/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/systemc/toy2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:40:48,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:40:48,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:40:48,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:40:48,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:40:48,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:40:48,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:40:48,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:40:48,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:40:48,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:40:48,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:40:48,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:40:48,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:40:48,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:40:48,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:40:48,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:40:48,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:40:48,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:40:48,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:40:48,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:40:48,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:40:48,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:40:48,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:40:48,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:40:48,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:40:48,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:40:48,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:40:48,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:40:48,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:40:48,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:40:48,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:40:48,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:40:48,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:40:48,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:40:48,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:40:48,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:40:48,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:40:48,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:40:48,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:40:48,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:40:48,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:40:48,429 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 06:40:48,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:40:48,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:40:48,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:40:48,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:40:48,486 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:40:48,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:40:48,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:40:48,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:40:48,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:40:48,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:40:48,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:40:48,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:40:48,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:40:48,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:40:48,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:40:48,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:40:48,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:40:48,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:40:48,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:40:48,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:40:48,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:40:48,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:40:48,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:40:48,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:40:48,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:40:48,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:40:48,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:40:48,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:40:48,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:40:48,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:40:48,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:40:48,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:40:48,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:40:48,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:40:48,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:40:48,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-27 06:40:48,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e09a13df3/cd207dec571c432db98fc052ac2c9262/FLAGc2a97f78d [2020-10-27 06:40:49,570 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:40:49,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-27 06:40:49,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e09a13df3/cd207dec571c432db98fc052ac2c9262/FLAGc2a97f78d [2020-10-27 06:40:49,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e09a13df3/cd207dec571c432db98fc052ac2c9262 [2020-10-27 06:40:49,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:40:49,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:40:49,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:40:49,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:40:49,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:40:49,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:40:49" (1/1) ... [2020-10-27 06:40:49,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301ec25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:49, skipping insertion in model container [2020-10-27 06:40:49,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:40:49" (1/1) ... [2020-10-27 06:40:49,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:40:49,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:40:50,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:40:50,282 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:40:50,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:40:50,436 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:40:50,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50 WrapperNode [2020-10-27 06:40:50,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:40:50,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:40:50,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:40:50,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:40:50,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:40:50,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:40:50,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:40:50,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:40:50,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (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 06:40:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:40:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:40:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:40:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-27 06:40:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-27 06:40:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-27 06:40:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-27 06:40:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-27 06:40:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-27 06:40:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-27 06:40:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-27 06:40:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:40:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:40:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:40:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:40:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:40:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 06:40:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-27 06:40:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-27 06:40:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-27 06:40:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-27 06:40:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-27 06:40:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:40:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-27 06:40:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-27 06:40:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:40:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:40:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:40:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:40:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:40:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:40:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:40:51,776 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:40:51,777 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-27 06:40:51,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:40:51 BoogieIcfgContainer [2020-10-27 06:40:51,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:40:51,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:40:51,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:40:51,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:40:51,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:40:49" (1/3) ... [2020-10-27 06:40:51,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f85dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:40:51, skipping insertion in model container [2020-10-27 06:40:51,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (2/3) ... [2020-10-27 06:40:51,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f85dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:40:51, skipping insertion in model container [2020-10-27 06:40:51,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:40:51" (3/3) ... [2020-10-27 06:40:51,789 INFO L111 eAbstractionObserver]: Analyzing ICFG toy2.cil.c [2020-10-27 06:40:51,799 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:40:51,804 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:40:51,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:40:51,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:40:51,844 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:40:51,844 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:40:51,845 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:40:51,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:40:51,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:40:51,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:40:51,845 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:40:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-27 06:40:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 06:40:51,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:40:51,879 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] [2020-10-27 06:40:51,880 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:40:51,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:40:51,899 INFO L82 PathProgramCache]: Analyzing trace with hash 184578931, now seen corresponding path program 1 times [2020-10-27 06:40:51,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:40:51,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036561504] [2020-10-27 06:40:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:40:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:40:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:53,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:54,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:56,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:40:56,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 06:40:56,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:40:56,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3948 [2020-10-27 06:40:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:40:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:40:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:40:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 06:40:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:40:56,478 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:40:56,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:40:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:40:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:40:56,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:40:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:40:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:40:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:40:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:40:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:40:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:40:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:40:56,533 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 06:40:56,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036561504] [2020-10-27 06:40:56,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:40:56,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:40:56,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21853983] [2020-10-27 06:40:56,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:40:56,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:40:56,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:40:56,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:40:56,561 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-10-27 06:40:56,892 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:40:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:40:58,490 INFO L93 Difference]: Finished difference Result 446 states and 772 transitions. [2020-10-27 06:40:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:40:58,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-27 06:40:58,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:40:58,510 INFO L225 Difference]: With dead ends: 446 [2020-10-27 06:40:58,510 INFO L226 Difference]: Without dead ends: 292 [2020-10-27 06:40:58,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:40:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-27 06:40:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 259. [2020-10-27 06:40:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-27 06:40:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 416 transitions. [2020-10-27 06:40:58,613 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 416 transitions. Word has length 47 [2020-10-27 06:40:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:40:58,614 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 416 transitions. [2020-10-27 06:40:58,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:40:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 416 transitions. [2020-10-27 06:40:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 06:40:58,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:40:58,620 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:40:58,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:40:58,620 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:40:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:40:58,621 INFO L82 PathProgramCache]: Analyzing trace with hash -987487058, now seen corresponding path program 1 times [2020-10-27 06:40:58,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:40:58,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576841940] [2020-10-27 06:40:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:40:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:40:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:58,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:03,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:03,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 06:41:03,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:41:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 06:41:03,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 06:41:03,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:41:04,034 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:04,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:04,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:04,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:04,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:41:04,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:04,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:41:04,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:04,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576841940] [2020-10-27 06:41:04,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:04,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:04,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721097545] [2020-10-27 06:41:04,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:04,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:04,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:04,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:04,124 INFO L87 Difference]: Start difference. First operand 259 states and 416 transitions. Second operand 5 states. [2020-10-27 06:41:04,399 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:06,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:06,401 INFO L93 Difference]: Finished difference Result 902 states and 1465 transitions. [2020-10-27 06:41:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:41:06,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-27 06:41:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:06,417 INFO L225 Difference]: With dead ends: 902 [2020-10-27 06:41:06,417 INFO L226 Difference]: Without dead ends: 663 [2020-10-27 06:41:06,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-27 06:41:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 522. [2020-10-27 06:41:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-27 06:41:06,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 834 transitions. [2020-10-27 06:41:06,552 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 834 transitions. Word has length 61 [2020-10-27 06:41:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:06,552 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 834 transitions. [2020-10-27 06:41:06,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 834 transitions. [2020-10-27 06:41:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 06:41:06,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:06,561 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:06,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:41:06,561 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:06,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1845237360, now seen corresponding path program 1 times [2020-10-27 06:41:06,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:06,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163404927] [2020-10-27 06:41:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:11,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:11,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 06:41:11,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:41:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:41:11,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:41:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:41:11,928 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:11,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:41:11,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:11,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:41:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:12,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:12,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:12,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:41:12,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:41:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:12,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163404927] [2020-10-27 06:41:12,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:12,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:12,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868534690] [2020-10-27 06:41:12,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:12,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:12,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:12,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:12,026 INFO L87 Difference]: Start difference. First operand 522 states and 834 transitions. Second operand 5 states. [2020-10-27 06:41:12,299 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:13,099 INFO L93 Difference]: Finished difference Result 1165 states and 1880 transitions. [2020-10-27 06:41:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:13,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-27 06:41:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:13,106 INFO L225 Difference]: With dead ends: 1165 [2020-10-27 06:41:13,107 INFO L226 Difference]: Without dead ends: 659 [2020-10-27 06:41:13,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-27 06:41:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 522. [2020-10-27 06:41:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-27 06:41:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 832 transitions. [2020-10-27 06:41:13,174 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 832 transitions. Word has length 61 [2020-10-27 06:41:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:13,174 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 832 transitions. [2020-10-27 06:41:13,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 832 transitions. [2020-10-27 06:41:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 06:41:13,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:13,178 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:13,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:41:13,179 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:13,180 INFO L82 PathProgramCache]: Analyzing trace with hash -421143826, now seen corresponding path program 1 times [2020-10-27 06:41:13,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:13,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497952592] [2020-10-27 06:41:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:13,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:18,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:18,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 06:41:18,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:41:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 06:41:18,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 06:41:18,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:18,473 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:18,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:41:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:18,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:18,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:41:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:18,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497952592] [2020-10-27 06:41:18,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:18,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:18,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214428527] [2020-10-27 06:41:18,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:18,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:18,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:18,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:18,580 INFO L87 Difference]: Start difference. First operand 522 states and 832 transitions. Second operand 5 states. [2020-10-27 06:41:18,852 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:20,162 INFO L93 Difference]: Finished difference Result 1153 states and 1854 transitions. [2020-10-27 06:41:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:41:20,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-27 06:41:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:20,167 INFO L225 Difference]: With dead ends: 1153 [2020-10-27 06:41:20,168 INFO L226 Difference]: Without dead ends: 659 [2020-10-27 06:41:20,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-27 06:41:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 522. [2020-10-27 06:41:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-27 06:41:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 818 transitions. [2020-10-27 06:41:20,219 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 818 transitions. Word has length 61 [2020-10-27 06:41:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:20,220 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 818 transitions. [2020-10-27 06:41:20,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:20,220 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 818 transitions. [2020-10-27 06:41:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 06:41:20,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:20,222 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:20,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:41:20,223 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:20,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:20,223 INFO L82 PathProgramCache]: Analyzing trace with hash 77975726, now seen corresponding path program 1 times [2020-10-27 06:41:20,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:20,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716825774] [2020-10-27 06:41:20,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:20,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:20,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:25,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:25,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 06:41:25,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:41:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:41:25,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:25,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:25,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:25,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 06:41:25,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:25,529 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:25,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:25,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:25,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:25,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:41:25,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:25,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:25,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:25,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:41:25,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:25,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716825774] [2020-10-27 06:41:25,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:25,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:25,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752792081] [2020-10-27 06:41:25,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:25,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:25,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:25,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:25,611 INFO L87 Difference]: Start difference. First operand 522 states and 818 transitions. Second operand 5 states. [2020-10-27 06:41:25,911 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:27,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:27,242 INFO L93 Difference]: Finished difference Result 1157 states and 1834 transitions. [2020-10-27 06:41:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:27,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-27 06:41:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:27,247 INFO L225 Difference]: With dead ends: 1157 [2020-10-27 06:41:27,247 INFO L226 Difference]: Without dead ends: 659 [2020-10-27 06:41:27,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-27 06:41:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 522. [2020-10-27 06:41:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-27 06:41:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 794 transitions. [2020-10-27 06:41:27,300 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 794 transitions. Word has length 61 [2020-10-27 06:41:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:27,300 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 794 transitions. [2020-10-27 06:41:27,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 794 transitions. [2020-10-27 06:41:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 06:41:27,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:27,303 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:27,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:41:27,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:27,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1119118158, now seen corresponding path program 1 times [2020-10-27 06:41:27,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:27,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209611246] [2020-10-27 06:41:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:27,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:29,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:32,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:32,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 06:41:32,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:41:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 06:41:32,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 06:41:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:32,661 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:32,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:32,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:32,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:32,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:32,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:41:32,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:32,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:32,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:32,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:32,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:32,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:32,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:32,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:32,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:41:32,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:32,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:32,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:32,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:41:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:32,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209611246] [2020-10-27 06:41:32,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:32,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:32,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203812623] [2020-10-27 06:41:32,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:32,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:32,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:32,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:32,769 INFO L87 Difference]: Start difference. First operand 522 states and 794 transitions. Second operand 5 states. [2020-10-27 06:41:33,043 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:34,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:34,319 INFO L93 Difference]: Finished difference Result 1155 states and 1784 transitions. [2020-10-27 06:41:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:34,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-27 06:41:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:34,327 INFO L225 Difference]: With dead ends: 1155 [2020-10-27 06:41:34,328 INFO L226 Difference]: Without dead ends: 659 [2020-10-27 06:41:34,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-27 06:41:34,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 522. [2020-10-27 06:41:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-27 06:41:34,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 776 transitions. [2020-10-27 06:41:34,385 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 776 transitions. Word has length 61 [2020-10-27 06:41:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:34,385 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 776 transitions. [2020-10-27 06:41:34,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 776 transitions. [2020-10-27 06:41:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 06:41:34,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:34,387 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:34,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:41:34,388 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1434828754, now seen corresponding path program 1 times [2020-10-27 06:41:34,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:34,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331685985] [2020-10-27 06:41:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:39,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:39,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 06:41:39,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:41:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 06:41:39,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 06:41:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:39,763 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:39,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:39,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:39,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:39,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:41:39,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:39,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:39,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:39,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:41:39,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:39,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:41:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:39,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331685985] [2020-10-27 06:41:39,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:39,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:39,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996101192] [2020-10-27 06:41:39,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:39,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:39,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:39,876 INFO L87 Difference]: Start difference. First operand 522 states and 776 transitions. Second operand 5 states. [2020-10-27 06:41:40,212 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:41,402 INFO L93 Difference]: Finished difference Result 1159 states and 1754 transitions. [2020-10-27 06:41:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:41,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-27 06:41:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:41,409 INFO L225 Difference]: With dead ends: 1159 [2020-10-27 06:41:41,409 INFO L226 Difference]: Without dead ends: 659 [2020-10-27 06:41:41,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-27 06:41:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 522. [2020-10-27 06:41:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-27 06:41:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 774 transitions. [2020-10-27 06:41:41,467 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 774 transitions. Word has length 61 [2020-10-27 06:41:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:41,467 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 774 transitions. [2020-10-27 06:41:41,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 774 transitions. [2020-10-27 06:41:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 06:41:41,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:41,469 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:41,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:41:41,469 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash 504333292, now seen corresponding path program 1 times [2020-10-27 06:41:41,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:41,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941109544] [2020-10-27 06:41:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:44,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 06:41:44,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:41:44,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2751 [2020-10-27 06:41:44,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:41:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 06:41:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 06:41:44,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:44,604 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:44,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:44,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:44,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:44,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:41:44,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:41:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:44,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:44,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:44,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:41:44,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:41:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:41:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:41:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:44,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941109544] [2020-10-27 06:41:44,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:44,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 06:41:44,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259074628] [2020-10-27 06:41:44,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:41:44,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:44,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:41:44,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:41:44,775 INFO L87 Difference]: Start difference. First operand 522 states and 774 transitions. Second operand 6 states. [2020-10-27 06:41:45,138 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:47,256 INFO L93 Difference]: Finished difference Result 1643 states and 2610 transitions. [2020-10-27 06:41:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 06:41:47,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-27 06:41:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:47,265 INFO L225 Difference]: With dead ends: 1643 [2020-10-27 06:41:47,265 INFO L226 Difference]: Without dead ends: 1181 [2020-10-27 06:41:47,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:41:47,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2020-10-27 06:41:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 830. [2020-10-27 06:41:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-27 06:41:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1262 transitions. [2020-10-27 06:41:47,361 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1262 transitions. Word has length 61 [2020-10-27 06:41:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:47,362 INFO L481 AbstractCegarLoop]: Abstraction has 830 states and 1262 transitions. [2020-10-27 06:41:47,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:41:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1262 transitions. [2020-10-27 06:41:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:41:47,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:47,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:47,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:41:47,365 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:47,365 INFO L82 PathProgramCache]: Analyzing trace with hash -491248517, now seen corresponding path program 1 times [2020-10-27 06:41:47,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:47,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580601308] [2020-10-27 06:41:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:48,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:41:48,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:41:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-27 06:41:48,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:41:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 06:41:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:41:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:48,685 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:48,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:48,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:48,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:41:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:48,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:48,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:48,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:48,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:41:48,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:41:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:41:48,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:48,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580601308] [2020-10-27 06:41:48,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:48,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 06:41:48,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890749465] [2020-10-27 06:41:48,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:41:48,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:41:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:41:48,784 INFO L87 Difference]: Start difference. First operand 830 states and 1262 transitions. Second operand 6 states. [2020-10-27 06:41:49,060 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:51,417 INFO L93 Difference]: Finished difference Result 3059 states and 5009 transitions. [2020-10-27 06:41:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 06:41:51,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-27 06:41:51,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:51,436 INFO L225 Difference]: With dead ends: 3059 [2020-10-27 06:41:51,436 INFO L226 Difference]: Without dead ends: 2289 [2020-10-27 06:41:51,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:41:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-10-27 06:41:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1554. [2020-10-27 06:41:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 06:41:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2445 transitions. [2020-10-27 06:41:51,620 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2445 transitions. Word has length 62 [2020-10-27 06:41:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:51,621 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2445 transitions. [2020-10-27 06:41:51,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:41:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2445 transitions. [2020-10-27 06:41:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:41:51,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:51,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:51,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:41:51,626 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:51,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1775132669, now seen corresponding path program 1 times [2020-10-27 06:41:51,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:51,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709900512] [2020-10-27 06:41:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:52,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:41:52,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:41:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-27 06:41:52,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:41:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:52,828 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:52,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:52,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:52,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:41:52,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:52,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:52,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:41:52,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:52,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709900512] [2020-10-27 06:41:52,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:52,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:52,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675075271] [2020-10-27 06:41:52,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:52,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:52,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:52,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:52,905 INFO L87 Difference]: Start difference. First operand 1554 states and 2445 transitions. Second operand 5 states. [2020-10-27 06:41:53,205 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:54,560 INFO L93 Difference]: Finished difference Result 3533 states and 5644 transitions. [2020-10-27 06:41:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:54,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-27 06:41:54,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:54,574 INFO L225 Difference]: With dead ends: 3533 [2020-10-27 06:41:54,574 INFO L226 Difference]: Without dead ends: 2047 [2020-10-27 06:41:54,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2020-10-27 06:41:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1512. [2020-10-27 06:41:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1512 states. [2020-10-27 06:41:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2386 transitions. [2020-10-27 06:41:54,753 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2386 transitions. Word has length 62 [2020-10-27 06:41:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:54,753 INFO L481 AbstractCegarLoop]: Abstraction has 1512 states and 2386 transitions. [2020-10-27 06:41:54,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2386 transitions. [2020-10-27 06:41:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 06:41:54,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:54,755 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:54,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:41:54,756 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:54,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:54,757 INFO L82 PathProgramCache]: Analyzing trace with hash 741605709, now seen corresponding path program 1 times [2020-10-27 06:41:54,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:54,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834197452] [2020-10-27 06:41:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:54,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:55,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 06:41:55,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:41:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 06:41:55,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 06:41:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 06:41:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-10-27 06:41:55,512 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:55,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:55,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:41:55,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:55,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:55,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:41:55,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:41:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:55,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834197452] [2020-10-27 06:41:55,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:55,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:55,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301290609] [2020-10-27 06:41:55,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:55,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:55,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:55,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:55,604 INFO L87 Difference]: Start difference. First operand 1512 states and 2386 transitions. Second operand 5 states. [2020-10-27 06:41:55,926 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:41:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:58,018 INFO L93 Difference]: Finished difference Result 4997 states and 8179 transitions. [2020-10-27 06:41:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:41:58,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-27 06:41:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:58,039 INFO L225 Difference]: With dead ends: 4997 [2020-10-27 06:41:58,040 INFO L226 Difference]: Without dead ends: 3553 [2020-10-27 06:41:58,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2020-10-27 06:41:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 2658. [2020-10-27 06:41:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-10-27 06:41:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 4237 transitions. [2020-10-27 06:41:58,341 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 4237 transitions. Word has length 63 [2020-10-27 06:41:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:58,342 INFO L481 AbstractCegarLoop]: Abstraction has 2658 states and 4237 transitions. [2020-10-27 06:41:58,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 4237 transitions. [2020-10-27 06:41:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 06:41:58,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:58,348 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:58,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:41:58,348 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:58,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1286980401, now seen corresponding path program 1 times [2020-10-27 06:41:58,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:58,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602966748] [2020-10-27 06:41:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:58,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:58,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 06:41:58,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:41:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 06:41:58,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:41:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:59,066 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:59,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:59,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:59,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:59,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:41:59,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:59,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:59,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:59,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:41:59,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:59,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602966748] [2020-10-27 06:41:59,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:59,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:59,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165605466] [2020-10-27 06:41:59,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:59,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:59,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:59,166 INFO L87 Difference]: Start difference. First operand 2658 states and 4237 transitions. Second operand 5 states. [2020-10-27 06:41:59,437 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:42:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:00,941 INFO L93 Difference]: Finished difference Result 6091 states and 9786 transitions. [2020-10-27 06:42:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:42:00,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-27 06:42:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:00,965 INFO L225 Difference]: With dead ends: 6091 [2020-10-27 06:42:00,965 INFO L226 Difference]: Without dead ends: 3501 [2020-10-27 06:42:00,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:42:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2020-10-27 06:42:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2610. [2020-10-27 06:42:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-10-27 06:42:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 4170 transitions. [2020-10-27 06:42:01,327 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 4170 transitions. Word has length 63 [2020-10-27 06:42:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:01,328 INFO L481 AbstractCegarLoop]: Abstraction has 2610 states and 4170 transitions. [2020-10-27 06:42:01,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:42:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 4170 transitions. [2020-10-27 06:42:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 06:42:01,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:01,331 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:42:01,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 06:42:01,331 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash 93806362, now seen corresponding path program 1 times [2020-10-27 06:42:01,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:01,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868244215] [2020-10-27 06:42:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:01,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:01,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 06:42:01,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:42:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 06:42:01,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 06:42:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 06:42:01,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:01,896 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:01,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:42:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:01,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:42:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:01,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:42:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:42:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:42:01,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868244215] [2020-10-27 06:42:01,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:42:01,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 06:42:01,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146107091] [2020-10-27 06:42:01,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:42:01,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:01,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:42:01,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:42:01,984 INFO L87 Difference]: Start difference. First operand 2610 states and 4170 transitions. Second operand 6 states. [2020-10-27 06:42:02,282 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:42:04,062 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:42:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:05,619 INFO L93 Difference]: Finished difference Result 8271 states and 14596 transitions. [2020-10-27 06:42:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 06:42:05,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-27 06:42:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:05,667 INFO L225 Difference]: With dead ends: 8271 [2020-10-27 06:42:05,667 INFO L226 Difference]: Without dead ends: 6805 [2020-10-27 06:42:05,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-27 06:42:05,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6805 states. [2020-10-27 06:42:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6805 to 3784. [2020-10-27 06:42:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-10-27 06:42:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6303 transitions. [2020-10-27 06:42:06,223 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6303 transitions. Word has length 64 [2020-10-27 06:42:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:06,223 INFO L481 AbstractCegarLoop]: Abstraction has 3784 states and 6303 transitions. [2020-10-27 06:42:06,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:42:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6303 transitions. [2020-10-27 06:42:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 06:42:06,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:06,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-27 06:42:06,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 06:42:06,231 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:06,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:06,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1920138805, now seen corresponding path program 1 times [2020-10-27 06:42:06,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:06,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897593953] [2020-10-27 06:42:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 06:42:06,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:42:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-27 06:42:06,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 06:42:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 06:42:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,855 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:06,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:06,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:42:06,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:42:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:42:06,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:42:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 06:42:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:42:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:42:06,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:42:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:42:06,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897593953] [2020-10-27 06:42:06,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:42:06,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 06:42:06,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226709568] [2020-10-27 06:42:06,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:42:06,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:06,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:42:06,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:42:06,948 INFO L87 Difference]: Start difference. First operand 3784 states and 6303 transitions. Second operand 5 states. [2020-10-27 06:42:07,488 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:42:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:10,160 INFO L93 Difference]: Finished difference Result 13019 states and 22255 transitions. [2020-10-27 06:42:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:42:10,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-27 06:42:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:10,217 INFO L225 Difference]: With dead ends: 13019 [2020-10-27 06:42:10,217 INFO L226 Difference]: Without dead ends: 7879 [2020-10-27 06:42:10,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:42:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7879 states. [2020-10-27 06:42:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7879 to 5900. [2020-10-27 06:42:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5900 states. [2020-10-27 06:42:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5900 states to 5900 states and 9971 transitions. [2020-10-27 06:42:11,118 INFO L78 Accepts]: Start accepts. Automaton has 5900 states and 9971 transitions. Word has length 87 [2020-10-27 06:42:11,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:11,118 INFO L481 AbstractCegarLoop]: Abstraction has 5900 states and 9971 transitions. [2020-10-27 06:42:11,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:42:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5900 states and 9971 transitions. [2020-10-27 06:42:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 06:42:11,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:11,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:42:11,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 06:42:11,133 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:11,134 INFO L82 PathProgramCache]: Analyzing trace with hash 683108839, now seen corresponding path program 1 times [2020-10-27 06:42:11,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:11,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555190936] [2020-10-27 06:42:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:11,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:11,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:11,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 06:42:11,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:42:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-27 06:42:11,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 06:42:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 06:42:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:12,137 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:42:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:12,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:42:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:12,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:12,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:12,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:42:12,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:12,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:12,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 06:42:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:12,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:12,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:42:12,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:12,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 06:42:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 06:42:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:12,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:12,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:42:12,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:12,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:42:12,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:42:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:12,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:12,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 06:42:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:12,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:12,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:42:12,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:12,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:42:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:12,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 06:42:12,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555190936] [2020-10-27 06:42:12,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:42:12,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 06:42:12,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670410829] [2020-10-27 06:42:12,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:42:12,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:42:12,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:42:12,268 INFO L87 Difference]: Start difference. First operand 5900 states and 9971 transitions. Second operand 6 states. [2020-10-27 06:42:12,652 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:42:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:15,758 INFO L93 Difference]: Finished difference Result 24305 states and 41599 transitions. [2020-10-27 06:42:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 06:42:15,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-27 06:42:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:15,944 INFO L225 Difference]: With dead ends: 24305 [2020-10-27 06:42:15,944 INFO L226 Difference]: Without dead ends: 18463 [2020-10-27 06:42:16,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:42:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2020-10-27 06:42:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 13762. [2020-10-27 06:42:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13762 states. [2020-10-27 06:42:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13762 states to 13762 states and 22623 transitions. [2020-10-27 06:42:17,707 INFO L78 Accepts]: Start accepts. Automaton has 13762 states and 22623 transitions. Word has length 104 [2020-10-27 06:42:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:17,708 INFO L481 AbstractCegarLoop]: Abstraction has 13762 states and 22623 transitions. [2020-10-27 06:42:17,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:42:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 13762 states and 22623 transitions. [2020-10-27 06:42:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 06:42:17,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:17,844 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:42:17,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 06:42:17,844 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash 618449961, now seen corresponding path program 1 times [2020-10-27 06:42:17,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:17,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182107491] [2020-10-27 06:42:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:17,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:17,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:17,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:18,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:22,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 06:42:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:42:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 06:42:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:42:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 06:42:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 06:42:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:42:23,191 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:23,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:42:23,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 06:42:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 06:42:23,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 06:42:23,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:42:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 06:42:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:42:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:42:23,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 06:42:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:23,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:42:23,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:42:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:42:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 06:42:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:42:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:42:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 06:42:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:23,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:42:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 06:42:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:42:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:42:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:42:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 06:42:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:23,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:23,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:42:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:23,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:42:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 06:42:23,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182107491] [2020-10-27 06:42:23,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:42:23,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 06:42:23,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149448923] [2020-10-27 06:42:23,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 06:42:23,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:23,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 06:42:23,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:42:23,691 INFO L87 Difference]: Start difference. First operand 13762 states and 22623 transitions. Second operand 11 states. [2020-10-27 06:42:23,986 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 06:42:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:31,856 INFO L93 Difference]: Finished difference Result 60595 states and 101995 transitions. [2020-10-27 06:42:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 06:42:31,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-10-27 06:42:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:32,150 INFO L225 Difference]: With dead ends: 60595 [2020-10-27 06:42:32,150 INFO L226 Difference]: Without dead ends: 46842 [2020-10-27 06:42:32,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2020-10-27 06:42:32,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46842 states. [2020-10-27 06:42:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46842 to 30185. [2020-10-27 06:42:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30185 states. [2020-10-27 06:42:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30185 states to 30185 states and 50633 transitions. [2020-10-27 06:42:35,656 INFO L78 Accepts]: Start accepts. Automaton has 30185 states and 50633 transitions. Word has length 162 [2020-10-27 06:42:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:35,657 INFO L481 AbstractCegarLoop]: Abstraction has 30185 states and 50633 transitions. [2020-10-27 06:42:35,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 06:42:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 30185 states and 50633 transitions. [2020-10-27 06:42:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 06:42:35,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:35,790 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:42:35,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:42:35,791 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:35,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:35,791 INFO L82 PathProgramCache]: Analyzing trace with hash -328831322, now seen corresponding path program 1 times [2020-10-27 06:42:35,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:35,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340198376] [2020-10-27 06:42:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:35,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:40,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:40,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 06:42:40,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:42:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 06:42:40,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:42:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:42:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 06:42:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,154 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:42:41,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:42:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 06:42:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 06:42:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 06:42:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:42:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 06:42:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:42:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:41,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:42:41,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:42:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 06:42:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:41,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:42:41,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:42:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:42:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:41,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 06:42:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:42:41,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:42:41,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:42:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:42:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 06:42:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:42:41,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:42:41,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:42:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:41,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-27 06:42:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:41,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:41,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:42:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 06:42:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:41,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:41,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:42:41,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:41,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:42:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 06:42:41,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340198376] [2020-10-27 06:42:41,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:42:41,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 06:42:41,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248645637] [2020-10-27 06:42:41,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 06:42:41,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:41,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 06:42:41,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:42:41,841 INFO L87 Difference]: Start difference. First operand 30185 states and 50633 transitions. Second operand 15 states. [2020-10-27 06:42:42,558 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-27 06:42:42,779 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-27 06:42:42,902 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-27 06:42:43,274 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-27 06:42:43,482 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-27 06:42:43,773 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-27 06:42:44,203 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-27 06:42:44,474 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-27 06:42:45,207 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 06:42:47,855 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 119 [2020-10-27 06:42:48,520 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-27 06:42:48,876 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-27 06:42:49,269 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-27 06:42:51,298 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-27 06:42:51,834 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-27 06:42:52,059 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-27 06:42:52,297 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-27 06:42:52,540 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-27 06:42:52,801 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-27 06:42:53,479 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-27 06:43:00,002 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-27 06:43:24,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:43:24,166 INFO L93 Difference]: Finished difference Result 275430 states and 488250 transitions. [2020-10-27 06:43:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-27 06:43:24,167 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 157 [2020-10-27 06:43:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:43:26,388 INFO L225 Difference]: With dead ends: 275430 [2020-10-27 06:43:26,388 INFO L226 Difference]: Without dead ends: 245282 [2020-10-27 06:43:26,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3138 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1546, Invalid=6826, Unknown=0, NotChecked=0, Total=8372 [2020-10-27 06:43:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245282 states. [2020-10-27 06:43:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245282 to 172943. [2020-10-27 06:43:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172943 states. [2020-10-27 06:43:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172943 states to 172943 states and 311143 transitions. [2020-10-27 06:43:48,240 INFO L78 Accepts]: Start accepts. Automaton has 172943 states and 311143 transitions. Word has length 157 [2020-10-27 06:43:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:43:48,240 INFO L481 AbstractCegarLoop]: Abstraction has 172943 states and 311143 transitions. [2020-10-27 06:43:48,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 06:43:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 172943 states and 311143 transitions. [2020-10-27 06:43:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 06:43:49,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:43:49,105 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:43:49,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 06:43:49,105 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:43:49,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:43:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1925252937, now seen corresponding path program 1 times [2020-10-27 06:43:49,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:43:49,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319928367] [2020-10-27 06:43:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:43:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:54,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 06:43:54,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:43:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 06:43:54,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:43:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:43:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 06:43:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:54,445 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:43:54,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:43:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:54,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:43:54,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:43:54,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 06:43:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:54,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 06:43:54,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:43:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 06:43:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:43:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:43:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 06:43:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:43:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:43:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 06:43:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:54,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:43:54,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:43:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:43:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:43:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:43:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:43:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:43:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:43:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 06:43:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 06:43:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:43:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:55,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 06:43:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:55,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 06:43:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:43:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 06:43:55,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319928367] [2020-10-27 06:43:55,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:43:55,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 06:43:55,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248988026] [2020-10-27 06:43:55,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 06:43:55,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:43:55,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 06:43:55,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 06:43:55,106 INFO L87 Difference]: Start difference. First operand 172943 states and 311143 transitions. Second operand 14 states. [2020-10-27 06:43:55,434 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:43:58,311 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:43:58,686 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 120