/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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:28:47,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:28:47,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:28:47,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:28:47,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:28:47,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:28:47,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:28:47,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:28:47,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:28:47,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:28:47,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:28:47,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:28:47,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:28:47,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:28:47,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:28:47,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:28:47,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:28:47,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:28:47,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:28:47,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:28:47,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:28:47,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:28:47,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:28:47,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:28:47,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:28:47,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:28:47,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:28:47,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:28:47,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:28:47,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:28:47,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:28:47,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:28:47,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:28:47,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:28:47,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:28:47,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:28:47,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:28:47,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:28:47,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:28:47,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:28:47,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:28:47,523 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 00:28:47,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:28:47,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:28:47,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:28:47,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:28:47,552 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:28:47,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:28:47,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:28:47,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:28:47,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:28:47,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:28:47,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:28:47,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:28:47,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:28:47,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:28:47,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:28:47,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:28:47,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:28:47,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:28:47,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:28:47,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:28:47,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:28:47,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:28:47,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:28:47,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:28:47,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:28:47,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:28:47,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:28:47,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:28:47,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:28:47,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:28:48,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:28:48,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:28:48,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:28:48,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:28:48,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:28:48,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2020-10-27 00:28:48,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc3320145/e0e6a8f9efe04142b16f647baa1e9561/FLAG77a300f0f [2020-10-27 00:28:49,090 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:28:49,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2020-10-27 00:28:49,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc3320145/e0e6a8f9efe04142b16f647baa1e9561/FLAG77a300f0f [2020-10-27 00:28:49,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc3320145/e0e6a8f9efe04142b16f647baa1e9561 [2020-10-27 00:28:49,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:28:49,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:28:49,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:49,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:28:49,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:28:49,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:49" (1/1) ... [2020-10-27 00:28:49,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8cdb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:49, skipping insertion in model container [2020-10-27 00:28:49,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:49" (1/1) ... [2020-10-27 00:28:49,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:28:49,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:28:51,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:51,161 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:28:51,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:51,706 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:28:51,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51 WrapperNode [2020-10-27 00:28:51,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:51,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:28:51,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:28:51,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:28:51,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:52,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:28:52,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:28:52,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:28:52,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:28:52,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (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 00:28:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:28:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:28:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:28:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:28:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:28:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:28:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:28:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:28:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:28:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:28:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:28:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:28:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:28:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:28:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:28:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:28:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:28:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:28:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:28:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:28:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:28:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:28:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:28:57,762 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:28:57,763 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:28:57,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:57 BoogieIcfgContainer [2020-10-27 00:28:57,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:28:57,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:28:57,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:28:57,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:28:57,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:28:49" (1/3) ... [2020-10-27 00:28:57,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b4ea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:57, skipping insertion in model container [2020-10-27 00:28:57,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (2/3) ... [2020-10-27 00:28:57,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b4ea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:57, skipping insertion in model container [2020-10-27 00:28:57,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:57" (3/3) ... [2020-10-27 00:28:57,782 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label28.c [2020-10-27 00:28:57,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:28:57,803 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:28:57,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:28:57,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:28:57,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:28:57,860 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:28:57,860 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:28:57,860 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:28:57,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:28:57,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:28:57,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:28:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:28:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 00:28:57,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:57,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:57,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:57,955 INFO L82 PathProgramCache]: Analyzing trace with hash -901646568, now seen corresponding path program 1 times [2020-10-27 00:28:57,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:57,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009952016] [2020-10-27 00:28:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:58,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:58,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 00:28:58,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 00:28:58,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:28:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:28:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:59,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:59,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:59,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:59,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:28:59,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:59,194 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 00:28:59,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009952016] [2020-10-27 00:28:59,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:59,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:28:59,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091317497] [2020-10-27 00:28:59,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:28:59,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:59,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:28:59,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:28:59,223 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:29:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:13,705 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 00:29:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:29:13,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-27 00:29:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:13,750 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:29:13,750 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:29:13,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:29:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:29:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:29:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3228 transitions. [2020-10-27 00:29:13,993 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3228 transitions. Word has length 71 [2020-10-27 00:29:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:13,996 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3228 transitions. [2020-10-27 00:29:13,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:29:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3228 transitions. [2020-10-27 00:29:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 00:29:14,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:14,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:14,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:29:14,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:14,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:14,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1507283535, now seen corresponding path program 1 times [2020-10-27 00:29:14,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:14,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862500103] [2020-10-27 00:29:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:15,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:16,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:16,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 00:29:16,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:29:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2715 [2020-10-27 00:29:16,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:29:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:29:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:17,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:29:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:17,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:17,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:17,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:29:17,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:29:17,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:29:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:17,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862500103] [2020-10-27 00:29:17,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:17,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:29:17,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436539000] [2020-10-27 00:29:17,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:17,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:17,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:17,355 INFO L87 Difference]: Start difference. First operand 2136 states and 3228 transitions. Second operand 7 states. [2020-10-27 00:29:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:29,011 INFO L93 Difference]: Finished difference Result 6501 states and 9924 transitions. [2020-10-27 00:29:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:29,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-27 00:29:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:29,041 INFO L225 Difference]: With dead ends: 6501 [2020-10-27 00:29:29,041 INFO L226 Difference]: Without dead ends: 4371 [2020-10-27 00:29:29,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 00:29:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2020-10-27 00:29:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 4306. [2020-10-27 00:29:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4306 states. [2020-10-27 00:29:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 5737 transitions. [2020-10-27 00:29:29,179 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 5737 transitions. Word has length 141 [2020-10-27 00:29:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:29,179 INFO L481 AbstractCegarLoop]: Abstraction has 4306 states and 5737 transitions. [2020-10-27 00:29:29,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 5737 transitions. [2020-10-27 00:29:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 00:29:29,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:29,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:29,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:29:29,183 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:29,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:29,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1810046801, now seen corresponding path program 1 times [2020-10-27 00:29:29,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:29,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210250491] [2020-10-27 00:29:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:31,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:31,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 00:29:31,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:29:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2364 [2020-10-27 00:29:31,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:29:31,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:31,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:31,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:31,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:29:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:31,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:31,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:31,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:29:31,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:29:31,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:29:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:32,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210250491] [2020-10-27 00:29:32,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:32,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:29:32,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484460513] [2020-10-27 00:29:32,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:29:32,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:32,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:29:32,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:29:32,647 INFO L87 Difference]: Start difference. First operand 4306 states and 5737 transitions. Second operand 8 states. [2020-10-27 00:29:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:45,561 INFO L93 Difference]: Finished difference Result 12287 states and 16681 transitions. [2020-10-27 00:29:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:45,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-27 00:29:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:45,605 INFO L225 Difference]: With dead ends: 12287 [2020-10-27 00:29:45,605 INFO L226 Difference]: Without dead ends: 7987 [2020-10-27 00:29:45,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:29:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7987 states. [2020-10-27 00:29:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7987 to 7250. [2020-10-27 00:29:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7250 states. [2020-10-27 00:29:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7250 states to 7250 states and 9110 transitions. [2020-10-27 00:29:45,820 INFO L78 Accepts]: Start accepts. Automaton has 7250 states and 9110 transitions. Word has length 168 [2020-10-27 00:29:45,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:45,820 INFO L481 AbstractCegarLoop]: Abstraction has 7250 states and 9110 transitions. [2020-10-27 00:29:45,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:29:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7250 states and 9110 transitions. [2020-10-27 00:29:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 00:29:45,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:45,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:45,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:29:45,824 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1488111207, now seen corresponding path program 1 times [2020-10-27 00:29:45,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:45,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175200762] [2020-10-27 00:29:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 00:29:47,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:29:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-27 00:29:47,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:29:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-27 00:29:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:47,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:47,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:47,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:29:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:47,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:29:47,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 00:29:47,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:29:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 00:29:48,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175200762] [2020-10-27 00:29:48,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:48,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:29:48,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561703690] [2020-10-27 00:29:48,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:29:48,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:48,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:29:48,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:29:48,140 INFO L87 Difference]: Start difference. First operand 7250 states and 9110 transitions. Second operand 6 states. [2020-10-27 00:29:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:59,687 INFO L93 Difference]: Finished difference Result 18236 states and 23450 transitions. [2020-10-27 00:29:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:29:59,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2020-10-27 00:29:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:59,748 INFO L225 Difference]: With dead ends: 18236 [2020-10-27 00:29:59,748 INFO L226 Difference]: Without dead ends: 10992 [2020-10-27 00:29:59,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:29:59,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2020-10-27 00:30:00,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 10205. [2020-10-27 00:30:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10205 states. [2020-10-27 00:30:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 12548 transitions. [2020-10-27 00:30:00,058 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 12548 transitions. Word has length 257 [2020-10-27 00:30:00,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:00,060 INFO L481 AbstractCegarLoop]: Abstraction has 10205 states and 12548 transitions. [2020-10-27 00:30:00,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:30:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 12548 transitions. [2020-10-27 00:30:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-27 00:30:00,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:00,073 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:30:00,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:30:00,074 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:00,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:00,080 INFO L82 PathProgramCache]: Analyzing trace with hash 457462815, now seen corresponding path program 1 times [2020-10-27 00:30:00,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:00,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448227838] [2020-10-27 00:30:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:05,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:05,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-27 00:30:05,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:30:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 00:30:05,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:05,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:05,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:30:05,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:30:05,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:05,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:05,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:30:05,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:05,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:05,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:30:05,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:05,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:30:05,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:30:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:05,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:30:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:05,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:06,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:06,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:06,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 00:30:06,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:30:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:06,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:06,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:30:06,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:30:06,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:30:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:06,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 312 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:30:06,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448227838] [2020-10-27 00:30:06,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:06,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:06,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202037143] [2020-10-27 00:30:06,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:06,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:06,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:06,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:06,929 INFO L87 Difference]: Start difference. First operand 10205 states and 12548 transitions. Second operand 7 states. [2020-10-27 00:30:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:16,199 INFO L93 Difference]: Finished difference Result 20737 states and 25564 transitions. [2020-10-27 00:30:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:16,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2020-10-27 00:30:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:16,240 INFO L225 Difference]: With dead ends: 20737 [2020-10-27 00:30:16,240 INFO L226 Difference]: Without dead ends: 10312 [2020-10-27 00:30:16,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:30:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10312 states. [2020-10-27 00:30:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10312 to 10209. [2020-10-27 00:30:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10209 states. [2020-10-27 00:30:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10209 states to 10209 states and 11501 transitions. [2020-10-27 00:30:16,499 INFO L78 Accepts]: Start accepts. Automaton has 10209 states and 11501 transitions. Word has length 452 [2020-10-27 00:30:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:16,500 INFO L481 AbstractCegarLoop]: Abstraction has 10209 states and 11501 transitions. [2020-10-27 00:30:16,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 10209 states and 11501 transitions. [2020-10-27 00:30:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-27 00:30:16,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:16,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 00:30:16,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:30:16,512 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:16,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2097100482, now seen corresponding path program 1 times [2020-10-27 00:30:16,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:16,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047526437] [2020-10-27 00:30:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-27 00:30:21,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 00:30:21,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:30:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:30:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:21,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:30:21,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:22,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:22,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-27 00:30:22,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:30:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:22,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:30:22,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:30:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:30:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:22,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:30:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:22,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:22,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:30:22,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:30:22,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:30:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 126 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:30:23,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047526437] [2020-10-27 00:30:23,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:23,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:30:23,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354162212] [2020-10-27 00:30:23,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:30:23,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:23,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:30:23,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:30:23,266 INFO L87 Difference]: Start difference. First operand 10209 states and 11501 transitions. Second operand 8 states. [2020-10-27 00:30:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:35,839 INFO L93 Difference]: Finished difference Result 28559 states and 33002 transitions. [2020-10-27 00:30:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:35,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 475 [2020-10-27 00:30:35,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:35,898 INFO L225 Difference]: With dead ends: 28559 [2020-10-27 00:30:35,898 INFO L226 Difference]: Without dead ends: 18356 [2020-10-27 00:30:35,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:30:35,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18356 states. [2020-10-27 00:30:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18356 to 17555. [2020-10-27 00:30:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17555 states. [2020-10-27 00:30:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17555 states to 17555 states and 19941 transitions. [2020-10-27 00:30:36,333 INFO L78 Accepts]: Start accepts. Automaton has 17555 states and 19941 transitions. Word has length 475 [2020-10-27 00:30:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:36,334 INFO L481 AbstractCegarLoop]: Abstraction has 17555 states and 19941 transitions. [2020-10-27 00:30:36,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:30:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 17555 states and 19941 transitions. [2020-10-27 00:30:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-27 00:30:36,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:36,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:30:36,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:30:36,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:36,378 INFO L82 PathProgramCache]: Analyzing trace with hash -684278777, now seen corresponding path program 1 times [2020-10-27 00:30:36,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:36,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286811179] [2020-10-27 00:30:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:41,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1049 [2020-10-27 00:30:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4646 [2020-10-27 00:30:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:30:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:30:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:41,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:30:41,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:41,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:41,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:41,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:30:41,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:41,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:41,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:42,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:42,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:42,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:42,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:30:42,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:42,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:42,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:30:42,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:42,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:42,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:42,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:42,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 00:30:42,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:42,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:42,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:30:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:42,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:42,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:42,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:30:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:30:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:43,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:43,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:43,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:43,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:30:43,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:43,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:43,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:43,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 435 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:30:43,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286811179] [2020-10-27 00:30:43,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:43,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:43,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225829737] [2020-10-27 00:30:43,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:43,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:43,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:43,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:43,782 INFO L87 Difference]: Start difference. First operand 17555 states and 19941 transitions. Second operand 7 states. [2020-10-27 00:30:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:58,840 INFO L93 Difference]: Finished difference Result 43200 states and 50290 transitions. [2020-10-27 00:30:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:58,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1027 [2020-10-27 00:30:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:58,943 INFO L225 Difference]: With dead ends: 43200 [2020-10-27 00:30:58,943 INFO L226 Difference]: Without dead ends: 25651 [2020-10-27 00:30:58,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 00:30:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25651 states. [2020-10-27 00:30:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25651 to 24836. [2020-10-27 00:30:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24836 states. [2020-10-27 00:30:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24836 states to 24836 states and 28070 transitions. [2020-10-27 00:30:59,829 INFO L78 Accepts]: Start accepts. Automaton has 24836 states and 28070 transitions. Word has length 1027 [2020-10-27 00:30:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:59,832 INFO L481 AbstractCegarLoop]: Abstraction has 24836 states and 28070 transitions. [2020-10-27 00:30:59,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 24836 states and 28070 transitions. [2020-10-27 00:30:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2020-10-27 00:30:59,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:59,921 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 00:30:59,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:30:59,921 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:59,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1617940500, now seen corresponding path program 1 times [2020-10-27 00:30:59,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:59,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963064840] [2020-10-27 00:30:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-27 00:31:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-27 00:31:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:31:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:05,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:31:05,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:06,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:31:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:06,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:06,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:06,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:06,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-27 00:31:06,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:06,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:31:06,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:06,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:31:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:31:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:31:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:31:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:07,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:07,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:07,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:31:07,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:31:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 414 proven. 75 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2020-10-27 00:31:07,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963064840] [2020-10-27 00:31:07,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:07,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:07,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285181920] [2020-10-27 00:31:07,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:07,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:07,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:07,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:07,859 INFO L87 Difference]: Start difference. First operand 24836 states and 28070 transitions. Second operand 7 states. [2020-10-27 00:31:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:17,934 INFO L93 Difference]: Finished difference Result 63255 states and 72572 transitions. [2020-10-27 00:31:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:17,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1103 [2020-10-27 00:31:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:18,050 INFO L225 Difference]: With dead ends: 63255 [2020-10-27 00:31:18,050 INFO L226 Difference]: Without dead ends: 38425 [2020-10-27 00:31:18,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38425 states. [2020-10-27 00:31:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38425 to 36226. [2020-10-27 00:31:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36226 states. [2020-10-27 00:31:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36226 states to 36226 states and 41512 transitions. [2020-10-27 00:31:18,827 INFO L78 Accepts]: Start accepts. Automaton has 36226 states and 41512 transitions. Word has length 1103 [2020-10-27 00:31:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:18,830 INFO L481 AbstractCegarLoop]: Abstraction has 36226 states and 41512 transitions. [2020-10-27 00:31:18,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 36226 states and 41512 transitions. [2020-10-27 00:31:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1235 [2020-10-27 00:31:18,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:18,855 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:31:18,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:31:18,856 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:18,856 INFO L82 PathProgramCache]: Analyzing trace with hash -806208561, now seen corresponding path program 1 times [2020-10-27 00:31:18,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:18,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192386576] [2020-10-27 00:31:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:19,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1260 [2020-10-27 00:31:24,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 00:31:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:31:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:31:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:24,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:31:24,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:24,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:31:24,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:24,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:31:24,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:24,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:24,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:25,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:31:25,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:25,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:25,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:25,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:25,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:31:25,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:31:25,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:31:25,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:31:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:31:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:31:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1082 [2020-10-27 00:31:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:31:25,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:31:25,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:31:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 619 proven. 88 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2020-10-27 00:31:26,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192386576] [2020-10-27 00:31:26,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:26,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:26,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507569431] [2020-10-27 00:31:26,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:26,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:26,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:26,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:26,476 INFO L87 Difference]: Start difference. First operand 36226 states and 41512 transitions. Second operand 7 states. [2020-10-27 00:31:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:38,655 INFO L93 Difference]: Finished difference Result 82534 states and 95559 transitions. [2020-10-27 00:31:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:31:38,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1234 [2020-10-27 00:31:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:38,797 INFO L225 Difference]: With dead ends: 82534 [2020-10-27 00:31:38,797 INFO L226 Difference]: Without dead ends: 46314 [2020-10-27 00:31:38,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:31:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46314 states. [2020-10-27 00:31:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46314 to 46204. [2020-10-27 00:31:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46204 states. [2020-10-27 00:31:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46204 states to 46204 states and 52520 transitions. [2020-10-27 00:31:39,734 INFO L78 Accepts]: Start accepts. Automaton has 46204 states and 52520 transitions. Word has length 1234 [2020-10-27 00:31:39,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:39,736 INFO L481 AbstractCegarLoop]: Abstraction has 46204 states and 52520 transitions. [2020-10-27 00:31:39,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:39,736 INFO L276 IsEmpty]: Start isEmpty. Operand 46204 states and 52520 transitions. [2020-10-27 00:31:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2020-10-27 00:31:39,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:39,759 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-10-27 00:31:39,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:31:39,760 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1426523149, now seen corresponding path program 1 times [2020-10-27 00:31:39,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:39,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957782069] [2020-10-27 00:31:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1274 [2020-10-27 00:31:44,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3998 [2020-10-27 00:31:44,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:31:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:31:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:44,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:44,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:31:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:44,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:31:44,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:44,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:44,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:45,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 00:31:45,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:31:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:31:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:31:45,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:31:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:31:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 00:31:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 674 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-27 00:31:46,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957782069] [2020-10-27 00:31:46,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:46,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:46,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666285442] [2020-10-27 00:31:46,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:46,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:46,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:46,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:46,211 INFO L87 Difference]: Start difference. First operand 46204 states and 52520 transitions. Second operand 7 states. [2020-10-27 00:31:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:58,993 INFO L93 Difference]: Finished difference Result 93247 states and 106098 transitions. [2020-10-27 00:31:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:58,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1248 [2020-10-27 00:31:58,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:59,160 INFO L225 Difference]: With dead ends: 93247 [2020-10-27 00:31:59,160 INFO L226 Difference]: Without dead ends: 47049 [2020-10-27 00:31:59,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47049 states. [2020-10-27 00:31:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47049 to 43463. [2020-10-27 00:31:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43463 states. [2020-10-27 00:32:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43463 states to 43463 states and 48839 transitions. [2020-10-27 00:32:00,007 INFO L78 Accepts]: Start accepts. Automaton has 43463 states and 48839 transitions. Word has length 1248 [2020-10-27 00:32:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:00,008 INFO L481 AbstractCegarLoop]: Abstraction has 43463 states and 48839 transitions. [2020-10-27 00:32:00,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 43463 states and 48839 transitions. [2020-10-27 00:32:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2020-10-27 00:32:00,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:00,033 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:32:00,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:32:00,034 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:00,035 INFO L82 PathProgramCache]: Analyzing trace with hash -649399756, now seen corresponding path program 1 times [2020-10-27 00:32:00,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:00,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667965720] [2020-10-27 00:32:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:00,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1338 [2020-10-27 00:32:05,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 00:32:05,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:32:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 00:32:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:32:05,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:05,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:32:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:32:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1061 [2020-10-27 00:32:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:06,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:32:06,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:32:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1158 [2020-10-27 00:32:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:32:06,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:32:06,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:32:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 631 proven. 148 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2020-10-27 00:32:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667965720] [2020-10-27 00:32:07,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:07,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:07,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230810100] [2020-10-27 00:32:07,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:07,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:07,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:07,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:07,484 INFO L87 Difference]: Start difference. First operand 43463 states and 48839 transitions. Second operand 7 states.