/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/Problem18_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:32:43,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:32:43,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:32:43,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:32:43,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:32:43,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:32:43,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:32:43,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:32:43,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:32:43,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:32:43,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:32:43,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:32:43,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:32:43,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:32:43,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:32:43,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:32:43,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:32:43,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:32:43,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:32:43,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:32:43,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:32:43,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:32:43,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:32:43,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:32:43,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:32:43,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:32:43,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:32:43,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:32:43,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:32:43,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:32:43,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:32:43,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:32:43,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:32:43,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:32:43,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:32:43,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:32:43,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:32:43,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:32:43,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:32:43,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:32:43,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:32:43,630 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 [2020-10-27 00:32:43,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:32:43,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:32:43,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:32:43,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:32:43,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:32:43,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:32:43,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:32:43,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:32:43,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:32:43,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:32:43,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:32:43,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:32:43,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:32:43,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:32:43,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:32:43,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:32:43,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:32:43,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:32:43,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:32:43,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:32:43,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:32:43,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:32:43,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:32:43,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:32:43,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:32:43,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:32:43,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:32:43,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:32:43,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:32:43,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:32:44,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:32:44,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:32:44,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:32:44,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:32:44,234 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:32:44,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2020-10-27 00:32:44,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056f57fb3/f40edd383414487797d728f09a1e45b1/FLAGad87a8b65 [2020-10-27 00:32:45,440 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:32:45,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2020-10-27 00:32:45,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056f57fb3/f40edd383414487797d728f09a1e45b1/FLAGad87a8b65 [2020-10-27 00:32:45,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056f57fb3/f40edd383414487797d728f09a1e45b1 [2020-10-27 00:32:45,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:32:45,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:32:45,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:32:45,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:32:45,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:32:45,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:45" (1/1) ... [2020-10-27 00:32:45,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53660c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:45, skipping insertion in model container [2020-10-27 00:32:45,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:45" (1/1) ... [2020-10-27 00:32:45,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:32:46,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:32:47,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:32:47,364 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:32:47,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:32:48,030 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:32:48,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48 WrapperNode [2020-10-27 00:32:48,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:32:48,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:32:48,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:32:48,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:32:48,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2020-10-27 00:32:48,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2020-10-27 00:32:48,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2020-10-27 00:32:48,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2020-10-27 00:32:48,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2020-10-27 00:32:48,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2020-10-27 00:32:48,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2020-10-27 00:32:48,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:32:48,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:32:48,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:32:48,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:32:48,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (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 [2020-10-27 00:32:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:32:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:32:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:32:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:32:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:32:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:32:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:32:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:32:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:32:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:32:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:32:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:32:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:32:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:32:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:32:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:32:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:32:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:32:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:32:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:32:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:32:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:32:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:32:53,207 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:32:53,208 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:32:53,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:53 BoogieIcfgContainer [2020-10-27 00:32:53,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:32:53,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:32:53,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:32:53,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:32:53,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:45" (1/3) ... [2020-10-27 00:32:53,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b19bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:53, skipping insertion in model container [2020-10-27 00:32:53,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (2/3) ... [2020-10-27 00:32:53,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b19bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:53, skipping insertion in model container [2020-10-27 00:32:53,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:53" (3/3) ... [2020-10-27 00:32:53,226 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label44.c [2020-10-27 00:32:53,240 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:32:53,247 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:32:53,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:32:53,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:32:53,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:32:53,305 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:32:53,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:32:53,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:32:53,305 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:32:53,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:32:53,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:32:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:32:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 00:32:53,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:53,354 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] [2020-10-27 00:32:53,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash 600700568, now seen corresponding path program 1 times [2020-10-27 00:32:53,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:53,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913694781] [2020-10-27 00:32:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:53,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:54,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:54,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 00:32:54,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-27 00:32:54,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 00:32:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:32:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:32:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:32:54,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913694781] [2020-10-27 00:32:54,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:32:54,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:32:54,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660461901] [2020-10-27 00:32:54,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:32:54,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:54,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:32:54,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:32:54,512 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:33:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:09,298 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:33:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:33:09,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-27 00:33:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:09,340 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:33:09,340 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:33:09,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:33:09,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:33:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:33:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:33:09,549 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 39 [2020-10-27 00:33:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:09,550 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:33:09,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:33:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:33:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 00:33:09,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:09,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:09,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:33:09,570 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:09,572 INFO L82 PathProgramCache]: Analyzing trace with hash 633685717, now seen corresponding path program 1 times [2020-10-27 00:33:09,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:09,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226876673] [2020-10-27 00:33:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:11,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:11,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:33:11,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:33:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-10-27 00:33:11,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:33:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:33:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 00:33:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:11,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:11,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:11,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:33:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:33:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:33:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:33:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:33:11,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 00:33:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:33:11,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226876673] [2020-10-27 00:33:11,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:33:11,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:33:11,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248051870] [2020-10-27 00:33:11,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:11,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:11,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:11,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:11,648 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-27 00:33:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:23,043 INFO L93 Difference]: Finished difference Result 6479 states and 10917 transitions. [2020-10-27 00:33:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:23,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-27 00:33:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:23,076 INFO L225 Difference]: With dead ends: 6479 [2020-10-27 00:33:23,076 INFO L226 Difference]: Without dead ends: 4349 [2020-10-27 00:33:23,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2020-10-27 00:33:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 3596. [2020-10-27 00:33:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2020-10-27 00:33:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5297 transitions. [2020-10-27 00:33:23,242 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5297 transitions. Word has length 127 [2020-10-27 00:33:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:23,245 INFO L481 AbstractCegarLoop]: Abstraction has 3596 states and 5297 transitions. [2020-10-27 00:33:23,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5297 transitions. [2020-10-27 00:33:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-27 00:33:23,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:23,255 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:33:23,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:33:23,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:23,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1443213094, now seen corresponding path program 1 times [2020-10-27 00:33:23,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:23,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305901851] [2020-10-27 00:33:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:26,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:26,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 00:33:26,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:33:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3256 [2020-10-27 00:33:26,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:33:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:33:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:33:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:26,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:26,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:26,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:33:26,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:33:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:26,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:33:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:26,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:33:26,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:26,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:26,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:33:26,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 00:33:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:33:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:33:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:33:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 62 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:33:27,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305901851] [2020-10-27 00:33:27,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:27,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:27,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571286787] [2020-10-27 00:33:27,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:27,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:27,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:27,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:27,146 INFO L87 Difference]: Start difference. First operand 3596 states and 5297 transitions. Second operand 7 states. [2020-10-27 00:33:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:38,553 INFO L93 Difference]: Finished difference Result 8762 states and 12723 transitions. [2020-10-27 00:33:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:38,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-27 00:33:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:38,583 INFO L225 Difference]: With dead ends: 8762 [2020-10-27 00:33:38,584 INFO L226 Difference]: Without dead ends: 5172 [2020-10-27 00:33:38,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:33:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2020-10-27 00:33:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 5098. [2020-10-27 00:33:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5098 states. [2020-10-27 00:33:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 7135 transitions. [2020-10-27 00:33:38,742 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 7135 transitions. Word has length 198 [2020-10-27 00:33:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:38,743 INFO L481 AbstractCegarLoop]: Abstraction has 5098 states and 7135 transitions. [2020-10-27 00:33:38,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 7135 transitions. [2020-10-27 00:33:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-27 00:33:38,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:38,748 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:33:38,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:33:38,749 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash 262741974, now seen corresponding path program 1 times [2020-10-27 00:33:38,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:38,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925462091] [2020-10-27 00:33:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 00:33:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:33:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4498 [2020-10-27 00:33:43,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:33:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:33:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:33:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:43,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:43,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:43,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:33:43,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:33:43,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:43,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:43,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:43,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:33:43,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 00:33:43,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:33:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:33:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:44,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:44,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:33:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:33:44,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:33:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 62 proven. 83 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:33:44,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925462091] [2020-10-27 00:33:44,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:44,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:44,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042303550] [2020-10-27 00:33:44,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:44,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:44,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:44,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:44,225 INFO L87 Difference]: Start difference. First operand 5098 states and 7135 transitions. Second operand 7 states. [2020-10-27 00:33:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:59,735 INFO L93 Difference]: Finished difference Result 14140 states and 21030 transitions. [2020-10-27 00:33:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:33:59,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-27 00:33:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:59,793 INFO L225 Difference]: With dead ends: 14140 [2020-10-27 00:33:59,793 INFO L226 Difference]: Without dead ends: 9048 [2020-10-27 00:33:59,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:33:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9048 states. [2020-10-27 00:34:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9048 to 8106. [2020-10-27 00:34:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8106 states. [2020-10-27 00:34:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 10657 transitions. [2020-10-27 00:34:00,208 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 10657 transitions. Word has length 249 [2020-10-27 00:34:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:00,210 INFO L481 AbstractCegarLoop]: Abstraction has 8106 states and 10657 transitions. [2020-10-27 00:34:00,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:34:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 10657 transitions. [2020-10-27 00:34:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-27 00:34:00,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:00,220 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:00,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:34:00,221 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash -514884493, now seen corresponding path program 1 times [2020-10-27 00:34:00,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:00,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326320495] [2020-10-27 00:34:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:00,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:05,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:05,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-27 00:34:05,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:34:05,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 00:34:05,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:34:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:34:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-27 00:34:05,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:34:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:05,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:05,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:05,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:34:05,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:34:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 00:34:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:05,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:05,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:34:05,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-27 00:34:05,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:05,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:34:05,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:05,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:34:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:06,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:34:06,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:34:06,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:34:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-27 00:34:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:06,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:06,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:34:06,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:34:06,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:34:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 98 proven. 217 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 00:34:06,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326320495] [2020-10-27 00:34:06,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:06,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:34:06,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773508951] [2020-10-27 00:34:06,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:34:06,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:34:06,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:34:06,550 INFO L87 Difference]: Start difference. First operand 8106 states and 10657 transitions. Second operand 8 states. [2020-10-27 00:34:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:19,500 INFO L93 Difference]: Finished difference Result 18551 states and 24081 transitions. [2020-10-27 00:34:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:34:19,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 385 [2020-10-27 00:34:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:19,564 INFO L225 Difference]: With dead ends: 18551 [2020-10-27 00:34:19,565 INFO L226 Difference]: Without dead ends: 10451 [2020-10-27 00:34:19,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:34:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10451 states. [2020-10-27 00:34:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10451 to 10276. [2020-10-27 00:34:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10276 states. [2020-10-27 00:34:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10276 states to 10276 states and 12955 transitions. [2020-10-27 00:34:19,861 INFO L78 Accepts]: Start accepts. Automaton has 10276 states and 12955 transitions. Word has length 385 [2020-10-27 00:34:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:19,862 INFO L481 AbstractCegarLoop]: Abstraction has 10276 states and 12955 transitions. [2020-10-27 00:34:19,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:34:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10276 states and 12955 transitions. [2020-10-27 00:34:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-27 00:34:19,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:19,873 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:19,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:34:19,873 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:19,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1269321239, now seen corresponding path program 1 times [2020-10-27 00:34:19,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:19,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395720307] [2020-10-27 00:34:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:21,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:24,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-27 00:34:24,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:34:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4691 [2020-10-27 00:34:24,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:34:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:34:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:34:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:25,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:25,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:34:25,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 00:34:25,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:34:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:34:25,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:34:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:25,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:25,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:25,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:25,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 00:34:25,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:34:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:34:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:34:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:25,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:25,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:34:25,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:34:25,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:34:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:34:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 216 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 00:34:25,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395720307] [2020-10-27 00:34:25,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:25,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:34:25,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739928557] [2020-10-27 00:34:25,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:25,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:25,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:25,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:25,982 INFO L87 Difference]: Start difference. First operand 10276 states and 12955 transitions. Second operand 7 states. [2020-10-27 00:34:43,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:43,636 INFO L93 Difference]: Finished difference Result 22135 states and 28472 transitions. [2020-10-27 00:34:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:34:43,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-27 00:34:43,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:43,673 INFO L225 Difference]: With dead ends: 22135 [2020-10-27 00:34:43,673 INFO L226 Difference]: Without dead ends: 11047 [2020-10-27 00:34:43,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:34:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11047 states. [2020-10-27 00:34:43,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11047 to 9535. [2020-10-27 00:34:43,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9535 states. [2020-10-27 00:34:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 11059 transitions. [2020-10-27 00:34:43,949 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 11059 transitions. Word has length 435 [2020-10-27 00:34:43,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:43,950 INFO L481 AbstractCegarLoop]: Abstraction has 9535 states and 11059 transitions. [2020-10-27 00:34:43,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:34:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 11059 transitions. [2020-10-27 00:34:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-27 00:34:43,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:43,967 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:43,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:34:43,968 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:43,969 INFO L82 PathProgramCache]: Analyzing trace with hash -14417275, now seen corresponding path program 1 times [2020-10-27 00:34:43,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:43,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736987348] [2020-10-27 00:34:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:49,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-27 00:34:49,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:34:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 00:34:49,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:34:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:34:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:34:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:49,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:49,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:49,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:34:49,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:34:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:49,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:50,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:34:50,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-27 00:34:50,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:50,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:34:50,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:50,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:34:50,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:34:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:50,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:50,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:34:50,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:34:50,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:34:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:34:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:34:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:50,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:50,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:50,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:34:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:34:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-27 00:34:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:50,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:34:50,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:34:50,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:34:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 93 proven. 200 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 00:34:51,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736987348] [2020-10-27 00:34:51,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:51,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:34:51,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910247821] [2020-10-27 00:34:51,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:34:51,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:51,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:34:51,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:34:51,224 INFO L87 Difference]: Start difference. First operand 9535 states and 11059 transitions. Second operand 9 states. [2020-10-27 00:35:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:02,078 INFO L93 Difference]: Finished difference Result 26069 states and 33032 transitions. [2020-10-27 00:35:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 00:35:02,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 556 [2020-10-27 00:35:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:02,167 INFO L225 Difference]: With dead ends: 26069 [2020-10-27 00:35:02,167 INFO L226 Difference]: Without dead ends: 17242 [2020-10-27 00:35:02,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-27 00:35:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2020-10-27 00:35:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 16186. [2020-10-27 00:35:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16186 states. [2020-10-27 00:35:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16186 states to 16186 states and 18676 transitions. [2020-10-27 00:35:02,674 INFO L78 Accepts]: Start accepts. Automaton has 16186 states and 18676 transitions. Word has length 556 [2020-10-27 00:35:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:02,676 INFO L481 AbstractCegarLoop]: Abstraction has 16186 states and 18676 transitions. [2020-10-27 00:35:02,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:35:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16186 states and 18676 transitions. [2020-10-27 00:35:02,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2020-10-27 00:35:02,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:02,729 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:02,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:35:02,730 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:02,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2146644164, now seen corresponding path program 1 times [2020-10-27 00:35:02,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:02,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546000723] [2020-10-27 00:35:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:03,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:08,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:08,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1107 [2020-10-27 00:35:08,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:35:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-27 00:35:08,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:08,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:08,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:35:08,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:35:08,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:08,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:08,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:08,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:08,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:35:08,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:08,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:08,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:08,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:08,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:08,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:35:08,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:35:08,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:35:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:08,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:08,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:35:08,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:08,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:35:08,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:08,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:35:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:09,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:09,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:35:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:09,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:09,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:35:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:09,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:35:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:09,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:35:09,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:35:09,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:35:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:35:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:09,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:09,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:35:09,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:09,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:35:09,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:35:09,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 378 proven. 87 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-27 00:35:10,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546000723] [2020-10-27 00:35:10,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:35:10,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:35:10,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654531647] [2020-10-27 00:35:10,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:10,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:10,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:10,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:10,734 INFO L87 Difference]: Start difference. First operand 16186 states and 18676 transitions. Second operand 7 states. [2020-10-27 00:35:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:27,235 INFO L93 Difference]: Finished difference Result 37692 states and 45492 transitions. [2020-10-27 00:35:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:35:27,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1083 [2020-10-27 00:35:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:27,316 INFO L225 Difference]: With dead ends: 37692 [2020-10-27 00:35:27,317 INFO L226 Difference]: Without dead ends: 22924 [2020-10-27 00:35:27,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:35:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22924 states. [2020-10-27 00:35:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22924 to 22797. [2020-10-27 00:35:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22797 states. [2020-10-27 00:35:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22797 states to 22797 states and 26222 transitions. [2020-10-27 00:35:27,986 INFO L78 Accepts]: Start accepts. Automaton has 22797 states and 26222 transitions. Word has length 1083 [2020-10-27 00:35:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:27,988 INFO L481 AbstractCegarLoop]: Abstraction has 22797 states and 26222 transitions. [2020-10-27 00:35:27,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 22797 states and 26222 transitions. [2020-10-27 00:35:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1160 [2020-10-27 00:35:28,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:28,013 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:28,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:35:28,014 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:28,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1708371881, now seen corresponding path program 1 times [2020-10-27 00:35:28,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:28,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396130042] [2020-10-27 00:35:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:33,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:33,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1185 [2020-10-27 00:35:33,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:35:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 00:35:33,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:35:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:35:33,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:33,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:33,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:33,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:35:33,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:33,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:35:33,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:35:33,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:33,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:33,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:34,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:34,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:35:34,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:35:34,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:35:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:34,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:35:34,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:35:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:35:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:34,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:34,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:35:34,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:35:34,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:35:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:35:34,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:34,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:35:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:34,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:34,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:35:34,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:35:34,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:35:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:35:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:34,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:34,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:35:34,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:35:34,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:35:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2020-10-27 00:35:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:35,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:35,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:35:35,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:35:35,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:35:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 325 proven. 148 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2020-10-27 00:35:35,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396130042] [2020-10-27 00:35:35,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:35:35,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:35:35,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493397817] [2020-10-27 00:35:35,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:35,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:35,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:35,786 INFO L87 Difference]: Start difference. First operand 22797 states and 26222 transitions. Second operand 7 states. [2020-10-27 00:35:46,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:46,391 INFO L93 Difference]: Finished difference Result 55760 states and 65914 transitions. [2020-10-27 00:35:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:35:46,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1159 [2020-10-27 00:35:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:46,647 INFO L225 Difference]: With dead ends: 55760 [2020-10-27 00:35:46,647 INFO L226 Difference]: Without dead ends: 34381 [2020-10-27 00:35:46,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:35:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34381 states. [2020-10-27 00:35:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34381 to 34321. [2020-10-27 00:35:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34321 states. [2020-10-27 00:35:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34321 states to 34321 states and 40333 transitions. [2020-10-27 00:35:47,411 INFO L78 Accepts]: Start accepts. Automaton has 34321 states and 40333 transitions. Word has length 1159 [2020-10-27 00:35:47,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:47,413 INFO L481 AbstractCegarLoop]: Abstraction has 34321 states and 40333 transitions. [2020-10-27 00:35:47,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 34321 states and 40333 transitions. [2020-10-27 00:35:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1227 [2020-10-27 00:35:47,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:47,442 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:47,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:35:47,443 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1996007555, now seen corresponding path program 1 times [2020-10-27 00:35:47,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:47,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958081166] [2020-10-27 00:35:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:52,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1252 [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:35:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:53,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:53,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:53,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:35:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:53,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:53,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:35:53,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 00:35:53,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:53,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:53,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:35:53,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:35:53,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:35:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:53,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:53,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:35:53,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:35:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:35:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:53,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:53,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:35:53,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:35:53,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:35:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:54,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:35:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:35:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:54,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:54,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:35:54,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:35:54,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:35:54,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:35:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:54,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:54,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:35:54,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:35:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:35:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 534 proven. 87 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2020-10-27 00:35:55,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958081166] [2020-10-27 00:35:55,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:35:55,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:35:55,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22614097] [2020-10-27 00:35:55,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:55,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:55,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:55,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:55,461 INFO L87 Difference]: Start difference. First operand 34321 states and 40333 transitions. Second operand 7 states. [2020-10-27 00:36:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:09,369 INFO L93 Difference]: Finished difference Result 77261 states and 92722 transitions. [2020-10-27 00:36:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:36:09,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1226 [2020-10-27 00:36:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:09,504 INFO L225 Difference]: With dead ends: 77261 [2020-10-27 00:36:09,504 INFO L226 Difference]: Without dead ends: 44358 [2020-10-27 00:36:09,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:36:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44358 states. [2020-10-27 00:36:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44358 to 44285. [2020-10-27 00:36:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44285 states. [2020-10-27 00:36:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44285 states to 44285 states and 51713 transitions. [2020-10-27 00:36:10,555 INFO L78 Accepts]: Start accepts. Automaton has 44285 states and 51713 transitions. Word has length 1226 [2020-10-27 00:36:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:10,558 INFO L481 AbstractCegarLoop]: Abstraction has 44285 states and 51713 transitions. [2020-10-27 00:36:10,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 44285 states and 51713 transitions. [2020-10-27 00:36:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2020-10-27 00:36:10,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:10,585 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:10,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:36:10,586 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:10,587 INFO L82 PathProgramCache]: Analyzing trace with hash 790742784, now seen corresponding path program 1 times [2020-10-27 00:36:10,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:10,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229161445] [2020-10-27 00:36:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:16,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1315 [2020-10-27 00:36:16,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:36:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 00:36:16,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:36:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:36:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:16,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:16,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:16,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:36:16,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:16,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:36:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:16,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:16,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:36:16,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:16,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:36:16,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:36:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:36:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:17,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:36:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:36:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:36:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:17,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:17,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:36:17,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:36:17,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:17,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:17,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:36:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:17,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:17,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:36:17,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:36:17,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:36:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:17,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:17,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:36:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:36:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:36:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:36:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:17,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:17,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:36:17,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:17,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:36:17,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:36:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:17,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1168 [2020-10-27 00:36:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 493 proven. 71 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2020-10-27 00:36:18,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229161445] [2020-10-27 00:36:18,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:18,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:36:18,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618326991] [2020-10-27 00:36:18,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:18,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:18,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:18,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:18,258 INFO L87 Difference]: Start difference. First operand 44285 states and 51713 transitions. Second operand 7 states.