]: Abstraction has 4663 states and 5231 transitions. [2020-10-26 23:31:26,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 5231 transitions. [2020-10-26 23:31:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2020-10-26 23:31:26,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:26,095 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:26,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:31:26,095 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1441078387, now seen corresponding path program 1 times [2020-10-26 23:31:26,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:26,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144953474] [2020-10-26 23:31:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:31:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:31,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:31,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:31,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:31,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:31,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:31,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:31:31,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:31:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:31:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:31:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-26 23:31:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:32,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:31:32,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 626 proven. 148 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2020-10-26 23:31:32,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144953474] [2020-10-26 23:31:32,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:32,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:32,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164374465] [2020-10-26 23:31:32,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:32,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:32,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:32,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:32,416 INFO L87 Difference]: Start difference. First operand 4663 states and 5231 transitions. Second operand 7 states. [2020-10-26 23:31:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:34,670 INFO L93 Difference]: Finished difference Result 10078 states and 11518 transitions. [2020-10-26 23:31:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:34,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 885 [2020-10-26 23:31:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:34,706 INFO L225 Difference]: With dead ends: 10078 [2020-10-26 23:31:34,707 INFO L226 Difference]: Without dead ends: 5787 [2020-10-26 23:31:34,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2020-10-26 23:31:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5773. [2020-10-26 23:31:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-26 23:31:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 6400 transitions. [2020-10-26 23:31:34,866 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 6400 transitions. Word has length 885 [2020-10-26 23:31:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:34,868 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 6400 transitions. [2020-10-26 23:31:34,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:34,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 6400 transitions. [2020-10-26 23:31:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-26 23:31:34,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:34,882 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2020-10-26 23:31:34,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:31:34,883 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1653113551, now seen corresponding path program 1 times [2020-10-26 23:31:34,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:34,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885573106] [2020-10-26 23:31:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-10-26 23:31:40,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:40,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-26 23:31:40,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:31:40,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:31:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:31:40,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:40,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:31:40,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:31:40,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:40,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:31:40,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:31:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:31:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:31:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:31:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:41,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-26 23:31:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:41,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:41,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:31:41,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 660 proven. 332 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2020-10-26 23:31:42,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885573106] [2020-10-26 23:31:42,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:42,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:42,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757938040] [2020-10-26 23:31:42,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:42,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:42,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:42,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:42,300 INFO L87 Difference]: Start difference. First operand 5773 states and 6400 transitions. Second operand 8 states. [2020-10-26 23:31:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:44,824 INFO L93 Difference]: Finished difference Result 12106 states and 13444 transitions. [2020-10-26 23:31:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:31:44,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 903 [2020-10-26 23:31:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:44,849 INFO L225 Difference]: With dead ends: 12106 [2020-10-26 23:31:44,850 INFO L226 Difference]: Without dead ends: 6705 [2020-10-26 23:31:44,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:31:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2020-10-26 23:31:45,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 6691. [2020-10-26 23:31:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6691 states. [2020-10-26 23:31:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6691 states to 6691 states and 7345 transitions. [2020-10-26 23:31:45,022 INFO L78 Accepts]: Start accepts. Automaton has 6691 states and 7345 transitions. Word has length 903 [2020-10-26 23:31:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:45,023 INFO L481 AbstractCegarLoop]: Abstraction has 6691 states and 7345 transitions. [2020-10-26 23:31:45,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6691 states and 7345 transitions. [2020-10-26 23:31:45,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-26 23:31:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:45,042 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:45,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:31:45,042 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1909202127, now seen corresponding path program 1 times [2020-10-26 23:31:45,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:45,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579458557] [2020-10-26 23:31:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1006 [2020-10-26 23:31:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:31:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:31:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:31:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-26 23:31:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:50,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:50,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:50,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:50,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:50,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:50,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:50,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:50,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:31:50,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:31:50,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:31:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:31:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:51,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:51,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-26 23:31:51,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2020-10-26 23:31:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:31:51,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2630 backedges. 980 proven. 85 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2020-10-26 23:31:52,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579458557] [2020-10-26 23:31:52,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:52,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:52,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860072710] [2020-10-26 23:31:52,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:52,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:52,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:52,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:52,345 INFO L87 Difference]: Start difference. First operand 6691 states and 7345 transitions. Second operand 8 states. [2020-10-26 23:31:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:54,920 INFO L93 Difference]: Finished difference Result 13202 states and 14534 transitions. [2020-10-26 23:31:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:31:54,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 982 [2020-10-26 23:31:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:54,943 INFO L225 Difference]: With dead ends: 13202 [2020-10-26 23:31:54,943 INFO L226 Difference]: Without dead ends: 6883 [2020-10-26 23:31:54,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6883 states. [2020-10-26 23:31:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6883 to 6875. [2020-10-26 23:31:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6875 states. [2020-10-26 23:31:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6875 states to 6875 states and 7533 transitions. [2020-10-26 23:31:55,106 INFO L78 Accepts]: Start accepts. Automaton has 6875 states and 7533 transitions. Word has length 982 [2020-10-26 23:31:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:55,107 INFO L481 AbstractCegarLoop]: Abstraction has 6875 states and 7533 transitions. [2020-10-26 23:31:55,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6875 states and 7533 transitions. [2020-10-26 23:31:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2020-10-26 23:31:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:55,127 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2020-10-26 23:31:55,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:31:55,128 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:55,128 INFO L82 PathProgramCache]: Analyzing trace with hash -627026968, now seen corresponding path program 1 times [2020-10-26 23:31:55,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:55,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821198268] [2020-10-26 23:31:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-26 23:32:00,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 23:32:00,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:32:00,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:00,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:00,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:32:00,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:32:00,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:00,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:32:00,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:00,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:32:00,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:32:00,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:01,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:01,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-26 23:32:01,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:01,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:01,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:01,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:32:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:32:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2953 backedges. 1581 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:01,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821198268] [2020-10-26 23:32:01,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:01,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:01,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883750649] [2020-10-26 23:32:01,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:01,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:01,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:01,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:01,994 INFO L87 Difference]: Start difference. First operand 6875 states and 7533 transitions. Second operand 10 states. [2020-10-26 23:32:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:05,772 INFO L93 Difference]: Finished difference Result 14860 states and 16378 transitions. [2020-10-26 23:32:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:32:05,778 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 984 [2020-10-26 23:32:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:05,803 INFO L225 Difference]: With dead ends: 14860 [2020-10-26 23:32:05,803 INFO L226 Difference]: Without dead ends: 8357 [2020-10-26 23:32:05,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:32:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8357 states. [2020-10-26 23:32:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8357 to 8171. [2020-10-26 23:32:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8171 states. [2020-10-26 23:32:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 8947 transitions. [2020-10-26 23:32:05,992 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 8947 transitions. Word has length 984 [2020-10-26 23:32:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:05,993 INFO L481 AbstractCegarLoop]: Abstraction has 8171 states and 8947 transitions. [2020-10-26 23:32:05,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 8947 transitions. [2020-10-26 23:32:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-26 23:32:06,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:06,014 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:32:06,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:32:06,015 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:06,015 INFO L82 PathProgramCache]: Analyzing trace with hash 414112940, now seen corresponding path program 1 times [2020-10-26 23:32:06,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:06,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137609505] [2020-10-26 23:32:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1067 [2020-10-26 23:32:11,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-26 23:32:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:32:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:32:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:11,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:32:11,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:32:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:11,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:32:11,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:12,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2020-10-26 23:32:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:12,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2020-10-26 23:32:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:12,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:12,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:12,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:12,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:32:12,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3190 backedges. 923 proven. 215 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2020-10-26 23:32:12,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137609505] [2020-10-26 23:32:12,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:12,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:12,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834421757] [2020-10-26 23:32:12,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:12,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:12,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:12,915 INFO L87 Difference]: Start difference. First operand 8171 states and 8947 transitions. Second operand 7 states. [2020-10-26 23:32:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:15,143 INFO L93 Difference]: Finished difference Result 16156 states and 17726 transitions. [2020-10-26 23:32:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:32:15,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1041 [2020-10-26 23:32:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:15,180 INFO L225 Difference]: With dead ends: 16156 [2020-10-26 23:32:15,180 INFO L226 Difference]: Without dead ends: 8357 [2020-10-26 23:32:15,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:32:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8357 states. [2020-10-26 23:32:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8357 to 8355. [2020-10-26 23:32:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8355 states. [2020-10-26 23:32:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 9140 transitions. [2020-10-26 23:32:15,366 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 9140 transitions. Word has length 1041 [2020-10-26 23:32:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:15,367 INFO L481 AbstractCegarLoop]: Abstraction has 8355 states and 9140 transitions. [2020-10-26 23:32:15,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 9140 transitions. [2020-10-26 23:32:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2020-10-26 23:32:15,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:15,393 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:32:15,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:32:15,393 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash 776217371, now seen corresponding path program 1 times [2020-10-26 23:32:15,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:15,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797439561] [2020-10-26 23:32:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1139 [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 399 [2020-10-26 23:32:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:20,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:20,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:20,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:20,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:20,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:20,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:20,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:20,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:21,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:32:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:32:21,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:32:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:32:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:32:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3863 backedges. 2186 proven. 299 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:32:23,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797439561] [2020-10-26 23:32:23,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:23,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:32:23,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372243087] [2020-10-26 23:32:23,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:32:23,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:32:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:23,723 INFO L87 Difference]: Start difference. First operand 8355 states and 9140 transitions. Second operand 11 states. [2020-10-26 23:32:28,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:28,236 INFO L93 Difference]: Finished difference Result 16526 states and 18102 transitions. [2020-10-26 23:32:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 23:32:28,237 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1111 [2020-10-26 23:32:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:28,261 INFO L225 Difference]: With dead ends: 16526 [2020-10-26 23:32:28,261 INFO L226 Difference]: Without dead ends: 8543 [2020-10-26 23:32:28,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-26 23:32:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8543 states. [2020-10-26 23:32:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8543 to 8353. [2020-10-26 23:32:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8353 states. [2020-10-26 23:32:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 9126 transitions. [2020-10-26 23:32:28,559 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 9126 transitions. Word has length 1111 [2020-10-26 23:32:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:28,560 INFO L481 AbstractCegarLoop]: Abstraction has 8353 states and 9126 transitions. [2020-10-26 23:32:28,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:32:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 9126 transitions. [2020-10-26 23:32:28,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-26 23:32:28,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:28,592 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:28,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:32:28,593 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:28,594 INFO L82 PathProgramCache]: Analyzing trace with hash 926948613, now seen corresponding path program 2 times [2020-10-26 23:32:28,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:28,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275285711] [2020-10-26 23:32:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1150 [2020-10-26 23:32:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-26 23:32:33,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:32:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-26 23:32:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:34,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:32:34,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:32:34,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:34,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:32:34,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:32:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:32:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:32:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:32:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:32:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-26 23:32:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:35,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:35,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:32:35,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:32:35,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-26 23:32:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:35,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:35,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:35,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:32:35,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 1370 proven. 371 refuted. 0 times theorem prover too weak. 2138 trivial. 0 not checked. [2020-10-26 23:32:36,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275285711] [2020-10-26 23:32:36,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:36,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:36,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499411697] [2020-10-26 23:32:36,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:36,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:36,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:36,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:36,127 INFO L87 Difference]: Start difference. First operand 8353 states and 9126 transitions. Second operand 8 states. [2020-10-26 23:32:37,010 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-26 23:32:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:39,765 INFO L93 Difference]: Finished difference Result 16340 states and 17881 transitions. [2020-10-26 23:32:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:32:39,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1122 [2020-10-26 23:32:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:39,790 INFO L225 Difference]: With dead ends: 16340 [2020-10-26 23:32:39,790 INFO L226 Difference]: Without dead ends: 8359 [2020-10-26 23:32:39,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:32:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8359 states. [2020-10-26 23:32:39,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8359 to 8353. [2020-10-26 23:32:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8353 states. [2020-10-26 23:32:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 9120 transitions. [2020-10-26 23:32:39,959 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 9120 transitions. Word has length 1122 [2020-10-26 23:32:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:39,960 INFO L481 AbstractCegarLoop]: Abstraction has 8353 states and 9120 transitions. [2020-10-26 23:32:39,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 9120 transitions. [2020-10-26 23:32:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2020-10-26 23:32:39,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:39,983 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:39,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:32:39,983 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash -643562855, now seen corresponding path program 1 times [2020-10-26 23:32:39,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011505551] [2020-10-26 23:32:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:40,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1168 [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:32:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-26 23:32:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:45,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:32:45,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:45,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:32:45,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:32:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:45,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:32:45,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:32:45,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:32:45,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:32:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:32:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:46,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:32:46,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:32:46,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:32:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:32:46,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:32:46,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:46,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:46,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:32:46,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 834 [2020-10-26 23:32:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:32:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:32:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2020-10-26 23:32:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4067 backedges. 1728 proven. 644 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2020-10-26 23:32:47,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011505551] [2020-10-26 23:32:47,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:47,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:32:47,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053746642] [2020-10-26 23:32:47,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:32:47,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:32:47,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:32:47,808 INFO L87 Difference]: Start difference. First operand 8353 states and 9120 transitions. Second operand 9 states. [2020-10-26 23:32:48,704 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-26 23:32:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:51,569 INFO L93 Difference]: Finished difference Result 16556 states and 18131 transitions. [2020-10-26 23:32:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:32:51,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1140 [2020-10-26 23:32:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:51,590 INFO L225 Difference]: With dead ends: 16556 [2020-10-26 23:32:51,590 INFO L226 Difference]: Without dead ends: 8575 [2020-10-26 23:32:51,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:32:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8575 states. [2020-10-26 23:32:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8575 to 8537. [2020-10-26 23:32:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8537 states. [2020-10-26 23:32:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 9305 transitions. [2020-10-26 23:32:51,770 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 9305 transitions. Word has length 1140 [2020-10-26 23:32:51,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:51,771 INFO L481 AbstractCegarLoop]: Abstraction has 8537 states and 9305 transitions. [2020-10-26 23:32:51,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:32:51,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 9305 transitions. [2020-10-26 23:32:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2020-10-26 23:32:51,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:51,794 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 23:32:51,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:32:51,794 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:51,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:51,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1559992480, now seen corresponding path program 1 times [2020-10-26 23:32:51,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:51,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207326520] [2020-10-26 23:32:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1170 [2020-10-26 23:32:57,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:32:57,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:32:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:32:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:32:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:32:57,382 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:32:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:57,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:57,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:57,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:32:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:32:57,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:57,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:32:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:57,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:32:57,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:32:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:32:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:58,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-26 23:32:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:32:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,212 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-10-26 23:32:59,445 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-10-26 23:32:59,710 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-10-26 23:32:59,964 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-10-26 23:33:00,250 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-26 23:33:00,547 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-10-26 23:33:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:33:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:01,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:33:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:33:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:33:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3576 backedges. 1189 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:33:04,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207326520] [2020-10-26 23:33:04,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:04,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:33:04,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86305663] [2020-10-26 23:33:04,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:33:04,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:04,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:33:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:33:04,411 INFO L87 Difference]: Start difference. First operand 8537 states and 9305 transitions. Second operand 13 states. [2020-10-26 23:33:04,672 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-26 23:33:05,563 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-26 23:33:05,978 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-10-26 23:33:06,579 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2020-10-26 23:33:07,037 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-10-26 23:33:07,549 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 100 [2020-10-26 23:33:08,090 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-10-26 23:33:08,622 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 118 [2020-10-26 23:33:09,211 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-10-26 23:33:09,567 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-26 23:33:10,424 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2020-10-26 23:33:10,873 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-10-26 23:33:11,645 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2020-10-26 23:33:11,955 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-26 23:33:12,327 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2020-10-26 23:33:12,935 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 97 [2020-10-26 23:33:13,477 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 103 [2020-10-26 23:33:13,884 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-10-26 23:33:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:14,432 INFO L93 Difference]: Finished difference Result 16892 states and 18452 transitions. [2020-10-26 23:33:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 23:33:14,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1144 [2020-10-26 23:33:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:14,459 INFO L225 Difference]: With dead ends: 16892 [2020-10-26 23:33:14,459 INFO L226 Difference]: Without dead ends: 8707 [2020-10-26 23:33:14,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2020-10-26 23:33:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2020-10-26 23:33:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 8701. [2020-10-26 23:33:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8701 states. [2020-10-26 23:33:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8701 states to 8701 states and 9473 transitions. [2020-10-26 23:33:14,624 INFO L78 Accepts]: Start accepts. Automaton has 8701 states and 9473 transitions. Word has length 1144 [2020-10-26 23:33:14,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:14,625 INFO L481 AbstractCegarLoop]: Abstraction has 8701 states and 9473 transitions. [2020-10-26 23:33:14,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:33:14,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8701 states and 9473 transitions. [2020-10-26 23:33:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1218 [2020-10-26 23:33:14,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:14,649 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 23:33:14,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:33:14,650 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:14,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1133387727, now seen corresponding path program 1 times [2020-10-26 23:33:14,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:14,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338597896] [2020-10-26 23:33:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1245 [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:33:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:20,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:33:20,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:20,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:33:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:20,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:20,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:20,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:20,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:33:20,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:33:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:33:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:33:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:33:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:33:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:33:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:33:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:33:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1090 [2020-10-26 23:33:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:33:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4201 backedges. 1694 proven. 197 refuted. 0 times theorem prover too weak. 2310 trivial. 0 not checked. [2020-10-26 23:33:22,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338597896] [2020-10-26 23:33:22,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:22,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:33:22,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746566024] [2020-10-26 23:33:22,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:33:22,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:22,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:33:22,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:33:22,771 INFO L87 Difference]: Start difference. First operand 8701 states and 9473 transitions. Second operand 9 states.