/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=DEEPEST --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/pipeline.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:03:05,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:03:05,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:03:05,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:03:05,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:03:05,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:03:05,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:03:05,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:03:05,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:03:05,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:03:05,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:03:05,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:03:05,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:03:05,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:03:05,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:03:05,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:03:05,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:03:05,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:03:05,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:03:05,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:03:05,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:03:05,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:03:05,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:03:05,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:03:05,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:03:05,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:03:05,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:03:05,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:03:05,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:03:05,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:03:05,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:03:05,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:03:05,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:03:05,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:03:05,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:03:05,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:03:05,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:03:05,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:03:05,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:03:05,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:03:05,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:03:05,210 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 [2020-10-28 01:03:05,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:03:05,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:03:05,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:03:05,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:03:05,239 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:03:05,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:03:05,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:03:05,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:03:05,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:03:05,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:03:05,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:03:05,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:03:05,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:03:05,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:03:05,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:03:05,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:03:05,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:03:05,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:03:05,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:03:05,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:03:05,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:03:05,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:03:05,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:03:05,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:03:05,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:03:05,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:03:05,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:03:05,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:03:05,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:03:05,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:03:05,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:03:05,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:03:05,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:03:05,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:03:05,709 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:03:05,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pipeline.cil-1.c [2020-10-28 01:03:05,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a575ed0/f9f0abb218174f49a980fae7abd51f0d/FLAG80538877b [2020-10-28 01:03:06,524 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:03:06,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pipeline.cil-1.c [2020-10-28 01:03:06,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a575ed0/f9f0abb218174f49a980fae7abd51f0d/FLAG80538877b [2020-10-28 01:03:06,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a575ed0/f9f0abb218174f49a980fae7abd51f0d [2020-10-28 01:03:06,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:03:06,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:03:06,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:03:06,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:03:06,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:03:06,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:03:06" (1/1) ... [2020-10-28 01:03:06,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd71d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:06, skipping insertion in model container [2020-10-28 01:03:06,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:03:06" (1/1) ... [2020-10-28 01:03:06,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:03:06,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:03:07,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:03:07,362 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:03:07,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:03:07,450 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:03:07,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07 WrapperNode [2020-10-28 01:03:07,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:03:07,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:03:07,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:03:07,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:03:07,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (1/1) ... [2020-10-28 01:03:07,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (1/1) ... [2020-10-28 01:03:07,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (1/1) ... [2020-10-28 01:03:07,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (1/1) ... [2020-10-28 01:03:07,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (1/1) ... [2020-10-28 01:03:07,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (1/1) ... [2020-10-28 01:03:07,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (1/1) ... [2020-10-28 01:03:07,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:03:07,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:03:07,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:03:07,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:03:07,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (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 [2020-10-28 01:03:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:03:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:03:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:03:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 01:03:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure N_generate [2020-10-28 01:03:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure S1_addsub [2020-10-28 01:03:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure S2_presdbl [2020-10-28 01:03:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure S3_zero [2020-10-28 01:03:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure D_print [2020-10-28 01:03:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 01:03:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 01:03:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:03:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:03:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:03:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:03:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:03:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:03:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 01:03:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure N_generate [2020-10-28 01:03:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure S1_addsub [2020-10-28 01:03:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure S2_presdbl [2020-10-28 01:03:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure S3_zero [2020-10-28 01:03:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure D_print [2020-10-28 01:03:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 01:03:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 01:03:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:03:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:03:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:03:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:03:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:03:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:03:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:03:08,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:03:08,406 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 01:03:08,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:03:08 BoogieIcfgContainer [2020-10-28 01:03:08,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:03:08,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:03:08,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:03:08,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:03:08,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:03:06" (1/3) ... [2020-10-28 01:03:08,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2675ab63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:03:08, skipping insertion in model container [2020-10-28 01:03:08,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:07" (2/3) ... [2020-10-28 01:03:08,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2675ab63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:03:08, skipping insertion in model container [2020-10-28 01:03:08,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:03:08" (3/3) ... [2020-10-28 01:03:08,417 INFO L111 eAbstractionObserver]: Analyzing ICFG pipeline.cil-1.c [2020-10-28 01:03:08,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:03:08,442 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:03:08,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:03:08,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:03:08,485 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:03:08,485 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:03:08,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:03:08,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:03:08,486 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:03:08,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:03:08,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:03:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-10-28 01:03:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 01:03:08,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:08,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:08,527 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash 252079489, now seen corresponding path program 1 times [2020-10-28 01:03:08,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:08,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210614319] [2020-10-28 01:03:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:11,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:13,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:13,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 01:03:13,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 01:03:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 01:03:13,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:03:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 01:03:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:03:13,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 01:03:14,266 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:03:14,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:14,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:14,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:03:14,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:14,451 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:03:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:03:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:14,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 01:03:14,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:03:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-28 01:03:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:03:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 01:03:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:14,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:15,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:15,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 01:03:15,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:03:15,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 01:03:15,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:03:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:15,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 01:03:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-28 01:03:15,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210614319] [2020-10-28 01:03:15,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:03:15,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:03:15,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493962924] [2020-10-28 01:03:15,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:03:15,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:15,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:03:15,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:03:15,365 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 5 states. [2020-10-28 01:03:15,916 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:03:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:17,371 INFO L93 Difference]: Finished difference Result 441 states and 743 transitions. [2020-10-28 01:03:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:03:17,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-28 01:03:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:17,389 INFO L225 Difference]: With dead ends: 441 [2020-10-28 01:03:17,389 INFO L226 Difference]: Without dead ends: 261 [2020-10-28 01:03:17,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-28 01:03:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 200. [2020-10-28 01:03:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-28 01:03:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 326 transitions. [2020-10-28 01:03:17,474 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 326 transitions. Word has length 100 [2020-10-28 01:03:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:17,475 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 326 transitions. [2020-10-28 01:03:17,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:03:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 326 transitions. [2020-10-28 01:03:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 01:03:17,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:17,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:17,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:03:17,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:17,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:17,488 INFO L82 PathProgramCache]: Analyzing trace with hash 664479854, now seen corresponding path program 1 times [2020-10-28 01:03:17,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:17,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538447760] [2020-10-28 01:03:17,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:18,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:22,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 01:03:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 01:03:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 01:03:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 01:03:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:03:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:22,886 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:03:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:22,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:03:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:23,087 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:03:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:03:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:28,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:03:28,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:03:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:03:28,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 01:03:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:03:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:03:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:28,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:03:28,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:03:28,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:03:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:28,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 01:03:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:28,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:29,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:33,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:03:33,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:03:33,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:03:33,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 01:03:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:03:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:03:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:33,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:03:33,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:33,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:03:33,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:03:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:03:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-28 01:03:33,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538447760] [2020-10-28 01:03:33,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:03:33,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:03:33,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101686419] [2020-10-28 01:03:33,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:03:33,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:33,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:03:33,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:33,494 INFO L87 Difference]: Start difference. First operand 200 states and 326 transitions. Second operand 6 states. [2020-10-28 01:03:33,902 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:03:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:35,641 INFO L93 Difference]: Finished difference Result 661 states and 1088 transitions. [2020-10-28 01:03:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:35,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-10-28 01:03:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:35,649 INFO L225 Difference]: With dead ends: 661 [2020-10-28 01:03:35,649 INFO L226 Difference]: Without dead ends: 491 [2020-10-28 01:03:35,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:03:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-28 01:03:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 364. [2020-10-28 01:03:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-28 01:03:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 600 transitions. [2020-10-28 01:03:35,728 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 600 transitions. Word has length 204 [2020-10-28 01:03:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:35,731 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 600 transitions. [2020-10-28 01:03:35,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:03:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 600 transitions. [2020-10-28 01:03:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 01:03:35,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:35,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:35,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:03:35,743 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:35,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:35,743 INFO L82 PathProgramCache]: Analyzing trace with hash -464840594, now seen corresponding path program 1 times [2020-10-28 01:03:35,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:35,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028885466] [2020-10-28 01:03:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:40,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:40,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 01:03:40,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-28 01:03:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 01:03:40,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 01:03:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:03:40,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:03:41,134 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:03:41,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:41,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:41,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:03:41,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:41,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:41,302 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:03:41,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:03:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:46,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:03:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:03:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:03:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 01:03:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:03:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:03:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:46,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:46,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:03:46,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:03:46,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:03:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 01:03:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:51,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:03:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:03:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:03:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 01:03:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:03:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:03:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:03:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:51,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:51,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:03:51,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:03:51,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:03:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:03:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-28 01:03:51,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028885466] [2020-10-28 01:03:51,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:03:51,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:03:51,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621444498] [2020-10-28 01:03:51,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:03:51,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:03:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:51,574 INFO L87 Difference]: Start difference. First operand 364 states and 600 transitions. Second operand 6 states. [2020-10-28 01:03:51,853 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:03:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:52,979 INFO L93 Difference]: Finished difference Result 1251 states and 2094 transitions. [2020-10-28 01:03:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:52,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-10-28 01:03:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:52,996 INFO L225 Difference]: With dead ends: 1251 [2020-10-28 01:03:52,997 INFO L226 Difference]: Without dead ends: 917 [2020-10-28 01:03:53,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:03:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-10-28 01:03:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 696. [2020-10-28 01:03:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-28 01:03:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1163 transitions. [2020-10-28 01:03:53,125 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1163 transitions. Word has length 204 [2020-10-28 01:03:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:53,125 INFO L481 AbstractCegarLoop]: Abstraction has 696 states and 1163 transitions. [2020-10-28 01:03:53,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:03:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1163 transitions. [2020-10-28 01:03:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 01:03:53,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:53,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:53,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:03:53,134 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:53,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1114036114, now seen corresponding path program 1 times [2020-10-28 01:03:53,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:53,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362046395] [2020-10-28 01:03:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:58,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 01:03:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-28 01:03:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 01:03:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 01:03:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:03:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:58,454 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:03:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:03:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:58,617 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:03:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:03:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:58,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:03,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:04:03,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:04:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:04:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 01:04:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:04:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:04:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:03,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:04:03,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:04:03,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:04:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 01:04:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:08,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:08,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:04:08,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 01:04:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:04:08,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 01:04:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:04:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:04:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:08,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:08,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:04:08,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:04:08,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:04:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-28 01:04:08,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362046395] [2020-10-28 01:04:08,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:04:08,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:04:08,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355803661] [2020-10-28 01:04:08,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:04:08,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:04:08,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:04:08,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:04:08,871 INFO L87 Difference]: Start difference. First operand 696 states and 1163 transitions. Second operand 6 states. [2020-10-28 01:04:09,160 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:04:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:04:10,356 INFO L93 Difference]: Finished difference Result 2434 states and 4185 transitions. [2020-10-28 01:04:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:04:10,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-10-28 01:04:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:04:10,387 INFO L225 Difference]: With dead ends: 2434 [2020-10-28 01:04:10,387 INFO L226 Difference]: Without dead ends: 1770 [2020-10-28 01:04:10,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:04:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-10-28 01:04:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1363. [2020-10-28 01:04:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-10-28 01:04:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2334 transitions. [2020-10-28 01:04:10,538 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2334 transitions. Word has length 204 [2020-10-28 01:04:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:04:10,539 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 2334 transitions. [2020-10-28 01:04:10,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:04:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2334 transitions. [2020-10-28 01:04:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 01:04:10,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:04:10,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:04:10,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:04:10,556 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:04:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:04:10,557 INFO L82 PathProgramCache]: Analyzing trace with hash 235739246, now seen corresponding path program 1 times [2020-10-28 01:04:10,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:04:10,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535118900] [2020-10-28 01:04:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:04:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:15,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 01:04:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-28 01:04:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:04:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 01:04:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:04:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:15,864 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:04:15,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:04:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:15,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:04:15,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:04:15,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:16,052 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:04:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:04:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:21,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:04:21,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 01:04:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:04:21,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 01:04:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:04:21,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:21,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:04:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:04:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:04:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 01:04:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:26,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:26,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:04:26,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:04:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:04:26,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 01:04:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:04:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:04:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:26,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:26,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:04:26,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:04:26,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:04:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-28 01:04:26,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535118900] [2020-10-28 01:04:26,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:04:26,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 01:04:26,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931793670] [2020-10-28 01:04:26,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:04:26,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:04:26,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:04:26,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:04:26,271 INFO L87 Difference]: Start difference. First operand 1363 states and 2334 transitions. Second operand 7 states. [2020-10-28 01:04:26,558 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:04:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:04:27,938 INFO L93 Difference]: Finished difference Result 5282 states and 9597 transitions. [2020-10-28 01:04:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 01:04:27,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-28 01:04:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:04:28,000 INFO L225 Difference]: With dead ends: 5282 [2020-10-28 01:04:28,000 INFO L226 Difference]: Without dead ends: 3958 [2020-10-28 01:04:28,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:04:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2020-10-28 01:04:28,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3183. [2020-10-28 01:04:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3183 states. [2020-10-28 01:04:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 5726 transitions. [2020-10-28 01:04:28,329 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 5726 transitions. Word has length 204 [2020-10-28 01:04:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:04:28,330 INFO L481 AbstractCegarLoop]: Abstraction has 3183 states and 5726 transitions. [2020-10-28 01:04:28,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:04:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 5726 transitions. [2020-10-28 01:04:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 01:04:28,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:04:28,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:04:28,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:04:28,396 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:04:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:04:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash -875580298, now seen corresponding path program 1 times [2020-10-28 01:04:28,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:04:28,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67698997] [2020-10-28 01:04:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:04:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 01:04:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:04:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:33,683 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:04:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:04:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:33,847 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:04:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:04:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:33,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:38,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:38,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:04:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 01:04:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:04:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 01:04:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:04:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:38,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:04:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:38,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:38,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:04:38,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:04:38,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:38,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:38,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:04:38,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 01:04:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:39,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:43,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:04:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:04:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:44,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:44,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:04:44,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:04:44,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:44,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:44,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:04:44,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 01:04:44,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67698997] [2020-10-28 01:04:44,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:04:44,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 01:04:44,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709427942] [2020-10-28 01:04:44,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:04:44,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:04:44,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:04:44,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:04:44,067 INFO L87 Difference]: Start difference. First operand 3183 states and 5726 transitions. Second operand 7 states. [2020-10-28 01:04:44,386 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 01:04:45,254 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:04:45,530 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:04:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:04:47,589 INFO L93 Difference]: Finished difference Result 18693 states and 41400 transitions. [2020-10-28 01:04:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:04:47,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-28 01:04:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:04:48,024 INFO L225 Difference]: With dead ends: 18693 [2020-10-28 01:04:48,025 INFO L226 Difference]: Without dead ends: 15569 [2020-10-28 01:04:48,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:04:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15569 states. [2020-10-28 01:04:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15569 to 12554. [2020-10-28 01:04:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12554 states. [2020-10-28 01:04:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 28387 transitions. [2020-10-28 01:04:50,963 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 28387 transitions. Word has length 204 [2020-10-28 01:04:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:04:50,963 INFO L481 AbstractCegarLoop]: Abstraction has 12554 states and 28387 transitions. [2020-10-28 01:04:50,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:04:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 28387 transitions. [2020-10-28 01:04:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 01:04:51,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:04:51,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:04:51,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:04:51,504 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:04:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:04:51,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1471008122, now seen corresponding path program 1 times [2020-10-28 01:04:51,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:04:51,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546930627] [2020-10-28 01:04:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:04:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:51,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:52,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:52,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 01:04:56,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 01:04:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 01:04:56,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:04:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 01:04:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:04:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:56,961 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:04:56,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:04:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:56,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:04:56,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:04:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:57,131 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:04:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:04:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:05:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 01:05:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:05:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 01:05:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:05:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:05:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:05:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 01:05:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:03,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:03,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:07,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:07,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:05:07,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:05:07,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:05:07,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:07,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:07,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:05:07,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:05:07,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:07,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:05:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:07,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:05:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:05:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:05:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:05:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:05:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 01:05:07,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546930627] [2020-10-28 01:05:07,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:05:07,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:05:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530773449] [2020-10-28 01:05:07,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:05:07,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:05:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:05:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:05:07,373 INFO L87 Difference]: Start difference. First operand 12554 states and 28387 transitions. Second operand 6 states. [2020-10-28 01:05:07,661 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:05:12,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:05:12,035 INFO L93 Difference]: Finished difference Result 35661 states and 96338 transitions. [2020-10-28 01:05:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:05:12,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-10-28 01:05:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:05:12,840 INFO L225 Difference]: With dead ends: 35661 [2020-10-28 01:05:12,840 INFO L226 Difference]: Without dead ends: 23209 [2020-10-28 01:05:13,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:05:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23209 states. [2020-10-28 01:05:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23209 to 18762. [2020-10-28 01:05:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18762 states. [2020-10-28 01:05:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18762 states to 18762 states and 46851 transitions. [2020-10-28 01:05:17,595 INFO L78 Accepts]: Start accepts. Automaton has 18762 states and 46851 transitions. Word has length 204 [2020-10-28 01:05:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:05:17,596 INFO L481 AbstractCegarLoop]: Abstraction has 18762 states and 46851 transitions. [2020-10-28 01:05:17,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:05:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18762 states and 46851 transitions. [2020-10-28 01:05:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 01:05:18,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:05:18,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:05:18,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:05:18,756 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:05:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:05:18,756 INFO L82 PathProgramCache]: Analyzing trace with hash 658268674, now seen corresponding path program 1 times [2020-10-28 01:05:18,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:05:18,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047688520] [2020-10-28 01:05:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:05:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:18,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:19,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:23,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:23,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 01:05:23,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:05:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 01:05:23,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:05:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 01:05:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 01:05:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:24,111 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 01:05:24,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:05:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:05:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:05:24,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:24,296 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:05:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:05:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:25,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:05:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:05:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:05:29,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:29,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 01:05:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:32,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:34,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:34,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:05:34,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:05:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 01:05:34,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 01:05:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:05:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:34,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:05:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:05:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:05:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:05:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:05:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-28 01:05:34,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047688520] [2020-10-28 01:05:34,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:05:34,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:05:34,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319235507] [2020-10-28 01:05:34,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:05:34,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:05:34,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:05:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:05:34,493 INFO L87 Difference]: Start difference. First operand 18762 states and 46851 transitions. Second operand 7 states. [2020-10-28 01:05:34,802 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 01:05:35,638 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:05:35,913 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 01:05:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:05:54,785 INFO L93 Difference]: Finished difference Result 104982 states and 548831 transitions. [2020-10-28 01:05:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:05:54,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-28 01:05:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:06:01,595 INFO L225 Difference]: With dead ends: 104982 [2020-10-28 01:06:01,596 INFO L226 Difference]: Without dead ends: 86322 [2020-10-28 01:06:05,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:06:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86322 states.