/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:30:14,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:30:14,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:30:14,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:30:14,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:30:14,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:30:14,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:30:14,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:30:14,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:30:14,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:30:14,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:30:14,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:30:14,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:30:14,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:30:14,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:30:14,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:30:14,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:30:14,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:30:14,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:30:14,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:30:14,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:30:14,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:30:14,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:30:14,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:30:14,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:30:14,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:30:14,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:30:14,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:30:14,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:30:14,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:30:14,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:30:14,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:30:14,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:30:14,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:30:14,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:30:14,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:30:14,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:30:14,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:30:14,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:30:14,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:30:14,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:30:14,484 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 23:30:14,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:30:14,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:30:14,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:30:14,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:30:14,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:30:14,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:30:14,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:30:14,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:30:14,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:30:14,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:30:14,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:30:14,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:30:14,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:30:14,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:30:14,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:30:14,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:30:14,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:30:14,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:30:14,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:30:14,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:30:14,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:30:14,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:30:14,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:30:14,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:30:14,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:30:14,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:30:14,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:30:14,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:30:14,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:30:14,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:30:14,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:30:14,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:30:14,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:30:14,999 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:30:15,000 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:30:15,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label45.c [2020-10-26 23:30:15,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21f2c27aa/f23b50c6bc75441ea1f3dbcb1029e6af/FLAG657a5ae72 [2020-10-26 23:30:15,877 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:30:15,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label45.c [2020-10-26 23:30:15,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21f2c27aa/f23b50c6bc75441ea1f3dbcb1029e6af/FLAG657a5ae72 [2020-10-26 23:30:16,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21f2c27aa/f23b50c6bc75441ea1f3dbcb1029e6af [2020-10-26 23:30:16,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:30:16,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:30:16,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:30:16,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:30:16,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:30:16,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:16,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5388bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16, skipping insertion in model container [2020-10-26 23:30:16,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:16,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:30:16,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:30:16,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:30:16,728 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:30:16,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:30:16,947 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:30:16,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16 WrapperNode [2020-10-26 23:30:16,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:30:16,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:30:16,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:30:16,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:30:16,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:16,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:16,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:16,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:17,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:17,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:17,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... [2020-10-26 23:30:17,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:30:17,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:30:17,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:30:17,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:30:17,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:30:17,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:30:17,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:30:17,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:30:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:30:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:30:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:30:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:30:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:30:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:30:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:30:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:30:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:30:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:30:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:30:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:30:17,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:30:17,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:30:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:30:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:30:19,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:30:19,041 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:30:19,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:19 BoogieIcfgContainer [2020-10-26 23:30:19,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:30:19,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:30:19,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:30:19,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:30:19,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:30:16" (1/3) ... [2020-10-26 23:30:19,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e1c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:19, skipping insertion in model container [2020-10-26 23:30:19,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:16" (2/3) ... [2020-10-26 23:30:19,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e1c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:19, skipping insertion in model container [2020-10-26 23:30:19,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:19" (3/3) ... [2020-10-26 23:30:19,053 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label45.c [2020-10-26 23:30:19,066 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:30:19,072 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:30:19,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:30:19,123 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:30:19,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:30:19,124 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:30:19,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:30:19,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:30:19,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:30:19,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:30:19,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:30:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:30:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-26 23:30:19,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:19,159 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] [2020-10-26 23:30:19,160 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:19,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1253366042, now seen corresponding path program 1 times [2020-10-26 23:30:19,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:19,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429145291] [2020-10-26 23:30:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 23:30:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-26 23:30:20,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 23:30:20,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:30:20,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:20,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:20,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:30:20,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:20,266 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 23:30:20,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429145291] [2020-10-26 23:30:20,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:20,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:30:20,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988912525] [2020-10-26 23:30:20,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:30:20,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:20,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:30:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:30:20,293 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:30:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:23,985 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:30:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:30:23,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-26 23:30:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:24,007 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:30:24,007 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:30:24,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:30:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:30:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:30:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:30:24,119 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 43 [2020-10-26 23:30:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:24,120 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:30:24,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:30:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:30:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-26 23:30:24,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:24,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:24,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:30:24,128 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1084435551, now seen corresponding path program 1 times [2020-10-26 23:30:24,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:24,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832282479] [2020-10-26 23:30:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:30:25,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-26 23:30:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:30:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:30:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:25,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:25,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:25,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:25,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:30:25,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 23:30:25,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:30:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:25,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832282479] [2020-10-26 23:30:25,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:25,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:30:25,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071100814] [2020-10-26 23:30:25,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:25,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:25,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:25,966 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 7 states. [2020-10-26 23:30:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:28,678 INFO L93 Difference]: Finished difference Result 1320 states and 2175 transitions. [2020-10-26 23:30:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:30:28,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-26 23:30:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:28,686 INFO L225 Difference]: With dead ends: 1320 [2020-10-26 23:30:28,687 INFO L226 Difference]: Without dead ends: 767 [2020-10-26 23:30:28,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-10-26 23:30:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 565. [2020-10-26 23:30:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-10-26 23:30:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 817 transitions. [2020-10-26 23:30:28,772 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 817 transitions. Word has length 129 [2020-10-26 23:30:28,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:28,774 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 817 transitions. [2020-10-26 23:30:28,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 817 transitions. [2020-10-26 23:30:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-26 23:30:28,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:28,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:28,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:30:28,782 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:28,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:28,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1712667021, now seen corresponding path program 1 times [2020-10-26 23:30:28,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:28,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149512550] [2020-10-26 23:30:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:30:31,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:31,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2192 [2020-10-26 23:30:31,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:31,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:30:31,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:30:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:30:31,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:30:31,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:30:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:31,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149512550] [2020-10-26 23:30:31,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:31,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:30:31,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478891361] [2020-10-26 23:30:31,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:31,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:31,557 INFO L87 Difference]: Start difference. First operand 565 states and 817 transitions. Second operand 7 states. [2020-10-26 23:30:33,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:33,755 INFO L93 Difference]: Finished difference Result 1320 states and 1909 transitions. [2020-10-26 23:30:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:30:33,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-26 23:30:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:33,764 INFO L225 Difference]: With dead ends: 1320 [2020-10-26 23:30:33,765 INFO L226 Difference]: Without dead ends: 761 [2020-10-26 23:30:33,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-26 23:30:33,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 753. [2020-10-26 23:30:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-26 23:30:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1074 transitions. [2020-10-26 23:30:33,797 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1074 transitions. Word has length 138 [2020-10-26 23:30:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:33,798 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1074 transitions. [2020-10-26 23:30:33,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1074 transitions. [2020-10-26 23:30:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-26 23:30:33,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:33,803 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:33,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:30:33,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:33,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:33,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2112467578, now seen corresponding path program 1 times [2020-10-26 23:30:33,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:33,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743502825] [2020-10-26 23:30:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:33,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:38,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:38,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-26 23:30:38,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:30:38,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:30:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:39,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:39,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:30:39,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:39,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:39,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:30:39,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:30:39,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:30:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 23:30:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:39,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:39,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:39,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:30:39,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:30:39,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:30:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 70 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:30:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743502825] [2020-10-26 23:30:39,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:39,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:39,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44613729] [2020-10-26 23:30:39,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:39,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:39,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:39,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:39,349 INFO L87 Difference]: Start difference. First operand 753 states and 1074 transitions. Second operand 7 states. [2020-10-26 23:30:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:41,863 INFO L93 Difference]: Finished difference Result 1900 states and 2703 transitions. [2020-10-26 23:30:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:41,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-26 23:30:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:41,875 INFO L225 Difference]: With dead ends: 1900 [2020-10-26 23:30:41,875 INFO L226 Difference]: Without dead ends: 1153 [2020-10-26 23:30:41,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-10-26 23:30:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1125. [2020-10-26 23:30:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-10-26 23:30:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1503 transitions. [2020-10-26 23:30:41,932 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1503 transitions. Word has length 207 [2020-10-26 23:30:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:41,934 INFO L481 AbstractCegarLoop]: Abstraction has 1125 states and 1503 transitions. [2020-10-26 23:30:41,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1503 transitions. [2020-10-26 23:30:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-26 23:30:41,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:41,938 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:30:41,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:30:41,939 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:41,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1237901298, now seen corresponding path program 1 times [2020-10-26 23:30:41,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:41,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772623786] [2020-10-26 23:30:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-26 23:30:46,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 23:30:46,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:30:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:47,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:47,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:47,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:47,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:30:47,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:47,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:47,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:47,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:47,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:47,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:47,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:30:47,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:47,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 23:30:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:47,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:47,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:30:47,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:30:47,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:30:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:30:47,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772623786] [2020-10-26 23:30:47,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:47,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:47,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641562469] [2020-10-26 23:30:47,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:47,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:47,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:47,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:47,460 INFO L87 Difference]: Start difference. First operand 1125 states and 1503 transitions. Second operand 8 states. [2020-10-26 23:30:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:51,170 INFO L93 Difference]: Finished difference Result 3914 states and 5440 transitions. [2020-10-26 23:30:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:51,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2020-10-26 23:30:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:51,186 INFO L225 Difference]: With dead ends: 3914 [2020-10-26 23:30:51,187 INFO L226 Difference]: Without dead ends: 2795 [2020-10-26 23:30:51,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2020-10-26 23:30:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2429. [2020-10-26 23:30:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2429 states. [2020-10-26 23:30:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3169 transitions. [2020-10-26 23:30:51,274 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3169 transitions. Word has length 211 [2020-10-26 23:30:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:51,274 INFO L481 AbstractCegarLoop]: Abstraction has 2429 states and 3169 transitions. [2020-10-26 23:30:51,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3169 transitions. [2020-10-26 23:30:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-26 23:30:51,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:51,278 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:30:51,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:30:51,279 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:51,279 INFO L82 PathProgramCache]: Analyzing trace with hash -7031496, now seen corresponding path program 1 times [2020-10-26 23:30:51,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:51,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894369579] [2020-10-26 23:30:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-26 23:30:54,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:54,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3667 [2020-10-26 23:30:54,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:30:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-26 23:30:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:55,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:55,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:30:55,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:30:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:30:55,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:30:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:30:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:30:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:30:55,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:30:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 71 proven. 79 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:30:55,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894369579] [2020-10-26 23:30:55,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:55,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:55,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113389846] [2020-10-26 23:30:55,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:55,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:55,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:55,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:55,905 INFO L87 Difference]: Start difference. First operand 2429 states and 3169 transitions. Second operand 8 states. [2020-10-26 23:30:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:58,474 INFO L93 Difference]: Finished difference Result 4338 states and 5803 transitions. [2020-10-26 23:30:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:58,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-10-26 23:30:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:58,491 INFO L225 Difference]: With dead ends: 4338 [2020-10-26 23:30:58,491 INFO L226 Difference]: Without dead ends: 2465 [2020-10-26 23:30:58,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:58,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-10-26 23:30:58,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2255. [2020-10-26 23:30:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2020-10-26 23:30:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2967 transitions. [2020-10-26 23:30:58,577 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2967 transitions. Word has length 222 [2020-10-26 23:30:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:58,577 INFO L481 AbstractCegarLoop]: Abstraction has 2255 states and 2967 transitions. [2020-10-26 23:30:58,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2967 transitions. [2020-10-26 23:30:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-26 23:30:58,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:58,585 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 23:30:58,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:30:58,585 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:58,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1481780391, now seen corresponding path program 1 times [2020-10-26 23:30:58,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:58,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195726794] [2020-10-26 23:30:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:00,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-26 23:31:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:31:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:31:03,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:31:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:31:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:03,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:31:03,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:31:03,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:31:03,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:31:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:31:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:04,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:31:04,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:04,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-26 23:31:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:31:04,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:04,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-26 23:31:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:31:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 166 proven. 97 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-26 23:31:04,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195726794] [2020-10-26 23:31:04,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:04,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:04,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94951] [2020-10-26 23:31:04,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:31:04,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:04,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:31:04,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:04,883 INFO L87 Difference]: Start difference. First operand 2255 states and 2967 transitions. Second operand 9 states. [2020-10-26 23:31:05,280 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-26 23:31:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:08,720 INFO L93 Difference]: Finished difference Result 4971 states and 6763 transitions. [2020-10-26 23:31:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:31:08,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 295 [2020-10-26 23:31:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:08,738 INFO L225 Difference]: With dead ends: 4971 [2020-10-26 23:31:08,738 INFO L226 Difference]: Without dead ends: 3037 [2020-10-26 23:31:08,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:31:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-10-26 23:31:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2811. [2020-10-26 23:31:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2020-10-26 23:31:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3367 transitions. [2020-10-26 23:31:08,832 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3367 transitions. Word has length 295 [2020-10-26 23:31:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:08,833 INFO L481 AbstractCegarLoop]: Abstraction has 2811 states and 3367 transitions. [2020-10-26 23:31:08,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:31:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3367 transitions. [2020-10-26 23:31:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-26 23:31:08,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:08,844 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 23:31:08,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:31:08,844 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:08,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1706597898, now seen corresponding path program 1 times [2020-10-26 23:31:08,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:08,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100519558] [2020-10-26 23:31:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-26 23:31:13,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 23:31:13,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:31:13,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:31:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:31:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:31:14,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:31:14,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:31:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:31:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:14,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:14,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-26 23:31:14,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:14,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:31:14,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-26 23:31:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:31:14,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:31:14,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-26 23:31:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:31:14,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:31:14,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:31:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 229 proven. 175 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-26 23:31:14,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100519558] [2020-10-26 23:31:14,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:14,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:31:14,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776867039] [2020-10-26 23:31:14,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:31:14,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:31:14,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:31:14,865 INFO L87 Difference]: Start difference. First operand 2811 states and 3367 transitions. Second operand 6 states. [2020-10-26 23:31:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:16,710 INFO L93 Difference]: Finished difference Result 5563 states and 6710 transitions. [2020-10-26 23:31:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:31:16,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 415 [2020-10-26 23:31:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:16,724 INFO L225 Difference]: With dead ends: 5563 [2020-10-26 23:31:16,725 INFO L226 Difference]: Without dead ends: 2837 [2020-10-26 23:31:16,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2020-10-26 23:31:16,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2807. [2020-10-26 23:31:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2807 states. [2020-10-26 23:31:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3148 transitions. [2020-10-26 23:31:16,813 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3148 transitions. Word has length 415 [2020-10-26 23:31:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:16,813 INFO L481 AbstractCegarLoop]: Abstraction has 2807 states and 3148 transitions. [2020-10-26 23:31:16,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:31:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3148 transitions. [2020-10-26 23:31:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-26 23:31:16,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:16,825 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 23:31:16,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:31:16,826 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:16,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:16,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1731133924, now seen corresponding path program 1 times [2020-10-26 23:31:16,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:16,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922547351] [2020-10-26 23:31:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 23:31:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:22,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:31:22,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:22,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:22,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:31:22,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:31:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:31:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 23:31:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-26 23:31:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 149 proven. 421 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 23:31:22,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922547351] [2020-10-26 23:31:22,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:22,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:22,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980319634] [2020-10-26 23:31:22,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:22,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:22,930 INFO L87 Difference]: Start difference. First operand 2807 states and 3148 transitions. Second operand 8 states. [2020-10-26 23:31:25,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:25,048 INFO L93 Difference]: Finished difference Result 5254 states and 5946 transitions. [2020-10-26 23:31:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:31:25,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 454 [2020-10-26 23:31:25,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:25,063 INFO L225 Difference]: With dead ends: 5254 [2020-10-26 23:31:25,063 INFO L226 Difference]: Without dead ends: 2819 [2020-10-26 23:31:25,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:31:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-10-26 23:31:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2629. [2020-10-26 23:31:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2629 states. [2020-10-26 23:31:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 2964 transitions. [2020-10-26 23:31:25,144 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 2964 transitions. Word has length 454 [2020-10-26 23:31:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:25,144 INFO L481 AbstractCegarLoop]: Abstraction has 2629 states and 2964 transitions. [2020-10-26 23:31:25,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 2964 transitions. [2020-10-26 23:31:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-26 23:31:25,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:25,158 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:25,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:31:25,159 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:25,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1262615061, now seen corresponding path program 1 times [2020-10-26 23:31:25,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:25,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38837976] [2020-10-26 23:31:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:31:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:30,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:31:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:30,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:30,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:31:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:31:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:31:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:30,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:30,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:31:30,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:31:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:30,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:30,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:30,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:31:30,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:30,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-26 23:31:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:30,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:31:30,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:30,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:31:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 547 proven. 166 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-26 23:31:31,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38837976] [2020-10-26 23:31:31,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:31,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:31,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631402908] [2020-10-26 23:31:31,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:31,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:31,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:31,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:31,353 INFO L87 Difference]: Start difference. First operand 2629 states and 2964 transitions. Second operand 7 states. [2020-10-26 23:31:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:33,437 INFO L93 Difference]: Finished difference Result 5626 states and 6365 transitions. [2020-10-26 23:31:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:33,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 540 [2020-10-26 23:31:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:33,451 INFO L225 Difference]: With dead ends: 5626 [2020-10-26 23:31:33,451 INFO L226 Difference]: Without dead ends: 3369 [2020-10-26 23:31:33,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2020-10-26 23:31:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3181. [2020-10-26 23:31:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2020-10-26 23:31:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 3549 transitions. [2020-10-26 23:31:33,539 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 3549 transitions. Word has length 540 [2020-10-26 23:31:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:33,540 INFO L481 AbstractCegarLoop]: Abstraction has 3181 states and 3549 transitions. [2020-10-26 23:31:33,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 3549 transitions. [2020-10-26 23:31:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2020-10-26 23:31:33,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:33,550 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:33,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:31:33,550 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:33,551 INFO L82 PathProgramCache]: Analyzing trace with hash 316409880, now seen corresponding path program 1 times [2020-10-26 23:31:33,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:33,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145343405] [2020-10-26 23:31:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:38,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:38,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-26 23:31:38,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 23:31:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:31:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:31:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:38,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:38,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:38,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:38,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:38,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:38,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:38,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:38,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:38,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:31:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:31:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:39,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:39,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:39,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:31:39,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:31:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:39,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:39,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:39,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:31:39,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 23:31:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:39,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-26 23:31:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:39,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:39,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:31:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:31:39,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:31:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:39,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2020-10-26 23:31:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:39,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:39,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 452 proven. 308 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2020-10-26 23:31:39,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145343405] [2020-10-26 23:31:39,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:39,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:39,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675998610] [2020-10-26 23:31:39,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:39,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:39,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:39,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:39,749 INFO L87 Difference]: Start difference. First operand 3181 states and 3549 transitions. Second operand 7 states. [2020-10-26 23:31:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:43,127 INFO L93 Difference]: Finished difference Result 7665 states and 8758 transitions. [2020-10-26 23:31:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:43,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 740 [2020-10-26 23:31:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:43,147 INFO L225 Difference]: With dead ends: 7665 [2020-10-26 23:31:43,148 INFO L226 Difference]: Without dead ends: 4856 [2020-10-26 23:31:43,155 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 23:31:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-26 23:31:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4845. [2020-10-26 23:31:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2020-10-26 23:31:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 5520 transitions. [2020-10-26 23:31:43,296 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 5520 transitions. Word has length 740 [2020-10-26 23:31:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:43,297 INFO L481 AbstractCegarLoop]: Abstraction has 4845 states and 5520 transitions. [2020-10-26 23:31:43,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 5520 transitions. [2020-10-26 23:31:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2020-10-26 23:31:43,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:43,309 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:43,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:31:43,309 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash -136625586, now seen corresponding path program 1 times [2020-10-26 23:31:43,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:43,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17059771] [2020-10-26 23:31:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 769 [2020-10-26 23:31:48,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:31:48,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:31:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:48,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:48,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:31:48,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:31:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:49,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:49,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:31:49,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:49,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:31:49,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:31:49,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-26 23:31:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:49,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:31:49,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:31:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 676 proven. 94 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2020-10-26 23:31:49,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17059771] [2020-10-26 23:31:49,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:49,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:49,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881141916] [2020-10-26 23:31:49,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:49,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:49,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:49,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:49,445 INFO L87 Difference]: Start difference. First operand 4845 states and 5520 transitions. Second operand 7 states. [2020-10-26 23:31:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:51,618 INFO L93 Difference]: Finished difference Result 11160 states and 12970 transitions. [2020-10-26 23:31:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:51,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 747 [2020-10-26 23:31:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:51,645 INFO L225 Difference]: With dead ends: 11160 [2020-10-26 23:31:51,645 INFO L226 Difference]: Without dead ends: 6687 [2020-10-26 23:31:51,656 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 23:31:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2020-10-26 23:31:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 6503. [2020-10-26 23:31:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6503 states. [2020-10-26 23:31:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 7467 transitions. [2020-10-26 23:31:51,810 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 7467 transitions. Word has length 747 [2020-10-26 23:31:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:51,811 INFO L481 AbstractCegarLoop]: Abstraction has 6503 states and 7467 transitions. [2020-10-26 23:31:51,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 7467 transitions. [2020-10-26 23:31:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-26 23:31:51,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:51,823 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, 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:51,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:31:51,824 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:51,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1158232753, now seen corresponding path program 1 times [2020-10-26 23:31:51,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:51,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835184872] [2020-10-26 23:31:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 811 [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:57,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:57,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:57,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:57,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:57,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:31:57,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:57,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:31:57,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:57,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:31:57,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:31:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-10-26 23:31:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:57,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-26 23:31:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:31:57,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:31:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2132 backedges. 604 proven. 150 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:31:57,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835184872] [2020-10-26 23:31:57,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:57,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:57,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039916408] [2020-10-26 23:31:57,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:57,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:57,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:57,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:57,959 INFO L87 Difference]: Start difference. First operand 6503 states and 7467 transitions. Second operand 7 states. [2020-10-26 23:32:01,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:01,094 INFO L93 Difference]: Finished difference Result 13376 states and 15390 transitions. [2020-10-26 23:32:01,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:32:01,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 787 [2020-10-26 23:32:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:01,124 INFO L225 Difference]: With dead ends: 13376 [2020-10-26 23:32:01,124 INFO L226 Difference]: Without dead ends: 7245 [2020-10-26 23:32:01,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 23:32:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2020-10-26 23:32:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6877. [2020-10-26 23:32:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6877 states. [2020-10-26 23:32:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6877 states to 6877 states and 7800 transitions. [2020-10-26 23:32:01,291 INFO L78 Accepts]: Start accepts. Automaton has 6877 states and 7800 transitions. Word has length 787 [2020-10-26 23:32:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:01,293 INFO L481 AbstractCegarLoop]: Abstraction has 6877 states and 7800 transitions. [2020-10-26 23:32:01,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:01,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6877 states and 7800 transitions. [2020-10-26 23:32:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-26 23:32:01,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:01,305 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:01,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:32:01,305 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:01,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1279387465, now seen corresponding path program 1 times [2020-10-26 23:32:01,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:01,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340552916] [2020-10-26 23:32:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:01,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 847 [2020-10-26 23:32:06,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:32:06,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:32:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:32:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:06,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:06,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:06,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:06,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:06,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:32:06,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:06,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:32:06,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:32:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:07,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:32:07,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:32:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:32:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2020-10-26 23:32:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:32:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 584 proven. 148 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2020-10-26 23:32:07,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340552916] [2020-10-26 23:32:07,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:07,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:07,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489256478] [2020-10-26 23:32:07,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:07,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:07,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:07,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:07,518 INFO L87 Difference]: Start difference. First operand 6877 states and 7800 transitions. Second operand 7 states. [2020-10-26 23:32:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:09,529 INFO L93 Difference]: Finished difference Result 15218 states and 17399 transitions. [2020-10-26 23:32:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:09,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 823 [2020-10-26 23:32:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:09,555 INFO L225 Difference]: With dead ends: 15218 [2020-10-26 23:32:09,556 INFO L226 Difference]: Without dead ends: 8713 [2020-10-26 23:32:09,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:32:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8713 states. [2020-10-26 23:32:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8713 to 8529. [2020-10-26 23:32:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8529 states. [2020-10-26 23:32:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8529 states to 8529 states and 9650 transitions. [2020-10-26 23:32:09,762 INFO L78 Accepts]: Start accepts. Automaton has 8529 states and 9650 transitions. Word has length 823 [2020-10-26 23:32:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:09,764 INFO L481 AbstractCegarLoop]: Abstraction has 8529 states and 9650 transitions. [2020-10-26 23:32:09,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8529 states and 9650 transitions. [2020-10-26 23:32:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2020-10-26 23:32:09,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:09,776 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, 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, 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] [2020-10-26 23:32:09,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:32:09,776 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1230344527, now seen corresponding path program 1 times [2020-10-26 23:32:09,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:09,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139125939] [2020-10-26 23:32:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:10,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 892 [2020-10-26 23:32:15,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-26 23:32:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:32:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:32:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:15,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:32:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:15,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:15,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:15,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:15,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:15,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:15,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:15,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:32:15,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:32:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:32:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:32:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:16,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:16,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:16,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:32:16,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:32:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2020-10-26 23:32:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:16,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:32:16,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:32:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2317 backedges. 775 proven. 164 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:32:16,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139125939] [2020-10-26 23:32:16,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:16,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:16,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751235412] [2020-10-26 23:32:16,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:16,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:16,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:16,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:16,684 INFO L87 Difference]: Start difference. First operand 8529 states and 9650 transitions. Second operand 8 states. [2020-10-26 23:32:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:19,425 INFO L93 Difference]: Finished difference Result 17422 states and 19709 transitions. [2020-10-26 23:32:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:19,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 868 [2020-10-26 23:32:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:19,455 INFO L225 Difference]: With dead ends: 17422 [2020-10-26 23:32:19,455 INFO L226 Difference]: Without dead ends: 9265 [2020-10-26 23:32:19,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:32:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9265 states. [2020-10-26 23:32:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9265 to 9079. [2020-10-26 23:32:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9079 states. [2020-10-26 23:32:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9079 states to 9079 states and 10200 transitions. [2020-10-26 23:32:19,670 INFO L78 Accepts]: Start accepts. Automaton has 9079 states and 10200 transitions. Word has length 868 [2020-10-26 23:32:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:19,671 INFO L481 AbstractCegarLoop]: Abstraction has 9079 states and 10200 transitions. [2020-10-26 23:32:19,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9079 states and 10200 transitions. [2020-10-26 23:32:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-26 23:32:19,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:19,687 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, 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, 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] [2020-10-26 23:32:19,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:32:19,688 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:19,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1220349561, now seen corresponding path program 1 times [2020-10-26 23:32:19,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:19,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67751055] [2020-10-26 23:32:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-26 23:32:24,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:32:24,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:32:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:32:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:25,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:32:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:25,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:25,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:25,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:25,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:25,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:25,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:25,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:25,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:25,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:25,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:25,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:25,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:25,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:32:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:32:25,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:32:25,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:32:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:32:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:25,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:32:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:32:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:32:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:32:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2317 backedges. 635 proven. 72 refuted. 0 times theorem prover too weak. 1610 trivial. 0 not checked. [2020-10-26 23:32:26,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67751055] [2020-10-26 23:32:26,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:26,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:26,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259251754] [2020-10-26 23:32:26,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:26,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:26,232 INFO L87 Difference]: Start difference. First operand 9079 states and 10200 transitions. Second operand 7 states. [2020-10-26 23:32:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:28,365 INFO L93 Difference]: Finished difference Result 17790 states and 20027 transitions. [2020-10-26 23:32:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:32:28,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 879 [2020-10-26 23:32:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:28,389 INFO L225 Difference]: With dead ends: 17790 [2020-10-26 23:32:28,390 INFO L226 Difference]: Without dead ends: 9083 [2020-10-26 23:32:28,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2020-10-26 23:32:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 9079. [2020-10-26 23:32:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9079 states. [2020-10-26 23:32:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9079 states to 9079 states and 10185 transitions. [2020-10-26 23:32:28,700 INFO L78 Accepts]: Start accepts. Automaton has 9079 states and 10185 transitions. Word has length 879 [2020-10-26 23:32:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:28,702 INFO L481 AbstractCegarLoop]: Abstraction has 9079 states and 10185 transitions. [2020-10-26 23:32:28,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 9079 states and 10185 transitions. [2020-10-26 23:32:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-26 23:32:28,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:28,714 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, 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, 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, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:28,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:32:28,714 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:28,715 INFO L82 PathProgramCache]: Analyzing trace with hash -26981730, now seen corresponding path program 1 times [2020-10-26 23:32:28,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:28,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247182519] [2020-10-26 23:32:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:33,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 948 [2020-10-26 23:32:33,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:32:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:32:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:34,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:34,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:34,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:34,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:34,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:34,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:34,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:34,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:32:34,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:34,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:32:34,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:34,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:34,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:32:34,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:32:34,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:32:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:32:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:34,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:32:34,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:32:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 1450 proven. 68 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:36,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247182519] [2020-10-26 23:32:36,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:36,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:36,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78437283] [2020-10-26 23:32:36,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:36,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:36,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:36,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:36,274 INFO L87 Difference]: Start difference. First operand 9079 states and 10185 transitions. Second operand 10 states. [2020-10-26 23:32:38,433 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-26 23:32:39,106 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-26 23:32:39,503 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-26 23:32:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:40,374 INFO L93 Difference]: Finished difference Result 20071 states and 22761 transitions. [2020-10-26 23:32:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:32:40,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 922 [2020-10-26 23:32:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:40,411 INFO L225 Difference]: With dead ends: 20071 [2020-10-26 23:32:40,411 INFO L226 Difference]: Without dead ends: 11329 [2020-10-26 23:32:40,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:32:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11329 states. [2020-10-26 23:32:40,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11329 to 11111. [2020-10-26 23:32:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11111 states. [2020-10-26 23:32:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11111 states to 11111 states and 12602 transitions. [2020-10-26 23:32:40,671 INFO L78 Accepts]: Start accepts. Automaton has 11111 states and 12602 transitions. Word has length 922 [2020-10-26 23:32:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:40,672 INFO L481 AbstractCegarLoop]: Abstraction has 11111 states and 12602 transitions. [2020-10-26 23:32:40,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 11111 states and 12602 transitions. [2020-10-26 23:32:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-26 23:32:40,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:40,689 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:40,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:32:40,689 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash -793019396, now seen corresponding path program 1 times [2020-10-26 23:32:40,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:40,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391275860] [2020-10-26 23:32:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-26 23:32:46,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:46,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-26 23:32:46,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:32:46,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:32:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:46,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:46,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:46,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:32:46,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:46,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:32:46,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:46,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:32:46,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:46,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:32:46,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:32:47,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:47,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:32:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:47,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:47,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:47,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:32:47,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:32:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2920 backedges. 1460 proven. 94 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:48,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391275860] [2020-10-26 23:32:48,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:48,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:48,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921113167] [2020-10-26 23:32:48,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:48,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:48,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:48,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:48,021 INFO L87 Difference]: Start difference. First operand 11111 states and 12602 transitions. Second operand 10 states. [2020-10-26 23:32:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:51,560 INFO L93 Difference]: Finished difference Result 22073 states and 25105 transitions. [2020-10-26 23:32:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:32:51,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 955 [2020-10-26 23:32:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:51,600 INFO L225 Difference]: With dead ends: 22073 [2020-10-26 23:32:51,601 INFO L226 Difference]: Without dead ends: 11301 [2020-10-26 23:32:51,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:32:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11301 states. [2020-10-26 23:32:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11301 to 11111. [2020-10-26 23:32:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11111 states. [2020-10-26 23:32:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11111 states to 11111 states and 12587 transitions. [2020-10-26 23:32:51,854 INFO L78 Accepts]: Start accepts. Automaton has 11111 states and 12587 transitions. Word has length 955 [2020-10-26 23:32:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:51,856 INFO L481 AbstractCegarLoop]: Abstraction has 11111 states and 12587 transitions. [2020-10-26 23:32:51,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 11111 states and 12587 transitions. [2020-10-26 23:32:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-26 23:32:51,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:51,873 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:51,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:32:51,873 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:51,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1831377510, now seen corresponding path program 1 times [2020-10-26 23:32:51,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:51,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219246957] [2020-10-26 23:32:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:52,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 982 [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:32:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:57,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:57,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:57,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:57,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:57,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:57,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:57,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:57,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:32:57,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:32:57,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 23:32:57,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:32:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:32:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:58,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:32:58,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:32:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,391 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-26 23:32:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 1461 proven. 94 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:59,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219246957] [2020-10-26 23:32:59,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:59,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:59,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184405716] [2020-10-26 23:32:59,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:59,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:59,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:59,835 INFO L87 Difference]: Start difference. First operand 11111 states and 12587 transitions. Second operand 10 states. [2020-10-26 23:33:03,506 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-26 23:33:04,024 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-26 23:33:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:04,137 INFO L93 Difference]: Finished difference Result 22171 states and 25197 transitions. [2020-10-26 23:33:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:33:04,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 956 [2020-10-26 23:33:04,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:04,173 INFO L225 Difference]: With dead ends: 22171 [2020-10-26 23:33:04,173 INFO L226 Difference]: Without dead ends: 11327 [2020-10-26 23:33:04,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2020-10-26 23:33:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11327 states. [2020-10-26 23:33:04,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11327 to 11109. [2020-10-26 23:33:04,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11109 states. [2020-10-26 23:33:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11109 states to 11109 states and 12524 transitions. [2020-10-26 23:33:04,436 INFO L78 Accepts]: Start accepts. Automaton has 11109 states and 12524 transitions. Word has length 956 [2020-10-26 23:33:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:04,437 INFO L481 AbstractCegarLoop]: Abstraction has 11109 states and 12524 transitions. [2020-10-26 23:33:04,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:33:04,437 INFO L276 IsEmpty]: Start isEmpty. Operand 11109 states and 12524 transitions. [2020-10-26 23:33:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-26 23:33:04,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:04,452 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, 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, 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 23:33:04,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:33:04,452 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1015089840, now seen corresponding path program 1 times [2020-10-26 23:33:04,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:04,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737033133] [2020-10-26 23:33:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:04,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:33:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:09,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:09,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:09,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:09,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:33:09,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:10,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:10,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:10,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:10,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:10,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:33:10,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:33:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:10,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:10,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:33:10,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:10,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 23:33:10,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:33:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:33:10,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:33:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:10,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:10,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:33:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:33:10,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:33:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1533 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:33:11,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737033133] [2020-10-26 23:33:11,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:11,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:33:11,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256630576] [2020-10-26 23:33:11,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:33:11,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:11,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:33:11,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:33:11,507 INFO L87 Difference]: Start difference. First operand 11109 states and 12524 transitions. Second operand 10 states. [2020-10-26 23:33:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:15,742 INFO L93 Difference]: Finished difference Result 21472 states and 24184 transitions. [2020-10-26 23:33:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:33:15,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 978 [2020-10-26 23:33:15,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:15,776 INFO L225 Difference]: With dead ends: 21472 [2020-10-26 23:33:15,777 INFO L226 Difference]: Without dead ends: 10735 [2020-10-26 23:33:15,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:33:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2020-10-26 23:33:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 10549. [2020-10-26 23:33:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10549 states. [2020-10-26 23:33:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10549 states to 10549 states and 11738 transitions. [2020-10-26 23:33:16,021 INFO L78 Accepts]: Start accepts. Automaton has 10549 states and 11738 transitions. Word has length 978 [2020-10-26 23:33:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:16,022 INFO L481 AbstractCegarLoop]: Abstraction has 10549 states and 11738 transitions. [2020-10-26 23:33:16,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:33:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10549 states and 11738 transitions. [2020-10-26 23:33:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-26 23:33:16,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:16,039 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, 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, 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, 1, 1, 1, 1, 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 23:33:16,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:33:16,039 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:16,040 INFO L82 PathProgramCache]: Analyzing trace with hash -890649640, now seen corresponding path program 1 times [2020-10-26 23:33:16,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:16,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589516663] [2020-10-26 23:33:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:16,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:16,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1067 [2020-10-26 23:33:21,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:33:21,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:33:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:33:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:33:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:21,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:33:21,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:21,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:21,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:33:21,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:21,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:21,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:21,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:33:21,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:21,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:33:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:33:22,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:33:22,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:33:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:33:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:22,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:22,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:33:22,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:33:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:22,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:33:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:22,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:22,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:33:22,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:33:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 1287 proven. 76 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:33:23,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589516663] [2020-10-26 23:33:23,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:23,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:33:23,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907351393] [2020-10-26 23:33:23,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:33:23,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:23,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:33:23,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:33:23,228 INFO L87 Difference]: Start difference. First operand 10549 states and 11738 transitions. Second operand 10 states. [2020-10-26 23:33:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:26,498 INFO L93 Difference]: Finished difference Result 21898 states and 24372 transitions. [2020-10-26 23:33:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:33:26,499 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1041 [2020-10-26 23:33:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:26,526 INFO L225 Difference]: With dead ends: 21898 [2020-10-26 23:33:26,526 INFO L226 Difference]: Without dead ends: 11653 [2020-10-26 23:33:26,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:33:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11653 states. [2020-10-26 23:33:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11653 to 10733. [2020-10-26 23:33:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10733 states. [2020-10-26 23:33:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 11929 transitions. [2020-10-26 23:33:26,770 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 11929 transitions. Word has length 1041 [2020-10-26 23:33:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:26,771 INFO L481 AbstractCegarLoop]: Abstraction has 10733 states and 11929 transitions. [2020-10-26 23:33:26,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:33:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 11929 transitions. [2020-10-26 23:33:26,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2020-10-26 23:33:26,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:26,796 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, 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, 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 23:33:26,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:33:26,797 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:26,797 INFO L82 PathProgramCache]: Analyzing trace with hash -976130653, now seen corresponding path program 1 times [2020-10-26 23:33:26,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:26,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100888159] [2020-10-26 23:33:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1133 [2020-10-26 23:33:32,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:33:32,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:33:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:33:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 399 [2020-10-26 23:33:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:32,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:32,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:32,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:32,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:32,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:33:32,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:33:32,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:33:32,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:33:32,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:33:32,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:33:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:32,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:32,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:32,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:33:32,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-26 23:33:32,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:33:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:33:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:33:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:33:33,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:33:33,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:33:33,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:33,448 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-26 23:33:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:33:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:33,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:33:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:33:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3809 backedges. 2243 proven. 188 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:33:35,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100888159] [2020-10-26 23:33:35,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:35,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:33:35,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748658235] [2020-10-26 23:33:35,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:33:35,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:35,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:33:35,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:35,034 INFO L87 Difference]: Start difference. First operand 10733 states and 11929 transitions. Second operand 11 states. [2020-10-26 23:33:39,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:39,564 INFO L93 Difference]: Finished difference Result 21098 states and 23493 transitions. [2020-10-26 23:33:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:33:39,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1105 [2020-10-26 23:33:39,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:39,593 INFO L225 Difference]: With dead ends: 21098 [2020-10-26 23:33:39,593 INFO L226 Difference]: Without dead ends: 10737 [2020-10-26 23:33:39,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:33:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10737 states. [2020-10-26 23:33:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10737 to 10549. [2020-10-26 23:33:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10549 states. [2020-10-26 23:33:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10549 states to 10549 states and 11722 transitions. [2020-10-26 23:33:39,952 INFO L78 Accepts]: Start accepts. Automaton has 10549 states and 11722 transitions. Word has length 1105 [2020-10-26 23:33:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:39,953 INFO L481 AbstractCegarLoop]: Abstraction has 10549 states and 11722 transitions. [2020-10-26 23:33:39,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:33:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 10549 states and 11722 transitions. [2020-10-26 23:33:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2020-10-26 23:33:39,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:39,976 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, 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, 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 23:33:39,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:33:39,977 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:39,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1865929416, now seen corresponding path program 1 times [2020-10-26 23:33:39,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:39,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702592140] [2020-10-26 23:33:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking...