/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem06_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:44:31,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:44:31,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:44:31,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:44:31,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:44:31,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:44:31,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:44:31,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:44:31,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:44:31,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:44:31,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:44:31,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:44:31,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:44:31,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:44:31,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:44:31,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:44:31,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:44:31,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:44:31,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:44:31,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:44:31,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:44:31,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:44:31,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:44:31,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:44:31,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:44:31,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:44:31,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:44:31,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:44:31,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:44:31,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:44:31,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:44:31,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:44:31,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:44:31,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:44:31,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:44:31,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:44:31,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:44:31,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:44:31,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:44:31,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:44:31,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:44:31,499 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 [2020-10-29 05:44:31,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:44:31,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:44:31,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:44:31,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:44:31,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:44:31,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:44:31,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:44:31,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:44:31,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:44:31,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:44:31,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:44:31,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:44:31,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:44:31,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:44:31,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:44:31,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:44:31,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:44:31,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:44:31,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:44:31,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:44:31,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:44:31,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:44:31,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:44:31,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:44:31,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:44:31,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:44:31,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:44:31,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:44:31,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:44:31,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:44:31,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:44:31,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:44:31,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:44:31,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:44:31,999 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:44:32,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-29 05:44:32,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5456f6442/eeb63f09e51548d8a83a5fa170820b65/FLAGe55876d31 [2020-10-29 05:44:33,400 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:44:33,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-29 05:44:33,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5456f6442/eeb63f09e51548d8a83a5fa170820b65/FLAGe55876d31 [2020-10-29 05:44:33,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5456f6442/eeb63f09e51548d8a83a5fa170820b65 [2020-10-29 05:44:33,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:44:33,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:44:33,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:44:33,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:44:33,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:44:33,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:33" (1/1) ... [2020-10-29 05:44:33,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139b64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:33, skipping insertion in model container [2020-10-29 05:44:33,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:33" (1/1) ... [2020-10-29 05:44:33,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:44:33,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:44:36,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:44:36,128 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:44:37,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:44:37,397 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:44:37,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37 WrapperNode [2020-10-29 05:44:37,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:44:37,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:44:37,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:44:37,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:44:37,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (1/1) ... [2020-10-29 05:44:37,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (1/1) ... [2020-10-29 05:44:37,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (1/1) ... [2020-10-29 05:44:37,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (1/1) ... [2020-10-29 05:44:37,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (1/1) ... [2020-10-29 05:44:37,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (1/1) ... [2020-10-29 05:44:37,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (1/1) ... [2020-10-29 05:44:37,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:44:37,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:44:37,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:44:37,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:44:37,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (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 [2020-10-29 05:44:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:44:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:44:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:44:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:44:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:44:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:44:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:44:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:44:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:44:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:44:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:44:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:44:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:44:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:44:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:44:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:44:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:44:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:44:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:44:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:44:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:44:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:44:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:44:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:44:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:44:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:44:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:44:46,544 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:44:46,545 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:44:46,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:46 BoogieIcfgContainer [2020-10-29 05:44:46,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:44:46,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:44:46,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:44:46,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:44:46,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:44:33" (1/3) ... [2020-10-29 05:44:46,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d007b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:46, skipping insertion in model container [2020-10-29 05:44:46,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:37" (2/3) ... [2020-10-29 05:44:46,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d007b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:46, skipping insertion in model container [2020-10-29 05:44:46,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:46" (3/3) ... [2020-10-29 05:44:46,560 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label38.c [2020-10-29 05:44:46,573 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:44:46,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:44:46,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:44:46,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:44:46,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:44:46,632 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:44:46,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:44:46,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:44:46,633 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:44:46,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:44:46,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:44:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:44:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-29 05:44:46,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:44:46,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:44:46,823 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:44:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:44:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash 194812492, now seen corresponding path program 1 times [2020-10-29 05:44:46,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:44:46,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656788638] [2020-10-29 05:44:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:44:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:53,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-29 05:44:53,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:44:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5186 [2020-10-29 05:44:53,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:53,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:44:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:44:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 962 [2020-10-29 05:44:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:44:54,722 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:44:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:44:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:54,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:44:54,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:44:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:54,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:44:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:44:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:44:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:44:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:44:56,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656788638] [2020-10-29 05:44:56,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:44:56,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:44:56,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459218690] [2020-10-29 05:44:56,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:44:56,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:44:56,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:44:56,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:44:56,355 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:44:56,649 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:45:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:45:14,414 INFO L93 Difference]: Finished difference Result 3770 states and 7012 transitions. [2020-10-29 05:45:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:45:14,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 953 [2020-10-29 05:45:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:45:14,468 INFO L225 Difference]: With dead ends: 3770 [2020-10-29 05:45:14,469 INFO L226 Difference]: Without dead ends: 2387 [2020-10-29 05:45:14,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:45:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-29 05:45:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-29 05:45:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-29 05:45:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3972 transitions. [2020-10-29 05:45:14,701 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3972 transitions. Word has length 953 [2020-10-29 05:45:14,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:45:14,705 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3972 transitions. [2020-10-29 05:45:14,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:45:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3972 transitions. [2020-10-29 05:45:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-29 05:45:14,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:14,780 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:14,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:45:14,781 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash 327711411, now seen corresponding path program 1 times [2020-10-29 05:45:14,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:14,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885027266] [2020-10-29 05:45:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:15,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:17,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:20,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:20,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 985 [2020-10-29 05:45:20,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:45:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 05:45:20,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:20,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:45:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:45:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 959 [2020-10-29 05:45:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:21,059 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:21,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:21,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:45:21,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:21,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:45:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:45:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:45:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:45:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:45:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:21,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:45:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:45:22,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885027266] [2020-10-29 05:45:22,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:45:22,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:45:22,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647455585] [2020-10-29 05:45:22,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:45:22,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:22,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:45:22,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:45:22,386 INFO L87 Difference]: Start difference. First operand 2374 states and 3972 transitions. Second operand 5 states. [2020-10-29 05:45:22,758 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:45:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:45:43,274 INFO L93 Difference]: Finished difference Result 6891 states and 11687 transitions. [2020-10-29 05:45:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:45:43,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 965 [2020-10-29 05:45:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:45:43,315 INFO L225 Difference]: With dead ends: 6891 [2020-10-29 05:45:43,315 INFO L226 Difference]: Without dead ends: 4523 [2020-10-29 05:45:43,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:45:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2020-10-29 05:45:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4459. [2020-10-29 05:45:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4459 states. [2020-10-29 05:45:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6814 transitions. [2020-10-29 05:45:43,572 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6814 transitions. Word has length 965 [2020-10-29 05:45:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:45:43,574 INFO L481 AbstractCegarLoop]: Abstraction has 4459 states and 6814 transitions. [2020-10-29 05:45:43,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:45:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6814 transitions. [2020-10-29 05:45:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-29 05:45:43,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:43,619 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:43,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:45:43,620 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1493997634, now seen corresponding path program 1 times [2020-10-29 05:45:43,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:43,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242157808] [2020-10-29 05:45:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:48,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-29 05:45:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:45:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-29 05:45:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:48,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:45:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:45:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 959 [2020-10-29 05:45:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:49,825 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:49,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:49,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:49,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:45:49,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:49,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:45:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:45:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:45:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:50,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:50,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:45:50,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:45:50,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:50,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:45:50,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:45:51,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242157808] [2020-10-29 05:45:51,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:45:51,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:45:51,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300879064] [2020-10-29 05:45:51,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:45:51,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:51,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:45:51,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:45:51,142 INFO L87 Difference]: Start difference. First operand 4459 states and 6814 transitions. Second operand 6 states. [2020-10-29 05:45:51,427 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:46:11,317 INFO L93 Difference]: Finished difference Result 11039 states and 17394 transitions. [2020-10-29 05:46:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:46:11,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 968 [2020-10-29 05:46:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:46:11,358 INFO L225 Difference]: With dead ends: 11039 [2020-10-29 05:46:11,358 INFO L226 Difference]: Without dead ends: 6586 [2020-10-29 05:46:11,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:46:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2020-10-29 05:46:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 6532. [2020-10-29 05:46:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2020-10-29 05:46:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 10379 transitions. [2020-10-29 05:46:11,570 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 10379 transitions. Word has length 968 [2020-10-29 05:46:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:46:11,572 INFO L481 AbstractCegarLoop]: Abstraction has 6532 states and 10379 transitions. [2020-10-29 05:46:11,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:46:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 10379 transitions. [2020-10-29 05:46:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2020-10-29 05:46:11,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:46:11,600 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:46:11,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:46:11,600 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:46:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:46:11,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1670568571, now seen corresponding path program 1 times [2020-10-29 05:46:11,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:46:11,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611967233] [2020-10-29 05:46:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:46:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:13,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-29 05:46:16,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:46:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 05:46:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:16,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:46:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:46:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 960 [2020-10-29 05:46:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:17,571 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:46:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:46:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:46:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:46:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:17,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:46:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:46:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:46:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:17,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:17,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:46:17,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:46:17,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:17,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:46:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:46:17,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:46:18,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611967233] [2020-10-29 05:46:18,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:18,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:46:18,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615445566] [2020-10-29 05:46:18,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:46:18,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:18,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:46:18,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:46:18,722 INFO L87 Difference]: Start difference. First operand 6532 states and 10379 transitions. Second operand 5 states. [2020-10-29 05:46:19,078 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:46:40,826 INFO L93 Difference]: Finished difference Result 19391 states and 31386 transitions. [2020-10-29 05:46:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:46:40,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 969 [2020-10-29 05:46:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:46:40,920 INFO L225 Difference]: With dead ends: 19391 [2020-10-29 05:46:40,920 INFO L226 Difference]: Without dead ends: 12865 [2020-10-29 05:46:40,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:46:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12865 states. [2020-10-29 05:46:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12865 to 12830. [2020-10-29 05:46:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12830 states. [2020-10-29 05:46:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12830 states to 12830 states and 19477 transitions. [2020-10-29 05:46:41,327 INFO L78 Accepts]: Start accepts. Automaton has 12830 states and 19477 transitions. Word has length 969 [2020-10-29 05:46:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:46:41,329 INFO L481 AbstractCegarLoop]: Abstraction has 12830 states and 19477 transitions. [2020-10-29 05:46:41,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:46:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12830 states and 19477 transitions. [2020-10-29 05:46:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-29 05:46:41,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:46:41,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:46:41,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:46:41,379 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:46:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:46:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash 830261355, now seen corresponding path program 1 times [2020-10-29 05:46:41,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:46:41,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648073495] [2020-10-29 05:46:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:46:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:46,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-29 05:46:46,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:46:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 05:46:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:46,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:46:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:46:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:46:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:46,973 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:46:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:46:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:47,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:47,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:46:47,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:46:47,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:47,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:46:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:46:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:46:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:47,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:47,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:46:47,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:47,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:46:47,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:47,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:46:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:46:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:46:47,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:47,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:46:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:47,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:46:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:46:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:47,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:46:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:46:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:46:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:46:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648073495] [2020-10-29 05:46:47,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:47,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:46:47,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069901350] [2020-10-29 05:46:47,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:46:47,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:47,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:46:47,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:46:47,848 INFO L87 Difference]: Start difference. First operand 12830 states and 19477 transitions. Second operand 7 states. [2020-10-29 05:46:48,197 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:46:49,327 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:47:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:47:08,911 INFO L93 Difference]: Finished difference Result 38676 states and 61869 transitions. [2020-10-29 05:47:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:47:08,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2020-10-29 05:47:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:47:09,022 INFO L225 Difference]: With dead ends: 38676 [2020-10-29 05:47:09,023 INFO L226 Difference]: Without dead ends: 25852 [2020-10-29 05:47:09,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:47:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25852 states. [2020-10-29 05:47:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25852 to 25701. [2020-10-29 05:47:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25701 states. [2020-10-29 05:47:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25701 states to 25701 states and 38037 transitions. [2020-10-29 05:47:09,847 INFO L78 Accepts]: Start accepts. Automaton has 25701 states and 38037 transitions. Word has length 974 [2020-10-29 05:47:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:47:09,847 INFO L481 AbstractCegarLoop]: Abstraction has 25701 states and 38037 transitions. [2020-10-29 05:47:09,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:47:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 25701 states and 38037 transitions. [2020-10-29 05:47:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-29 05:47:09,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:09,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:09,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:47:09,955 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:09,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1928464223, now seen corresponding path program 1 times [2020-10-29 05:47:09,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:09,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784820992] [2020-10-29 05:47:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:10,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:15,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:15,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-29 05:47:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:47:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-29 05:47:15,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:15,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:47:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:47:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 05:47:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:15,709 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:15,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:15,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:15,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:15,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:15,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:47:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:15,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:47:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:47:15,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:15,842 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:47:15,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:47:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:15,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:15,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:15,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:47:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:47:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:15,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:47:15,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:47:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:15,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:47:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:15,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:47:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:15,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:47:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:47:15,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:15,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:47:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 05:47:16,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784820992] [2020-10-29 05:47:16,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:47:16,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:47:16,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458148862] [2020-10-29 05:47:16,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:47:16,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:16,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:47:16,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:47:16,739 INFO L87 Difference]: Start difference. First operand 25701 states and 38037 transitions. Second operand 7 states. [2020-10-29 05:47:17,112 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:18,677 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:47:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:47:41,254 INFO L93 Difference]: Finished difference Result 78113 states and 127627 transitions. [2020-10-29 05:47:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:47:41,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 985 [2020-10-29 05:47:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:47:41,540 INFO L225 Difference]: With dead ends: 78113 [2020-10-29 05:47:41,541 INFO L226 Difference]: Without dead ends: 52418 [2020-10-29 05:47:41,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:47:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52418 states. [2020-10-29 05:47:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52418 to 51882. [2020-10-29 05:47:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51882 states. [2020-10-29 05:47:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51882 states to 51882 states and 77560 transitions. [2020-10-29 05:47:43,356 INFO L78 Accepts]: Start accepts. Automaton has 51882 states and 77560 transitions. Word has length 985 [2020-10-29 05:47:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:47:43,356 INFO L481 AbstractCegarLoop]: Abstraction has 51882 states and 77560 transitions. [2020-10-29 05:47:43,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:47:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 51882 states and 77560 transitions. [2020-10-29 05:47:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-10-29 05:47:43,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:43,536 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:43,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:47:43,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:43,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:43,537 INFO L82 PathProgramCache]: Analyzing trace with hash 934655531, now seen corresponding path program 1 times [2020-10-29 05:47:43,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:43,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448130040] [2020-10-29 05:47:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:48,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-29 05:47:48,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:47:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 05:47:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:48,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:47:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:47:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 05:47:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:49,118 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:49,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:49,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:47:49,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:49,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:47:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:47:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:49,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:49,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:47:49,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:47:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 05:47:49,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:49,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:47:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 05:47:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:49,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:47:49,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:47:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:47:49,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:49,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:47:49,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 05:47:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:49,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:49,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:47:49,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 05:47:49,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:49,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:47:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:47:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 33 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 05:47:50,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448130040] [2020-10-29 05:47:50,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:47:50,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 05:47:50,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400620464] [2020-10-29 05:47:50,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 05:47:50,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 05:47:50,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:47:50,134 INFO L87 Difference]: Start difference. First operand 51882 states and 77560 transitions. Second operand 10 states. [2020-10-29 05:47:50,412 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:51,474 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:52,613 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159