/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:33:36,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:33:36,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:33:36,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:33:36,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:33:36,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:33:36,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:33:36,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:33:36,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:33:36,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:33:36,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:33:36,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:33:36,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:33:36,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:33:36,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:33:36,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:33:36,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:33:36,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:33:36,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:33:36,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:33:36,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:33:36,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:33:36,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:33:36,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:33:36,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:33:36,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:33:36,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:33:36,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:33:36,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:33:36,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:33:36,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:33:36,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:33:36,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:33:36,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:33:36,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:33:36,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:33:36,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:33:36,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:33:36,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:33:36,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:33:36,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:33:36,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:33:36,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:33:36,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:33:36,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:33:36,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:33:36,461 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:33:36,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:33:36,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:33:36,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:33:36,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:33:36,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:33:36,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:33:36,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:33:36,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:33:36,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:33:36,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:33:36,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:33:36,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:33:36,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:33:36,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:33:36,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:33:36,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:33:36,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:33:36,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:33:36,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:33:36,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:33:36,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:33:36,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:33:36,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:33:36,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:33:36,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:33:36,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:33:36,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:33:36,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:33:36,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:33:36,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:33:36,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2020-10-27 04:33:37,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1f25382/8e8de8759f0942b99ff5cf57a9a0016e/FLAG1b43fe0fa [2020-10-27 04:33:37,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:33:37,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2020-10-27 04:33:37,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1f25382/8e8de8759f0942b99ff5cf57a9a0016e/FLAG1b43fe0fa [2020-10-27 04:33:37,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1f25382/8e8de8759f0942b99ff5cf57a9a0016e [2020-10-27 04:33:37,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:33:37,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:33:37,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:33:37,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:33:37,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:33:37,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:33:37" (1/1) ... [2020-10-27 04:33:37,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f64488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:37, skipping insertion in model container [2020-10-27 04:33:37,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:33:37" (1/1) ... [2020-10-27 04:33:37,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:33:38,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:33:38,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:33:38,276 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:33:38,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:33:38,397 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:33:38,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38 WrapperNode [2020-10-27 04:33:38,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:33:38,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:33:38,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:33:38,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:33:38,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... [2020-10-27 04:33:38,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... [2020-10-27 04:33:38,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... [2020-10-27 04:33:38,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... [2020-10-27 04:33:38,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... [2020-10-27 04:33:38,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... [2020-10-27 04:33:38,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... [2020-10-27 04:33:38,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:33:38,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:33:38,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:33:38,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:33:38,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:33:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:33:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:33:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:33:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:33:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:33:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:33:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:33:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:33:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:33:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:33:38,569 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:33:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:33:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:33:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:33:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:33:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:33:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:33:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:33:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:33:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:33:38,574 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:33:38,574 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:33:38,574 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:33:38,574 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:33:38,574 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:33:38,574 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:33:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:33:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:33:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:33:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:33:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:33:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:33:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:33:39,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:33:39,472 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:33:39,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:33:39 BoogieIcfgContainer [2020-10-27 04:33:39,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:33:39,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:33:39,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:33:39,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:33:39,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:33:37" (1/3) ... [2020-10-27 04:33:39,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9ed321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:33:39, skipping insertion in model container [2020-10-27 04:33:39,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:33:38" (2/3) ... [2020-10-27 04:33:39,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9ed321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:33:39, skipping insertion in model container [2020-10-27 04:33:39,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:33:39" (3/3) ... [2020-10-27 04:33:39,489 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2020-10-27 04:33:39,507 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:33:39,514 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:33:39,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:33:39,572 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:33:39,572 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:33:39,572 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:33:39,572 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:33:39,573 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:33:39,573 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:33:39,573 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:33:39,573 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:33:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-10-27 04:33:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 04:33:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:39,623 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] [2020-10-27 04:33:39,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -710978234, now seen corresponding path program 1 times [2020-10-27 04:33:39,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:39,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470925118] [2020-10-27 04:33:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:40,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:40,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:33:40,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-27 04:33:40,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:33:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:33:40,732 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:33:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:40,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:40,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:40,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:33:40,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:40,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:33:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:40,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:40,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:40,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:40,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:40,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:40,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:40,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:33:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:40,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:33:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:33:40,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:33:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:40,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:33:40,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:33:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:33:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:33:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:33:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:41,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:41,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:41,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:33:41,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:33:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:41,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:41,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:41,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:33:41,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:33:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:33:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:41,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470925118] [2020-10-27 04:33:41,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:41,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:33:41,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173993719] [2020-10-27 04:33:41,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:33:41,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:41,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:33:41,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:33:41,087 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 7 states. [2020-10-27 04:33:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:42,052 INFO L93 Difference]: Finished difference Result 232 states and 341 transitions. [2020-10-27 04:33:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:33:42,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-27 04:33:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:42,066 INFO L225 Difference]: With dead ends: 232 [2020-10-27 04:33:42,066 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 04:33:42,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:33:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 04:33:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-10-27 04:33:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:33:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 189 transitions. [2020-10-27 04:33:42,131 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 189 transitions. Word has length 57 [2020-10-27 04:33:42,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:42,131 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 189 transitions. [2020-10-27 04:33:42,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:33:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 189 transitions. [2020-10-27 04:33:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 04:33:42,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:42,135 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] [2020-10-27 04:33:42,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:33:42,135 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:42,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1534601220, now seen corresponding path program 1 times [2020-10-27 04:33:42,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:42,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519190683] [2020-10-27 04:33:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:42,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:42,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:33:42,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:42,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-27 04:33:42,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:42,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:42,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:33:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,006 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:33:43,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:43,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:43,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:43,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:33:43,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:43,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:33:43,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:33:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:33:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:43,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:43,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:33:43,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:43,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:33:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:43,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:33:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:33:43,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:33:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:43,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:33:43,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:33:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:33:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:33:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:33:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:43,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519190683] [2020-10-27 04:33:43,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:43,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:33:43,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957408476] [2020-10-27 04:33:43,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:33:43,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:33:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:33:43,318 INFO L87 Difference]: Start difference. First operand 126 states and 189 transitions. Second operand 11 states. [2020-10-27 04:33:43,624 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:33:43,849 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 04:33:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:33:45,717 INFO L93 Difference]: Finished difference Result 234 states and 342 transitions. [2020-10-27 04:33:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:33:45,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 04:33:45,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:33:45,722 INFO L225 Difference]: With dead ends: 234 [2020-10-27 04:33:45,722 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 04:33:45,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:33:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 04:33:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 126. [2020-10-27 04:33:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:33:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 165 transitions. [2020-10-27 04:33:45,749 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 165 transitions. Word has length 57 [2020-10-27 04:33:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:33:45,750 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 165 transitions. [2020-10-27 04:33:45,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:33:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 165 transitions. [2020-10-27 04:33:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 04:33:45,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:33:45,753 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] [2020-10-27 04:33:45,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:33:45,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:33:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:33:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash 200587290, now seen corresponding path program 1 times [2020-10-27 04:33:45,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:33:45,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586706893] [2020-10-27 04:33:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:33:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:45,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:33:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:33:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:33:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:33:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 04:33:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:33:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:33:51,103 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:33:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:33:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:33:51,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:33:51,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:33:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:33:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:33:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:33:51,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:33:51,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:33:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:33:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:33:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:33:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:51,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:33:51,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:33:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:33:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:51,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:33:51,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:33:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:33:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:51,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:33:51,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:33:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:33:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:33:51,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:33:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:33:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:33:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:33:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:33:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:33:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:33:51,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:33:51,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:33:51,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:33:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:33:51,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:33:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:33:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:33:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:33:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:33:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:33:51,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586706893] [2020-10-27 04:33:51,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:33:51,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 04:33:51,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167619299] [2020-10-27 04:33:51,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:33:51,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:33:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:33:51,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:33:51,646 INFO L87 Difference]: Start difference. First operand 126 states and 165 transitions. Second operand 16 states. [2020-10-27 04:33:51,910 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 04:33:52,129 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:33:52,367 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:33:52,639 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 04:33:53,371 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:33:54,410 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 04:33:54,908 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 04:33:55,590 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 149 [2020-10-27 04:33:56,121 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 04:33:56,662 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2020-10-27 04:33:57,183 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 04:33:58,337 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-27 04:33:59,582 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 04:33:59,744 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 04:33:59,905 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 04:34:01,025 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 04:34:01,187 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 04:34:01,350 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-27 04:34:02,243 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 04:34:02,601 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 04:34:02,789 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 04:34:02,956 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 04:34:03,847 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 04:34:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:04,932 INFO L93 Difference]: Finished difference Result 1005 states and 1445 transitions. [2020-10-27 04:34:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-27 04:34:04,933 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-27 04:34:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:04,945 INFO L225 Difference]: With dead ends: 1005 [2020-10-27 04:34:04,945 INFO L226 Difference]: Without dead ends: 917 [2020-10-27 04:34:04,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1136, Invalid=4414, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 04:34:04,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-10-27 04:34:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 652. [2020-10-27 04:34:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-10-27 04:34:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 945 transitions. [2020-10-27 04:34:05,087 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 945 transitions. Word has length 80 [2020-10-27 04:34:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:05,088 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 945 transitions. [2020-10-27 04:34:05,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:34:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 945 transitions. [2020-10-27 04:34:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 04:34:05,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:05,093 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] [2020-10-27 04:34:05,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:34:05,093 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1095531558, now seen corresponding path program 1 times [2020-10-27 04:34:05,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:05,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657503487] [2020-10-27 04:34:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:34:10,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:34:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:34:10,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:34:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:34:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:10,411 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:10,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:34:10,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:10,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:10,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:34:10,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:10,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:34:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:10,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:10,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:34:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:10,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:10,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:34:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:10,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:10,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:10,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:34:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:10,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:10,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:10,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:10,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:10,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657503487] [2020-10-27 04:34:10,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:10,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:10,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454736277] [2020-10-27 04:34:10,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:10,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:10,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:10,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:10,678 INFO L87 Difference]: Start difference. First operand 652 states and 945 transitions. Second operand 10 states. [2020-10-27 04:34:10,913 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:13,081 INFO L93 Difference]: Finished difference Result 1842 states and 2680 transitions. [2020-10-27 04:34:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:34:13,083 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 04:34:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:13,092 INFO L225 Difference]: With dead ends: 1842 [2020-10-27 04:34:13,092 INFO L226 Difference]: Without dead ends: 1228 [2020-10-27 04:34:13,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2020-10-27 04:34:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1176. [2020-10-27 04:34:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-10-27 04:34:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1701 transitions. [2020-10-27 04:34:13,220 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1701 transitions. Word has length 81 [2020-10-27 04:34:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:13,221 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1701 transitions. [2020-10-27 04:34:13,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:34:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1701 transitions. [2020-10-27 04:34:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:34:13,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:13,226 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] [2020-10-27 04:34:13,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:34:13,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1449794330, now seen corresponding path program 1 times [2020-10-27 04:34:13,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:13,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301180813] [2020-10-27 04:34:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:34:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:34:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:34:18,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:34:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 04:34:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,503 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:18,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:34:18,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:18,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:34:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:34:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:18,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:34:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:18,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:34:18,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:18,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:34:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:18,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:18,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:34:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:18,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:34:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:18,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:18,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:18,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301180813] [2020-10-27 04:34:18,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:18,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:18,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784512152] [2020-10-27 04:34:18,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:18,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:18,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:18,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:18,750 INFO L87 Difference]: Start difference. First operand 1176 states and 1701 transitions. Second operand 10 states. [2020-10-27 04:34:18,966 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:21,150 INFO L93 Difference]: Finished difference Result 3356 states and 4851 transitions. [2020-10-27 04:34:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:34:21,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-27 04:34:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:21,172 INFO L225 Difference]: With dead ends: 3356 [2020-10-27 04:34:21,172 INFO L226 Difference]: Without dead ends: 2218 [2020-10-27 04:34:21,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2020-10-27 04:34:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2131. [2020-10-27 04:34:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2131 states. [2020-10-27 04:34:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 3062 transitions. [2020-10-27 04:34:21,382 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 3062 transitions. Word has length 82 [2020-10-27 04:34:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:21,384 INFO L481 AbstractCegarLoop]: Abstraction has 2131 states and 3062 transitions. [2020-10-27 04:34:21,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:34:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 3062 transitions. [2020-10-27 04:34:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 04:34:21,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:21,386 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] [2020-10-27 04:34:21,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:34:21,386 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:21,387 INFO L82 PathProgramCache]: Analyzing trace with hash -745357002, now seen corresponding path program 1 times [2020-10-27 04:34:21,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:21,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983821570] [2020-10-27 04:34:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:34:25,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:34:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3908 [2020-10-27 04:34:25,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 04:34:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 04:34:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,535 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:25,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:25,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:25,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:25,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:25,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:25,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:25,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:25,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:25,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:34:25,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:34:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:25,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:34:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:25,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:34:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:25,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:25,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:34:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:25,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:34:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:25,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:25,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983821570] [2020-10-27 04:34:25,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:25,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:25,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332930057] [2020-10-27 04:34:25,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:25,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:25,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:25,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:25,790 INFO L87 Difference]: Start difference. First operand 2131 states and 3062 transitions. Second operand 10 states. [2020-10-27 04:34:26,034 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:28,311 INFO L93 Difference]: Finished difference Result 6109 states and 8738 transitions. [2020-10-27 04:34:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:34:28,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-27 04:34:28,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:28,338 INFO L225 Difference]: With dead ends: 6109 [2020-10-27 04:34:28,338 INFO L226 Difference]: Without dead ends: 4016 [2020-10-27 04:34:28,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2020-10-27 04:34:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3873. [2020-10-27 04:34:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3873 states. [2020-10-27 04:34:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 5496 transitions. [2020-10-27 04:34:28,741 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 5496 transitions. Word has length 83 [2020-10-27 04:34:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:28,741 INFO L481 AbstractCegarLoop]: Abstraction has 3873 states and 5496 transitions. [2020-10-27 04:34:28,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:34:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 5496 transitions. [2020-10-27 04:34:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 04:34:28,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:28,750 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] [2020-10-27 04:34:28,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:34:28,750 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:28,751 INFO L82 PathProgramCache]: Analyzing trace with hash 120510326, now seen corresponding path program 1 times [2020-10-27 04:34:28,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:28,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806454513] [2020-10-27 04:34:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:29,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:29,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:34:29,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:34:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-27 04:34:29,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:34:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 04:34:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,096 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:30,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:30,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:30,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:34:30,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:30,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:30,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:30,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:30,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:34:30,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:34:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:30,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:30,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:30,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:30,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:30,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:30,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:34:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:34:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:30,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:30,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:30,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:30,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:34:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:30,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:30,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:30,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:30,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:34:30,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:34:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:30,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:30,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:30,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:30,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:30,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:30,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806454513] [2020-10-27 04:34:30,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:30,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:30,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225627615] [2020-10-27 04:34:30,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:30,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:30,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:30,335 INFO L87 Difference]: Start difference. First operand 3873 states and 5496 transitions. Second operand 10 states. [2020-10-27 04:34:30,566 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:32,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:32,760 INFO L93 Difference]: Finished difference Result 11047 states and 15596 transitions. [2020-10-27 04:34:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:34:32,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-10-27 04:34:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:32,807 INFO L225 Difference]: With dead ends: 11047 [2020-10-27 04:34:32,807 INFO L226 Difference]: Without dead ends: 7212 [2020-10-27 04:34:32,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7212 states. [2020-10-27 04:34:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7212 to 6985. [2020-10-27 04:34:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6985 states. [2020-10-27 04:34:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9760 transitions. [2020-10-27 04:34:33,546 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9760 transitions. Word has length 84 [2020-10-27 04:34:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:33,547 INFO L481 AbstractCegarLoop]: Abstraction has 6985 states and 9760 transitions. [2020-10-27 04:34:33,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:34:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9760 transitions. [2020-10-27 04:34:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:34:33,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:33,548 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] [2020-10-27 04:34:33,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:34:33,549 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:33,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:33,550 INFO L82 PathProgramCache]: Analyzing trace with hash 570671784, now seen corresponding path program 1 times [2020-10-27 04:34:33,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:33,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929596142] [2020-10-27 04:34:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:34,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:34:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:34,693 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:34,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:34,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:34,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:34:34,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:34,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:34,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:34,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:34:34,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:34:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:34,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:34,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:34,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:34:34,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:34:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:34:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:34,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:34,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:34:34,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:34:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:34:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:34,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:34,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:34,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:34:34,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:34:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:34:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:34,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:34,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:34,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:34,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:34:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:35,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:34:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:35,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:35,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:35,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929596142] [2020-10-27 04:34:35,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:35,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:34:35,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045449125] [2020-10-27 04:34:35,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:34:35,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:34:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:34:35,061 INFO L87 Difference]: Start difference. First operand 6985 states and 9760 transitions. Second operand 15 states. [2020-10-27 04:34:35,348 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:34:35,658 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:34:36,192 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 04:34:36,790 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:34:37,086 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 04:34:37,323 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 04:34:38,207 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:34:38,510 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:34:38,770 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:34:39,020 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:34:39,311 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:34:39,826 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:34:40,094 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:34:41,538 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:34:41,813 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:34:42,070 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:34:42,329 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:34:42,603 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:34:42,870 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:34:43,007 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:34:43,303 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:34:43,563 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:34:43,822 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:34:44,076 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:34:44,310 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:34:44,554 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:34:45,384 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:34:45,637 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:35:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:03,416 INFO L93 Difference]: Finished difference Result 78412 states and 114404 transitions. [2020-10-27 04:35:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-27 04:35:03,417 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-27 04:35:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:03,819 INFO L225 Difference]: With dead ends: 78412 [2020-10-27 04:35:03,820 INFO L226 Difference]: Without dead ends: 71465 [2020-10-27 04:35:03,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7338 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=2317, Invalid=16589, Unknown=0, NotChecked=0, Total=18906 [2020-10-27 04:35:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71465 states. [2020-10-27 04:35:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71465 to 70321. [2020-10-27 04:35:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70321 states. [2020-10-27 04:35:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70321 states to 70321 states and 94040 transitions. [2020-10-27 04:35:10,878 INFO L78 Accepts]: Start accepts. Automaton has 70321 states and 94040 transitions. Word has length 85 [2020-10-27 04:35:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:10,878 INFO L481 AbstractCegarLoop]: Abstraction has 70321 states and 94040 transitions. [2020-10-27 04:35:10,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:35:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 70321 states and 94040 transitions. [2020-10-27 04:35:10,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 04:35:10,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:10,881 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] [2020-10-27 04:35:10,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:35:10,881 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash 639359489, now seen corresponding path program 1 times [2020-10-27 04:35:11,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:11,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103852386] [2020-10-27 04:35:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:11,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:11,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:35:11,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:11,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-27 04:35:11,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:35:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 04:35:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:35:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:11,849 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:11,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:11,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:11,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:35:11,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:11,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:11,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:11,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:11,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:11,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:11,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:35:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:11,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:11,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:11,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:11,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:35:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:11,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:11,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:11,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:35:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:35:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:12,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:12,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:12,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:35:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:35:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:35:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:12,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103852386] [2020-10-27 04:35:12,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:12,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:35:12,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869638835] [2020-10-27 04:35:12,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:35:12,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:12,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:35:12,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:35:12,130 INFO L87 Difference]: Start difference. First operand 70321 states and 94040 transitions. Second operand 13 states. [2020-10-27 04:35:13,595 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:35:13,846 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 04:35:14,132 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:35:14,380 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:35:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:20,576 INFO L93 Difference]: Finished difference Result 93442 states and 130952 transitions. [2020-10-27 04:35:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:35:20,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-27 04:35:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:21,145 INFO L225 Difference]: With dead ends: 93442 [2020-10-27 04:35:21,145 INFO L226 Difference]: Without dead ends: 93439 [2020-10-27 04:35:21,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:35:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93439 states. [2020-10-27 04:35:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93439 to 80689. [2020-10-27 04:35:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80689 states. [2020-10-27 04:35:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80689 states to 80689 states and 104408 transitions. [2020-10-27 04:35:28,692 INFO L78 Accepts]: Start accepts. Automaton has 80689 states and 104408 transitions. Word has length 86 [2020-10-27 04:35:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:28,692 INFO L481 AbstractCegarLoop]: Abstraction has 80689 states and 104408 transitions. [2020-10-27 04:35:28,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:35:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 80689 states and 104408 transitions. [2020-10-27 04:35:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 04:35:28,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:28,881 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] [2020-10-27 04:35:28,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:35:28,881 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:28,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1356410875, now seen corresponding path program 1 times [2020-10-27 04:35:28,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:28,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230096513] [2020-10-27 04:35:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:35:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 04:35:29,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:35:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:35:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,271 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:29,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:29,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:29,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:35:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:35:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:35:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:35:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:29,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:29,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:29,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:35:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:29,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:29,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:29,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:35:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:29,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:29,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:35:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:35:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:29,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:35:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:29,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230096513] [2020-10-27 04:35:29,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:29,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:35:29,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127757910] [2020-10-27 04:35:29,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:35:29,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:35:29,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:35:29,476 INFO L87 Difference]: Start difference. First operand 80689 states and 104408 transitions. Second operand 10 states. [2020-10-27 04:35:29,703 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 04:35:31,757 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 04:35:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:42,460 INFO L93 Difference]: Finished difference Result 239980 states and 312652 transitions. [2020-10-27 04:35:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:35:42,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 04:35:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:43,223 INFO L225 Difference]: With dead ends: 239980 [2020-10-27 04:35:43,223 INFO L226 Difference]: Without dead ends: 159457 [2020-10-27 04:35:43,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:35:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159457 states. [2020-10-27 04:35:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159457 to 157081. [2020-10-27 04:35:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157081 states. [2020-10-27 04:35:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157081 states to 157081 states and 203684 transitions. [2020-10-27 04:35:55,646 INFO L78 Accepts]: Start accepts. Automaton has 157081 states and 203684 transitions. Word has length 87 [2020-10-27 04:35:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:55,647 INFO L481 AbstractCegarLoop]: Abstraction has 157081 states and 203684 transitions. [2020-10-27 04:35:55,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:35:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 157081 states and 203684 transitions. [2020-10-27 04:35:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 04:35:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:55,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:55,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:35:55,698 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:55,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1502636274, now seen corresponding path program 1 times [2020-10-27 04:35:55,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:55,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701243112] [2020-10-27 04:35:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2962 [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:35:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,952 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:58,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:58,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:58,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:58,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:35:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:35:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:35:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:59,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:35:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:35:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:59,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:35:59,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:35:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:59,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:35:59,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:35:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:35:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:35:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:59,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:35:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:59,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:59,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 04:35:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:59,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:35:59,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:35:59,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:59,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:35:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:59,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:59,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:59,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:35:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:59,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:59,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:35:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 04:35:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:59,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:59,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:35:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 04:35:59,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701243112] [2020-10-27 04:35:59,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:35:59,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:35:59,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85897447] [2020-10-27 04:35:59,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:35:59,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:35:59,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:35:59,479 INFO L87 Difference]: Start difference. First operand 157081 states and 203684 transitions. Second operand 16 states. [2020-10-27 04:35:59,794 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:36:00,307 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:36:01,511 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2020-10-27 04:36:01,699 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-27 04:36:02,195 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 04:36:04,639 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 151 [2020-10-27 04:36:04,875 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-27 04:36:11,712 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:36:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:29,818 INFO L93 Difference]: Finished difference Result 480356 states and 622131 transitions. [2020-10-27 04:36:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 04:36:29,819 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 131 [2020-10-27 04:36:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:32,548 INFO L225 Difference]: With dead ends: 480356 [2020-10-27 04:36:32,548 INFO L226 Difference]: Without dead ends: 392401 [2020-10-27 04:36:32,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=426, Invalid=1736, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 04:36:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392401 states. [2020-10-27 04:37:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392401 to 379017. [2020-10-27 04:37:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379017 states.