/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/Problem16_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:52:25,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:52:25,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:52:25,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:52:25,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:52:25,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:52:25,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:52:25,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:52:25,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:52:25,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:52:25,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:52:25,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:52:25,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:52:25,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:52:25,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:52:25,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:52:25,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:52:25,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:52:25,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:52:25,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:52:25,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:52:25,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:52:25,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:52:25,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:52:25,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:52:25,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:52:25,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:52:25,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:52:25,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:52:25,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:52:25,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:52:25,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:52:25,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:52:25,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:52:25,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:52:25,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:52:25,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:52:25,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:52:25,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:52:25,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:52:25,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:52:25,564 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 23:52:25,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:52:25,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:52:25,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:52:25,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:52:25,594 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:52:25,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:52:25,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:52:25,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:52:25,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:52:25,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:52:25,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:52:25,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:52:25,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:52:25,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:52:25,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:52:25,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:52:25,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:52:25,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:52:25,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:52:25,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:52:25,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:52:25,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:52:25,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:52:25,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:52:25,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:52:25,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:52:25,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:52:25,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:52:25,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:52:25,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:52:26,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:52:26,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:52:26,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:52:26,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:52:26,047 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:52:26,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label09.c [2020-10-26 23:52:26,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37a2510de/c3ce844ad1814a8b8763a571ba22a7fc/FLAG7dfcb48f7 [2020-10-26 23:52:27,057 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:52:27,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label09.c [2020-10-26 23:52:27,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37a2510de/c3ce844ad1814a8b8763a571ba22a7fc/FLAG7dfcb48f7 [2020-10-26 23:52:27,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37a2510de/c3ce844ad1814a8b8763a571ba22a7fc [2020-10-26 23:52:27,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:52:27,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:52:27,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:52:27,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:52:27,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:52:27,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:27" (1/1) ... [2020-10-26 23:52:27,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2251289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:27, skipping insertion in model container [2020-10-26 23:52:27,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:27" (1/1) ... [2020-10-26 23:52:27,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:52:27,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:52:27,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:52:28,016 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:52:28,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:52:28,280 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:52:28,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28 WrapperNode [2020-10-26 23:52:28,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:52:28,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:52:28,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:52:28,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:52:28,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (1/1) ... [2020-10-26 23:52:28,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (1/1) ... [2020-10-26 23:52:28,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (1/1) ... [2020-10-26 23:52:28,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (1/1) ... [2020-10-26 23:52:28,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (1/1) ... [2020-10-26 23:52:28,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (1/1) ... [2020-10-26 23:52:28,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (1/1) ... [2020-10-26 23:52:28,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:52:28,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:52:28,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:52:28,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:52:28,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (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 23:52:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:52:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:52:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:52:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:52:28,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:52:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:52:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:52:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:52:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:52:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:52:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:52:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:52:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:52:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:52:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:52:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:52:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:52:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:52:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:52:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:52:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:52:31,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:52:31,129 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:52:31,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:31 BoogieIcfgContainer [2020-10-26 23:52:31,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:52:31,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:52:31,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:52:31,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:52:31,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:52:27" (1/3) ... [2020-10-26 23:52:31,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633ccdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:31, skipping insertion in model container [2020-10-26 23:52:31,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:28" (2/3) ... [2020-10-26 23:52:31,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633ccdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:31, skipping insertion in model container [2020-10-26 23:52:31,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:31" (3/3) ... [2020-10-26 23:52:31,145 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label09.c [2020-10-26 23:52:31,157 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:52:31,164 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:52:31,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:52:31,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:52:31,222 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:52:31,222 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:52:31,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:52:31,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:52:31,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:52:31,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:52:31,223 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:52:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:52:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-26 23:52:31,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:31,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:31,272 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:31,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1823802860, now seen corresponding path program 1 times [2020-10-26 23:52:31,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:31,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856830909] [2020-10-26 23:52:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:31,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:31,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 23:52:31,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-26 23:52:31,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:52:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-26 23:52:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:52:32,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:32,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:32,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:32,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:52:32,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:32,195 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 23:52:32,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856830909] [2020-10-26 23:52:32,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:52:32,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:52:32,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212827966] [2020-10-26 23:52:32,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:52:32,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:52:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:52:32,221 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:52:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:37,077 INFO L93 Difference]: Finished difference Result 1189 states and 2186 transitions. [2020-10-26 23:52:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:52:37,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-26 23:52:37,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:37,100 INFO L225 Difference]: With dead ends: 1189 [2020-10-26 23:52:37,101 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:52:37,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:52:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:52:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-26 23:52:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-26 23:52:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1156 transitions. [2020-10-26 23:52:37,225 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1156 transitions. Word has length 54 [2020-10-26 23:52:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:37,226 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1156 transitions. [2020-10-26 23:52:37,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:52:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1156 transitions. [2020-10-26 23:52:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 23:52:37,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:37,233 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:37,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:52:37,234 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:37,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:37,235 INFO L82 PathProgramCache]: Analyzing trace with hash 567254616, now seen corresponding path program 1 times [2020-10-26 23:52:37,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:37,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059362901] [2020-10-26 23:52:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:38,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:52:38,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1245 [2020-10-26 23:52:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:52:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 23:52:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:52:38,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:38,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:38,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:52:38,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:52:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:52:38,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:52:38,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:52:39,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059362901] [2020-10-26 23:52:39,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:39,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:52:39,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809910439] [2020-10-26 23:52:39,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:39,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:39,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:39,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:39,018 INFO L87 Difference]: Start difference. First operand 690 states and 1156 transitions. Second operand 7 states. [2020-10-26 23:52:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:45,899 INFO L93 Difference]: Finished difference Result 2781 states and 4752 transitions. [2020-10-26 23:52:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:52:45,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-26 23:52:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:45,916 INFO L225 Difference]: With dead ends: 2781 [2020-10-26 23:52:45,916 INFO L226 Difference]: Without dead ends: 2097 [2020-10-26 23:52:45,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:52:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2020-10-26 23:52:45,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 2070. [2020-10-26 23:52:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-26 23:52:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3150 transitions. [2020-10-26 23:52:46,008 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3150 transitions. Word has length 124 [2020-10-26 23:52:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:46,009 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 3150 transitions. [2020-10-26 23:52:46,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3150 transitions. [2020-10-26 23:52:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-26 23:52:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:46,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:52:46,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:52:46,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2023263908, now seen corresponding path program 1 times [2020-10-26 23:52:46,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:46,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719530241] [2020-10-26 23:52:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:50,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-26 23:52:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:52:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4109 [2020-10-26 23:52:50,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:52:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:52:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:50,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:50,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:50,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:50,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:52:50,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:50,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:52:50,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:52:50,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:52:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 23:52:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:52:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:52:50,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:52:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:52:50,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719530241] [2020-10-26 23:52:50,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:50,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:50,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215289109] [2020-10-26 23:52:50,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:50,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:50,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:50,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:50,689 INFO L87 Difference]: Start difference. First operand 2070 states and 3150 transitions. Second operand 7 states. [2020-10-26 23:52:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:55,825 INFO L93 Difference]: Finished difference Result 4923 states and 7668 transitions. [2020-10-26 23:52:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:52:55,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-26 23:52:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:55,857 INFO L225 Difference]: With dead ends: 4923 [2020-10-26 23:52:55,857 INFO L226 Difference]: Without dead ends: 2859 [2020-10-26 23:52:55,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:52:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-10-26 23:52:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2762. [2020-10-26 23:52:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-26 23:52:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 3991 transitions. [2020-10-26 23:52:56,006 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 3991 transitions. Word has length 216 [2020-10-26 23:52:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:56,007 INFO L481 AbstractCegarLoop]: Abstraction has 2762 states and 3991 transitions. [2020-10-26 23:52:56,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 3991 transitions. [2020-10-26 23:52:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 23:52:56,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:56,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:52:56,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:52:56,019 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:56,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1030947132, now seen corresponding path program 1 times [2020-10-26 23:52:56,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:56,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971552566] [2020-10-26 23:52:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:56,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 23:52:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:52:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2891 [2020-10-26 23:52:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:52:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 233 [2020-10-26 23:52:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:59,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:59,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:59,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:59,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:52:59,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:59,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:59,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:52:59,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:52:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 23:52:59,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:52:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:52:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:52:59,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:52:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-26 23:52:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:52:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:52:59,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971552566] [2020-10-26 23:52:59,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:59,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:52:59,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117726052] [2020-10-26 23:52:59,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:52:59,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:52:59,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:52:59,940 INFO L87 Difference]: Start difference. First operand 2762 states and 3991 transitions. Second operand 9 states. [2020-10-26 23:53:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:09,062 INFO L93 Difference]: Finished difference Result 8016 states and 11987 transitions. [2020-10-26 23:53:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 23:53:09,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-10-26 23:53:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:09,089 INFO L225 Difference]: With dead ends: 8016 [2020-10-26 23:53:09,089 INFO L226 Difference]: Without dead ends: 5260 [2020-10-26 23:53:09,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-10-26 23:53:09,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2020-10-26 23:53:09,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 4177. [2020-10-26 23:53:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4177 states. [2020-10-26 23:53:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 5601 transitions. [2020-10-26 23:53:09,246 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 5601 transitions. Word has length 228 [2020-10-26 23:53:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:09,247 INFO L481 AbstractCegarLoop]: Abstraction has 4177 states and 5601 transitions. [2020-10-26 23:53:09,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:53:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 5601 transitions. [2020-10-26 23:53:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-26 23:53:09,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:09,262 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:53:09,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:53:09,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:09,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1129595436, now seen corresponding path program 1 times [2020-10-26 23:53:09,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:09,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345150200] [2020-10-26 23:53:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:11,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:14,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-26 23:53:14,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:53:14,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:53:14,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:53:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:53:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:14,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:14,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:53:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:14,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:53:14,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:14,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:53:14,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:53:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:53:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:53:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:15,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:15,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:53:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-26 23:53:15,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:53:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:53:15,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:53:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:15,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:15,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:15,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:15,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:53:15,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:53:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:15,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:15,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:53:15,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:15,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:53:15,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:53:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 280 proven. 194 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-26 23:53:15,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345150200] [2020-10-26 23:53:15,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:15,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:15,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100035469] [2020-10-26 23:53:15,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:15,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:15,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:15,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:15,780 INFO L87 Difference]: Start difference. First operand 4177 states and 5601 transitions. Second operand 7 states. [2020-10-26 23:53:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:19,972 INFO L93 Difference]: Finished difference Result 8122 states and 11053 transitions. [2020-10-26 23:53:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:19,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-26 23:53:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:19,993 INFO L225 Difference]: With dead ends: 8122 [2020-10-26 23:53:19,994 INFO L226 Difference]: Without dead ends: 4202 [2020-10-26 23:53:20,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2020-10-26 23:53:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 4174. [2020-10-26 23:53:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4174 states. [2020-10-26 23:53:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 5251 transitions. [2020-10-26 23:53:20,113 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 5251 transitions. Word has length 478 [2020-10-26 23:53:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:20,114 INFO L481 AbstractCegarLoop]: Abstraction has 4174 states and 5251 transitions. [2020-10-26 23:53:20,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 5251 transitions. [2020-10-26 23:53:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-26 23:53:20,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:20,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:20,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:53:20,129 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:20,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1622103114, now seen corresponding path program 1 times [2020-10-26 23:53:20,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:20,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205481011] [2020-10-26 23:53:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:25,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:25,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-26 23:53:25,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:53:25,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:53:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:53:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:25,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:53:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:26,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:53:26,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:26,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-26 23:53:26,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:26,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:26,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:53:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-26 23:53:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:26,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:26,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:26,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:53:26,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-26 23:53:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:27,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:27,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:53:27,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:53:27,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:53:27,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:27,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 138 proven. 188 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-26 23:53:27,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205481011] [2020-10-26 23:53:27,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:27,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:53:27,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493040947] [2020-10-26 23:53:27,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:53:27,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:27,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:53:27,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:53:27,493 INFO L87 Difference]: Start difference. First operand 4174 states and 5251 transitions. Second operand 8 states. [2020-10-26 23:53:27,756 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 23:53:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:32,297 INFO L93 Difference]: Finished difference Result 8080 states and 10318 transitions. [2020-10-26 23:53:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:53:32,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 501 [2020-10-26 23:53:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:32,320 INFO L225 Difference]: With dead ends: 8080 [2020-10-26 23:53:32,320 INFO L226 Difference]: Without dead ends: 4249 [2020-10-26 23:53:32,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2020-10-26 23:53:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4192. [2020-10-26 23:53:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4192 states. [2020-10-26 23:53:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4192 states to 4192 states and 5285 transitions. [2020-10-26 23:53:32,441 INFO L78 Accepts]: Start accepts. Automaton has 4192 states and 5285 transitions. Word has length 501 [2020-10-26 23:53:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:32,442 INFO L481 AbstractCegarLoop]: Abstraction has 4192 states and 5285 transitions. [2020-10-26 23:53:32,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:53:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4192 states and 5285 transitions. [2020-10-26 23:53:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-26 23:53:32,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:32,466 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:32,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:53:32,466 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1662784312, now seen corresponding path program 1 times [2020-10-26 23:53:32,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:32,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867946693] [2020-10-26 23:53:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 638 [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:37,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:53:37,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:37,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:53:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:53:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:38,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:53:38,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:53:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:53:38,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:53:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:53:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 318 proven. 194 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-26 23:53:38,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867946693] [2020-10-26 23:53:38,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:38,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:38,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428602127] [2020-10-26 23:53:38,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:38,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:38,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:38,847 INFO L87 Difference]: Start difference. First operand 4192 states and 5285 transitions. Second operand 7 states. [2020-10-26 23:53:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:44,470 INFO L93 Difference]: Finished difference Result 10870 states and 14213 transitions. [2020-10-26 23:53:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:44,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 620 [2020-10-26 23:53:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:44,500 INFO L225 Difference]: With dead ends: 10870 [2020-10-26 23:53:44,500 INFO L226 Difference]: Without dead ends: 7021 [2020-10-26 23:53:44,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7021 states. [2020-10-26 23:53:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7021 to 6988. [2020-10-26 23:53:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6988 states. [2020-10-26 23:53:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 8598 transitions. [2020-10-26 23:53:44,682 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 8598 transitions. Word has length 620 [2020-10-26 23:53:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:44,683 INFO L481 AbstractCegarLoop]: Abstraction has 6988 states and 8598 transitions. [2020-10-26 23:53:44,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 8598 transitions. [2020-10-26 23:53:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-26 23:53:44,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:44,697 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:44,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:53:44,697 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:44,698 INFO L82 PathProgramCache]: Analyzing trace with hash -389361048, now seen corresponding path program 1 times [2020-10-26 23:53:44,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:44,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788535301] [2020-10-26 23:53:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:46,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:49,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:49,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 748 [2020-10-26 23:53:49,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 23:53:49,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:53:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:50,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:53:50,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:53:50,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:53:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:53:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:53:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:53:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:53:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 474 proven. 194 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2020-10-26 23:53:50,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788535301] [2020-10-26 23:53:50,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:50,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:53:50,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462004735] [2020-10-26 23:53:50,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:53:50,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:50,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:53:50,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:53:50,961 INFO L87 Difference]: Start difference. First operand 6988 states and 8598 transitions. Second operand 8 states. [2020-10-26 23:53:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:56,291 INFO L93 Difference]: Finished difference Result 16106 states and 20718 transitions. [2020-10-26 23:53:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:53:56,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 728 [2020-10-26 23:53:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:56,324 INFO L225 Difference]: With dead ends: 16106 [2020-10-26 23:53:56,325 INFO L226 Difference]: Without dead ends: 9461 [2020-10-26 23:53:56,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:53:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2020-10-26 23:53:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9414. [2020-10-26 23:53:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9414 states. [2020-10-26 23:53:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9414 states to 9414 states and 11955 transitions. [2020-10-26 23:53:56,625 INFO L78 Accepts]: Start accepts. Automaton has 9414 states and 11955 transitions. Word has length 728 [2020-10-26 23:53:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:56,626 INFO L481 AbstractCegarLoop]: Abstraction has 9414 states and 11955 transitions. [2020-10-26 23:53:56,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:53:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9414 states and 11955 transitions. [2020-10-26 23:53:56,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2020-10-26 23:53:56,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:56,647 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:56,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:53:56,648 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:56,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:56,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1732024528, now seen corresponding path program 1 times [2020-10-26 23:53:56,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:56,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728230015] [2020-10-26 23:53:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-26 23:54:01,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:54:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-26 23:54:01,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:54:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 413 [2020-10-26 23:54:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:02,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:54:02,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:54:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:54:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-26 23:54:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:54:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 23:54:02,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:54:02,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:54:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-26 23:54:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:54:02,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:54:02,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-26 23:54:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-10-26 23:54:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:02,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:54:02,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2020-10-26 23:54:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:02,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:54:02,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:54:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 243 proven. 638 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-26 23:54:03,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728230015] [2020-10-26 23:54:03,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:03,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:03,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114162632] [2020-10-26 23:54:03,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:03,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:03,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:03,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:03,301 INFO L87 Difference]: Start difference. First operand 9414 states and 11955 transitions. Second operand 7 states. [2020-10-26 23:54:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:07,480 INFO L93 Difference]: Finished difference Result 18885 states and 24122 transitions. [2020-10-26 23:54:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:54:07,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 792 [2020-10-26 23:54:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:07,519 INFO L225 Difference]: With dead ends: 18885 [2020-10-26 23:54:07,520 INFO L226 Difference]: Without dead ends: 9814 [2020-10-26 23:54:07,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:54:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2020-10-26 23:54:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 9772. [2020-10-26 23:54:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9772 states. [2020-10-26 23:54:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9772 states to 9772 states and 12346 transitions. [2020-10-26 23:54:07,786 INFO L78 Accepts]: Start accepts. Automaton has 9772 states and 12346 transitions. Word has length 792 [2020-10-26 23:54:07,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:07,788 INFO L481 AbstractCegarLoop]: Abstraction has 9772 states and 12346 transitions. [2020-10-26 23:54:07,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 9772 states and 12346 transitions. [2020-10-26 23:54:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-26 23:54:07,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:07,808 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:07,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:54:07,809 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash -193146912, now seen corresponding path program 1 times [2020-10-26 23:54:07,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:07,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246944710] [2020-10-26 23:54:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:08,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:08,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:08,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:12,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:12,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 820 [2020-10-26 23:54:12,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:54:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 23:54:12,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:54:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 421 [2020-10-26 23:54:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:54:13,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:54:14,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-26 23:54:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-26 23:54:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:14,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-10-26 23:54:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:14,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:54:14,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:54:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:14,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 243 proven. 797 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-26 23:54:16,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246944710] [2020-10-26 23:54:16,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:16,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:54:16,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339926951] [2020-10-26 23:54:16,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:54:16,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:16,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:54:16,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:54:16,058 INFO L87 Difference]: Start difference. First operand 9772 states and 12346 transitions. Second operand 8 states. [2020-10-26 23:54:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:21,164 INFO L93 Difference]: Finished difference Result 19029 states and 25199 transitions. [2020-10-26 23:54:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:54:21,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 800 [2020-10-26 23:54:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:21,205 INFO L225 Difference]: With dead ends: 19029 [2020-10-26 23:54:21,205 INFO L226 Difference]: Without dead ends: 9939 [2020-10-26 23:54:21,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:54:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9939 states. [2020-10-26 23:54:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9939 to 9772. [2020-10-26 23:54:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9772 states. [2020-10-26 23:54:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9772 states to 9772 states and 12341 transitions. [2020-10-26 23:54:21,469 INFO L78 Accepts]: Start accepts. Automaton has 9772 states and 12341 transitions. Word has length 800 [2020-10-26 23:54:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:21,470 INFO L481 AbstractCegarLoop]: Abstraction has 9772 states and 12341 transitions. [2020-10-26 23:54:21,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:54:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9772 states and 12341 transitions. [2020-10-26 23:54:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-26 23:54:21,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:21,489 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:54:21,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:54:21,490 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash -286076118, now seen corresponding path program 1 times [2020-10-26 23:54:21,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:21,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552631192] [2020-10-26 23:54:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:26,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:26,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-26 23:54:26,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:54:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:54:26,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:54:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 493 [2020-10-26 23:54:26,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:26,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:54:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 23:54:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-26 23:54:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:54:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-26 23:54:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:27,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-26 23:54:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:27,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:54:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-26 23:54:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:27,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:27,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:27,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:54:27,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-10-26 23:54:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:27,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:27,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:27,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:54:27,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:54:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 248 proven. 1009 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-26 23:54:28,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552631192] [2020-10-26 23:54:28,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:28,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:54:28,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008521194] [2020-10-26 23:54:28,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:54:28,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:28,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:54:28,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:54:28,491 INFO L87 Difference]: Start difference. First operand 9772 states and 12341 transitions. Second operand 11 states. [2020-10-26 23:54:31,402 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-26 23:54:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:35,466 INFO L93 Difference]: Finished difference Result 19074 states and 25083 transitions. [2020-10-26 23:54:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:54:35,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 809 [2020-10-26 23:54:35,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:35,507 INFO L225 Difference]: With dead ends: 19074 [2020-10-26 23:54:35,507 INFO L226 Difference]: Without dead ends: 9923 [2020-10-26 23:54:35,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:54:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9923 states. [2020-10-26 23:54:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9923 to 9871. [2020-10-26 23:54:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9871 states. [2020-10-26 23:54:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 13132 transitions. [2020-10-26 23:54:35,811 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 13132 transitions. Word has length 809 [2020-10-26 23:54:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:35,811 INFO L481 AbstractCegarLoop]: Abstraction has 9871 states and 13132 transitions. [2020-10-26 23:54:35,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:54:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 13132 transitions. [2020-10-26 23:54:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2020-10-26 23:54:35,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:35,836 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:35,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:54:35,836 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:35,837 INFO L82 PathProgramCache]: Analyzing trace with hash -620790894, now seen corresponding path program 1 times [2020-10-26 23:54:35,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:35,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275551444] [2020-10-26 23:54:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:36,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:39,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 879 [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:54:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:41,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:54:41,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:41,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:54:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:41,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:54:41,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:54:41,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:54:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-26 23:54:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:41,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:54:41,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 23:54:41,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:54:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-26 23:54:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2020-10-26 23:54:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:42,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1817 backedges. 659 proven. 194 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2020-10-26 23:54:42,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275551444] [2020-10-26 23:54:42,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:42,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:42,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749140322] [2020-10-26 23:54:42,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:42,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:42,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:42,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:42,481 INFO L87 Difference]: Start difference. First operand 9871 states and 13132 transitions. Second operand 7 states. [2020-10-26 23:54:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:48,513 INFO L93 Difference]: Finished difference Result 19135 states and 25407 transitions. [2020-10-26 23:54:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:54:48,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 857 [2020-10-26 23:54:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:48,550 INFO L225 Difference]: With dead ends: 19135 [2020-10-26 23:54:48,551 INFO L226 Difference]: Without dead ends: 9913 [2020-10-26 23:54:48,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:54:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2020-10-26 23:54:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 9861. [2020-10-26 23:54:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9861 states. [2020-10-26 23:54:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9861 states to 9861 states and 12890 transitions. [2020-10-26 23:54:48,901 INFO L78 Accepts]: Start accepts. Automaton has 9861 states and 12890 transitions. Word has length 857 [2020-10-26 23:54:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:48,902 INFO L481 AbstractCegarLoop]: Abstraction has 9861 states and 12890 transitions. [2020-10-26 23:54:48,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 9861 states and 12890 transitions. [2020-10-26 23:54:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-10-26 23:54:48,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:48,925 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:48,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:54:48,926 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:48,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1214280080, now seen corresponding path program 1 times [2020-10-26 23:54:48,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:48,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800248085] [2020-10-26 23:54:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:54,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 922 [2020-10-26 23:54:54,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:54:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:54:54,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:54:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-26 23:54:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:54,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:54,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:54:54,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:54,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:54,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:54,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:54,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:54:54,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:54:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:54:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:54:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:54:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:54:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-26 23:54:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-10-26 23:54:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:54,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:54:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:55,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-26 23:54:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:55,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:55,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:54:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:54:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 565 proven. 326 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-26 23:54:55,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800248085] [2020-10-26 23:54:55,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:55,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:55,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706505699] [2020-10-26 23:54:55,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:55,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:55,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:55,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:55,617 INFO L87 Difference]: Start difference. First operand 9861 states and 12890 transitions. Second operand 7 states. [2020-10-26 23:55:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:02,175 INFO L93 Difference]: Finished difference Result 21451 states and 28332 transitions. [2020-10-26 23:55:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:02,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 900 [2020-10-26 23:55:02,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:02,217 INFO L225 Difference]: With dead ends: 21451 [2020-10-26 23:55:02,217 INFO L226 Difference]: Without dead ends: 12278 [2020-10-26 23:55:02,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12278 states. [2020-10-26 23:55:02,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12278 to 12250. [2020-10-26 23:55:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12250 states. [2020-10-26 23:55:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12250 states to 12250 states and 15425 transitions. [2020-10-26 23:55:02,517 INFO L78 Accepts]: Start accepts. Automaton has 12250 states and 15425 transitions. Word has length 900 [2020-10-26 23:55:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:02,518 INFO L481 AbstractCegarLoop]: Abstraction has 12250 states and 15425 transitions. [2020-10-26 23:55:02,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12250 states and 15425 transitions. [2020-10-26 23:55:02,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2020-10-26 23:55:02,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:02,545 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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 23:55:02,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:55:02,546 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:02,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1999428582, now seen corresponding path program 1 times [2020-10-26 23:55:02,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:02,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724127614] [2020-10-26 23:55:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:07,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:07,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-26 23:55:07,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-26 23:55:07,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:55:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:08,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:08,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:55:08,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:08,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:08,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:08,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:08,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:08,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 23:55:08,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:08,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:08,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:55:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:08,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:55:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:08,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:08,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 23:55:08,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:55:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:09,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:09,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:55:09,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:55:09,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:55:09,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:09,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-26 23:55:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:09,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:09,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:55:09,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:55:09,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:55:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 503 proven. 208 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2020-10-26 23:55:09,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724127614] [2020-10-26 23:55:09,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:09,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:09,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461913552] [2020-10-26 23:55:09,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:09,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:09,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:09,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:09,735 INFO L87 Difference]: Start difference. First operand 12250 states and 15425 transitions. Second operand 7 states. [2020-10-26 23:55:14,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:14,536 INFO L93 Difference]: Finished difference Result 22769 states and 28521 transitions. [2020-10-26 23:55:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:55:14,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 923 [2020-10-26 23:55:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:14,581 INFO L225 Difference]: With dead ends: 22769 [2020-10-26 23:55:14,581 INFO L226 Difference]: Without dead ends: 12635 [2020-10-26 23:55:14,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:55:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12635 states. [2020-10-26 23:55:14,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12635 to 12603. [2020-10-26 23:55:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12603 states. [2020-10-26 23:55:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12603 states to 12603 states and 15840 transitions. [2020-10-26 23:55:14,856 INFO L78 Accepts]: Start accepts. Automaton has 12603 states and 15840 transitions. Word has length 923 [2020-10-26 23:55:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:14,857 INFO L481 AbstractCegarLoop]: Abstraction has 12603 states and 15840 transitions. [2020-10-26 23:55:14,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 12603 states and 15840 transitions. [2020-10-26 23:55:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-10-26 23:55:14,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:14,882 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:14,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:55:14,883 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:14,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1053693994, now seen corresponding path program 1 times [2020-10-26 23:55:14,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:14,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429607267] [2020-10-26 23:55:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:20,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-10-26 23:55:20,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:20,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-26 23:55:20,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:55:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:20,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:55:20,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:20,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:20,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:20,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:55:20,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:20,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:20,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:55:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 23:55:20,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:55:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:20,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:55:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:55:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:21,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:21,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:55:21,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:55:21,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:55:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:21,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-26 23:55:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:21,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:21,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:55:21,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:55:21,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:55:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 503 proven. 208 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2020-10-26 23:55:22,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429607267] [2020-10-26 23:55:22,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:22,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:55:22,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459042866] [2020-10-26 23:55:22,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:22,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:22,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:22,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:22,048 INFO L87 Difference]: Start difference. First operand 12603 states and 15840 transitions. Second operand 8 states. [2020-10-26 23:55:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:27,686 INFO L93 Difference]: Finished difference Result 29697 states and 38399 transitions. [2020-10-26 23:55:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:55:27,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 925 [2020-10-26 23:55:27,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:27,742 INFO L225 Difference]: With dead ends: 29697 [2020-10-26 23:55:27,742 INFO L226 Difference]: Without dead ends: 17786 [2020-10-26 23:55:27,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:55:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17786 states. [2020-10-26 23:55:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17786 to 17411. [2020-10-26 23:55:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17411 states. [2020-10-26 23:55:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17411 states to 17411 states and 22508 transitions. [2020-10-26 23:55:28,185 INFO L78 Accepts]: Start accepts. Automaton has 17411 states and 22508 transitions. Word has length 925 [2020-10-26 23:55:28,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:28,186 INFO L481 AbstractCegarLoop]: Abstraction has 17411 states and 22508 transitions. [2020-10-26 23:55:28,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 17411 states and 22508 transitions. [2020-10-26 23:55:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-26 23:55:28,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:28,214 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:55:28,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:55:28,215 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:28,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash -107020010, now seen corresponding path program 1 times [2020-10-26 23:55:28,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:28,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961459195] [2020-10-26 23:55:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 975 [2020-10-26 23:55:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2956 [2020-10-26 23:55:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:55:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-26 23:55:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:31,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:31,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:55:31,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:31,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:31,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:55:31,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:55:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:55:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:55:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-26 23:55:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 812 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-26 23:55:33,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961459195] [2020-10-26 23:55:33,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:33,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:33,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229460681] [2020-10-26 23:55:33,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:33,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:33,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:33,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:33,107 INFO L87 Difference]: Start difference. First operand 17411 states and 22508 transitions. Second operand 7 states. [2020-10-26 23:55:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:37,754 INFO L93 Difference]: Finished difference Result 32438 states and 41798 transitions. [2020-10-26 23:55:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:37,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 957 [2020-10-26 23:55:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:37,804 INFO L225 Difference]: With dead ends: 32438 [2020-10-26 23:55:37,805 INFO L226 Difference]: Without dead ends: 17404 [2020-10-26 23:55:37,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 23:55:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17404 states. [2020-10-26 23:55:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17404 to 17354. [2020-10-26 23:55:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17354 states. [2020-10-26 23:55:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17354 states to 17354 states and 21390 transitions. [2020-10-26 23:55:38,191 INFO L78 Accepts]: Start accepts. Automaton has 17354 states and 21390 transitions. Word has length 957 [2020-10-26 23:55:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:38,192 INFO L481 AbstractCegarLoop]: Abstraction has 17354 states and 21390 transitions. [2020-10-26 23:55:38,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17354 states and 21390 transitions. [2020-10-26 23:55:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2020-10-26 23:55:38,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:38,216 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:38,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:55:38,216 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:38,217 INFO L82 PathProgramCache]: Analyzing trace with hash 582622676, now seen corresponding path program 1 times [2020-10-26 23:55:38,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:38,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855614764] [2020-10-26 23:55:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:38,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-26 23:55:43,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:55:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:55:43,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:55:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:55:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:43,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:55:43,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:55:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:55:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:55:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:55:43,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:43,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:55:43,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:55:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:44,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:44,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:55:44,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:44,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:55:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:55:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:55:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:55:44,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:55:44,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:55:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 696 proven. 2 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2020-10-26 23:55:45,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855614764] [2020-10-26 23:55:45,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:45,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:45,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443087713] [2020-10-26 23:55:45,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:45,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:45,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:45,116 INFO L87 Difference]: Start difference. First operand 17354 states and 21390 transitions. Second operand 7 states. [2020-10-26 23:55:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:52,389 INFO L93 Difference]: Finished difference Result 36826 states and 46109 transitions. [2020-10-26 23:55:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:52,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 970 [2020-10-26 23:55:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:52,442 INFO L225 Difference]: With dead ends: 36826 [2020-10-26 23:55:52,442 INFO L226 Difference]: Without dead ends: 21877 [2020-10-26 23:55:52,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21877 states. [2020-10-26 23:55:52,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21877 to 21510. [2020-10-26 23:55:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21510 states. [2020-10-26 23:55:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21510 states to 21510 states and 26544 transitions. [2020-10-26 23:55:52,892 INFO L78 Accepts]: Start accepts. Automaton has 21510 states and 26544 transitions. Word has length 970 [2020-10-26 23:55:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:52,893 INFO L481 AbstractCegarLoop]: Abstraction has 21510 states and 26544 transitions. [2020-10-26 23:55:52,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 21510 states and 26544 transitions. [2020-10-26 23:55:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2020-10-26 23:55:52,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:52,927 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:52,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:55:52,927 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash -145618782, now seen corresponding path program 1 times [2020-10-26 23:55:52,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:52,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335196958] [2020-10-26 23:55:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking...