/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:00:25,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:00:25,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:00:26,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:00:26,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:00:26,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:00:26,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:00:26,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:00:26,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:00:26,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:00:26,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:00:26,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:00:26,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:00:26,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:00:26,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:00:26,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:00:26,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:00:26,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:00:26,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:00:26,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:00:26,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:00:26,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:00:26,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:00:26,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:00:26,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:00:26,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:00:26,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:00:26,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:00:26,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:00:26,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:00:26,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:00:26,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:00:26,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:00:26,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:00:26,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:00:26,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:00:26,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:00:26,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:00:26,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:00:26,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:00:26,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:00:26,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:00:26,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:00:26,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:00:26,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:00:26,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:00:26,182 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:00:26,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:00:26,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:00:26,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:00:26,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:00:26,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:00:26,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:00:26,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:00:26,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:00:26,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:00:26,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:00:26,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:00:26,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:00:26,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:00:26,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:00:26,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:00:26,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:00:26,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:00:26,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:00:26,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:00:26,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:00:26,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:00:26,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:00:26,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:00:26,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:00:26,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:00:26,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:00:26,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:00:26,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:00:26,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:00:26,639 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:00:26,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label23.c [2020-10-29 08:00:26,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59d2abd03/1cfa5b306f7f42c09b0b72579fd92b1a/FLAGe93aed355 [2020-10-29 08:00:27,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:00:27,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label23.c [2020-10-29 08:00:27,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59d2abd03/1cfa5b306f7f42c09b0b72579fd92b1a/FLAGe93aed355 [2020-10-29 08:00:27,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59d2abd03/1cfa5b306f7f42c09b0b72579fd92b1a [2020-10-29 08:00:27,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:00:27,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:00:27,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:00:27,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:00:27,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:00:27,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:00:27" (1/1) ... [2020-10-29 08:00:27,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@847d14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:27, skipping insertion in model container [2020-10-29 08:00:27,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:00:27" (1/1) ... [2020-10-29 08:00:27,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:00:27,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:00:28,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:00:28,614 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:00:29,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:00:29,067 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:00:29,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29 WrapperNode [2020-10-29 08:00:29,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:00:29,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:00:29,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:00:29,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:00:29,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... [2020-10-29 08:00:29,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... [2020-10-29 08:00:29,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... [2020-10-29 08:00:29,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... [2020-10-29 08:00:29,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... [2020-10-29 08:00:29,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... [2020-10-29 08:00:29,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... [2020-10-29 08:00:29,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:00:29,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:00:29,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:00:29,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:00:29,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:00:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:00:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:00:29,409 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:00:29,409 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:00:29,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:00:29,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:00:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:00:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:00:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:00:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:00:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:00:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:00:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:00:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:00:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:00:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:00:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:00:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:00:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:00:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:00:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:00:32,237 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:00:32,237 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:00:32,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:00:32 BoogieIcfgContainer [2020-10-29 08:00:32,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:00:32,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:00:32,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:00:32,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:00:32,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:00:27" (1/3) ... [2020-10-29 08:00:32,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1dc8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:00:32, skipping insertion in model container [2020-10-29 08:00:32,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:00:29" (2/3) ... [2020-10-29 08:00:32,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1dc8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:00:32, skipping insertion in model container [2020-10-29 08:00:32,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:00:32" (3/3) ... [2020-10-29 08:00:32,250 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label23.c [2020-10-29 08:00:32,263 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:00:32,269 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:00:32,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:00:32,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:00:32,315 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:00:32,316 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:00:32,316 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:00:32,316 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:00:32,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:00:32,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:00:32,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:00:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 08:00:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 08:00:32,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:32,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:32,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1915662932, now seen corresponding path program 1 times [2020-10-29 08:00:32,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:32,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921858586] [2020-10-29 08:00:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:33,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 08:00:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-29 08:00:33,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:33,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:00:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:00:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 08:00:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:00:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:33,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:33,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:33,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:33,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:00:33,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:33,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:33,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:00:33,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921858586] [2020-10-29 08:00:33,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:00:33,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:00:33,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529295154] [2020-10-29 08:00:33,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:00:33,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:33,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:00:33,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:00:33,328 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-29 08:00:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:38,140 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-29 08:00:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:00:38,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-29 08:00:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:38,167 INFO L225 Difference]: With dead ends: 1174 [2020-10-29 08:00:38,167 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 08:00:38,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:00:38,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 08:00:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-29 08:00:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-29 08:00:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-29 08:00:38,291 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 38 [2020-10-29 08:00:38,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:38,292 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-29 08:00:38,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:00:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-29 08:00:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 08:00:38,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:38,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:38,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:00:38,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:38,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash 932925330, now seen corresponding path program 1 times [2020-10-29 08:00:38,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:38,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463040018] [2020-10-29 08:00:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:39,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:39,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:00:39,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:00:39,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-10-29 08:00:39,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:39,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:00:39,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:00:39,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:00:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:39,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:39,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:39,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:00:39,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:39,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:00:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 08:00:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:39,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:00:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:00:40,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463040018] [2020-10-29 08:00:40,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:00:40,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:00:40,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995708815] [2020-10-29 08:00:40,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:00:40,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:40,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:00:40,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:00:40,038 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 8 states. [2020-10-29 08:00:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:45,283 INFO L93 Difference]: Finished difference Result 1741 states and 2663 transitions. [2020-10-29 08:00:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:00:45,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-29 08:00:45,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:45,297 INFO L225 Difference]: With dead ends: 1741 [2020-10-29 08:00:45,298 INFO L226 Difference]: Without dead ends: 1057 [2020-10-29 08:00:45,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:00:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-29 08:00:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1040. [2020-10-29 08:00:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-10-29 08:00:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1424 transitions. [2020-10-29 08:00:45,405 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1424 transitions. Word has length 113 [2020-10-29 08:00:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:45,407 INFO L481 AbstractCegarLoop]: Abstraction has 1040 states and 1424 transitions. [2020-10-29 08:00:45,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:00:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1424 transitions. [2020-10-29 08:00:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 08:00:45,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:45,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:45,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:00:45,414 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:45,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1786503756, now seen corresponding path program 1 times [2020-10-29 08:00:45,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:45,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953456670] [2020-10-29 08:00:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:46,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 08:00:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:00:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-29 08:00:46,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:46,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:00:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:00:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:00:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:46,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:46,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:46,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:46,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:00:46,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:46,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:46,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:46,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:00:46,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 08:00:46,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:46,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:00:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:00:46,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953456670] [2020-10-29 08:00:46,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:00:46,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:00:46,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610571140] [2020-10-29 08:00:46,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:00:46,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:46,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:00:46,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:00:46,697 INFO L87 Difference]: Start difference. First operand 1040 states and 1424 transitions. Second operand 7 states. [2020-10-29 08:00:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:52,191 INFO L93 Difference]: Finished difference Result 3166 states and 4411 transitions. [2020-10-29 08:00:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:00:52,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-29 08:00:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:52,211 INFO L225 Difference]: With dead ends: 3166 [2020-10-29 08:00:52,211 INFO L226 Difference]: Without dead ends: 2132 [2020-10-29 08:00:52,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:00:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-29 08:00:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2089. [2020-10-29 08:00:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2089 states. [2020-10-29 08:00:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2624 transitions. [2020-10-29 08:00:52,293 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2624 transitions. Word has length 114 [2020-10-29 08:00:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:52,294 INFO L481 AbstractCegarLoop]: Abstraction has 2089 states and 2624 transitions. [2020-10-29 08:00:52,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:00:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2624 transitions. [2020-10-29 08:00:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-29 08:00:52,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:52,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:52,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:00:52,300 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:52,300 INFO L82 PathProgramCache]: Analyzing trace with hash -269078374, now seen corresponding path program 1 times [2020-10-29 08:00:52,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:52,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968036577] [2020-10-29 08:00:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:55,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-29 08:00:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:00:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3358 [2020-10-29 08:00:55,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:55,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:00:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:00:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 08:00:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:55,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:55,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:55,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:55,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:00:55,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:55,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:55,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:56,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:56,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:00:56,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:00:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 08:00:56,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:56,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:00:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:00:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:56,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:56,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:00:56,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:00:56,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:56,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:00:56,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 126 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:00:56,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968036577] [2020-10-29 08:00:56,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:00:56,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:00:56,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403951040] [2020-10-29 08:00:56,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:00:56,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:56,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:00:56,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:00:56,223 INFO L87 Difference]: Start difference. First operand 2089 states and 2624 transitions. Second operand 8 states. [2020-10-29 08:01:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:01,611 INFO L93 Difference]: Finished difference Result 4923 states and 6360 transitions. [2020-10-29 08:01:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:01:01,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-10-29 08:01:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:01,630 INFO L225 Difference]: With dead ends: 4923 [2020-10-29 08:01:01,630 INFO L226 Difference]: Without dead ends: 2840 [2020-10-29 08:01:01,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:01:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-10-29 08:01:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2454. [2020-10-29 08:01:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-10-29 08:01:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3050 transitions. [2020-10-29 08:01:01,741 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3050 transitions. Word has length 201 [2020-10-29 08:01:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:01,744 INFO L481 AbstractCegarLoop]: Abstraction has 2454 states and 3050 transitions. [2020-10-29 08:01:01,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:01:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3050 transitions. [2020-10-29 08:01:01,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-29 08:01:01,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:01,754 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:01,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:01:01,755 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:01,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1425798216, now seen corresponding path program 1 times [2020-10-29 08:01:01,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:01,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896622780] [2020-10-29 08:01:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:06,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:06,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-29 08:01:06,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:01:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 08:01:06,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:06,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-29 08:01:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 08:01:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:01:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:07,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:07,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:07,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:07,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:01:07,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:07,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:01:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:07,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:01:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:01:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:07,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 08:01:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:07,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:07,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:01:07,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:07,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:01:07,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:07,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 08:01:07,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-29 08:01:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:07,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:07,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:01:07,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 08:01:07,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:07,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:07,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:01:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 08:01:07,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896622780] [2020-10-29 08:01:07,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:07,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:01:07,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929458692] [2020-10-29 08:01:07,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:01:07,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:07,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:01:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:01:07,889 INFO L87 Difference]: Start difference. First operand 2454 states and 3050 transitions. Second operand 7 states. [2020-10-29 08:01:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:13,926 INFO L93 Difference]: Finished difference Result 6306 states and 8046 transitions. [2020-10-29 08:01:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:01:13,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 382 [2020-10-29 08:01:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:13,949 INFO L225 Difference]: With dead ends: 6306 [2020-10-29 08:01:13,949 INFO L226 Difference]: Without dead ends: 3858 [2020-10-29 08:01:13,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:01:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2020-10-29 08:01:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3494. [2020-10-29 08:01:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3494 states. [2020-10-29 08:01:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 4227 transitions. [2020-10-29 08:01:14,065 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 4227 transitions. Word has length 382 [2020-10-29 08:01:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:14,066 INFO L481 AbstractCegarLoop]: Abstraction has 3494 states and 4227 transitions. [2020-10-29 08:01:14,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:01:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 4227 transitions. [2020-10-29 08:01:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-29 08:01:14,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:14,081 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:14,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:01:14,082 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:14,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:14,082 INFO L82 PathProgramCache]: Analyzing trace with hash -456492692, now seen corresponding path program 1 times [2020-10-29 08:01:14,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:14,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875863527] [2020-10-29 08:01:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:19,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:19,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-29 08:01:19,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:01:19,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 08:01:19,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:19,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:01:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:01:19,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:01:19,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:01:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:19,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:19,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:19,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:19,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:01:19,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:19,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:01:19,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:19,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:01:19,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 08:01:19,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:19,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:01:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:01:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:20,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:20,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:01:20,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:01:20,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:20,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:20,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:20,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:01:20,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:20,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:20,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:01:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:20,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:20,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:20,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:01:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 08:01:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:20,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:01:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 90 proven. 203 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 08:01:20,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875863527] [2020-10-29 08:01:20,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:20,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:01:20,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365569356] [2020-10-29 08:01:20,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:01:20,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:20,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:01:20,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:01:20,562 INFO L87 Difference]: Start difference. First operand 3494 states and 4227 transitions. Second operand 7 states. [2020-10-29 08:01:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:25,763 INFO L93 Difference]: Finished difference Result 7752 states and 9360 transitions. [2020-10-29 08:01:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:01:25,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 500 [2020-10-29 08:01:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:25,788 INFO L225 Difference]: With dead ends: 7752 [2020-10-29 08:01:25,788 INFO L226 Difference]: Without dead ends: 4264 [2020-10-29 08:01:25,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:01:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2020-10-29 08:01:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4201. [2020-10-29 08:01:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4201 states. [2020-10-29 08:01:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 5016 transitions. [2020-10-29 08:01:25,917 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 5016 transitions. Word has length 500 [2020-10-29 08:01:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:25,918 INFO L481 AbstractCegarLoop]: Abstraction has 4201 states and 5016 transitions. [2020-10-29 08:01:25,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:01:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 5016 transitions. [2020-10-29 08:01:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2020-10-29 08:01:25,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:25,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:25,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:01:25,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1867021468, now seen corresponding path program 1 times [2020-10-29 08:01:25,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:25,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143009049] [2020-10-29 08:01:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:29,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 600 [2020-10-29 08:01:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:01:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3417 [2020-10-29 08:01:29,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:29,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:01:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 08:01:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:29,666 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 08:01:29,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:29,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:29,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:29,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:01:29,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:29,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:29,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:01:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 08:01:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:29,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:01:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:01:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:30,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 08:01:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-29 08:01:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:01:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 254 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 08:01:30,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143009049] [2020-10-29 08:01:30,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:30,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:01:30,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027640478] [2020-10-29 08:01:30,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:01:30,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:30,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:01:30,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:01:30,744 INFO L87 Difference]: Start difference. First operand 4201 states and 5016 transitions. Second operand 8 states. [2020-10-29 08:01:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:37,986 INFO L93 Difference]: Finished difference Result 10505 states and 13301 transitions. [2020-10-29 08:01:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:01:37,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 584 [2020-10-29 08:01:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:38,027 INFO L225 Difference]: With dead ends: 10505 [2020-10-29 08:01:38,027 INFO L226 Difference]: Without dead ends: 6986 [2020-10-29 08:01:38,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:01:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2020-10-29 08:01:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 6958. [2020-10-29 08:01:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6958 states. [2020-10-29 08:01:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 8584 transitions. [2020-10-29 08:01:38,247 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 8584 transitions. Word has length 584 [2020-10-29 08:01:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:38,249 INFO L481 AbstractCegarLoop]: Abstraction has 6958 states and 8584 transitions. [2020-10-29 08:01:38,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:01:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 8584 transitions. [2020-10-29 08:01:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-29 08:01:38,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:38,265 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:38,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:01:38,265 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:38,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash 663576242, now seen corresponding path program 1 times [2020-10-29 08:01:38,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:38,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211643925] [2020-10-29 08:01:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:43,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:43,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 609 [2020-10-29 08:01:43,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:01:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 08:01:43,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:43,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 08:01:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 08:01:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:43,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:01:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:43,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:01:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:43,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:01:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:44,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:44,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:01:44,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-29 08:01:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:44,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:01:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-29 08:01:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:44,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:01:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:44,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-29 08:01:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:44,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:01:44,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:44,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 216 proven. 209 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-29 08:01:44,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211643925] [2020-10-29 08:01:44,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:44,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:01:44,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543796550] [2020-10-29 08:01:44,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:01:44,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:44,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:01:44,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:01:44,792 INFO L87 Difference]: Start difference. First operand 6958 states and 8584 transitions. Second operand 7 states. [2020-10-29 08:01:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:53,784 INFO L93 Difference]: Finished difference Result 15420 states and 19840 transitions. [2020-10-29 08:01:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:01:53,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 591 [2020-10-29 08:01:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:53,839 INFO L225 Difference]: With dead ends: 15420 [2020-10-29 08:01:53,840 INFO L226 Difference]: Without dead ends: 8403 [2020-10-29 08:01:53,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:01:53,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8403 states. [2020-10-29 08:01:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8403 to 8315. [2020-10-29 08:01:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8315 states. [2020-10-29 08:01:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 9660 transitions. [2020-10-29 08:01:54,115 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 9660 transitions. Word has length 591 [2020-10-29 08:01:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:54,116 INFO L481 AbstractCegarLoop]: Abstraction has 8315 states and 9660 transitions. [2020-10-29 08:01:54,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:01:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 9660 transitions. [2020-10-29 08:01:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-29 08:01:54,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:54,135 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:54,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:01:54,136 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1364341966, now seen corresponding path program 1 times [2020-10-29 08:01:54,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:54,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656515381] [2020-10-29 08:01:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:54,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 819 [2020-10-29 08:01:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:01:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 08:01:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:59,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:01:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:01:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-29 08:01:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:59,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:59,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:59,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:59,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:01:59,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:59,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:01:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 08:01:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:00,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:02:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:00,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:00,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:02:00,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-29 08:02:00,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:00,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:02:00,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 08:02:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:01,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:01,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:02:01,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:01,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 08:02:01,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:01,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-29 08:02:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-29 08:02:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:01,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:02:01,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:02:01,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:01,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:02:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 369 proven. 263 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2020-10-29 08:02:02,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656515381] [2020-10-29 08:02:02,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:02,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:02,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011295249] [2020-10-29 08:02:02,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:02,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:02,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:02,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:02,037 INFO L87 Difference]: Start difference. First operand 8315 states and 9660 transitions. Second operand 7 states. [2020-10-29 08:02:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:06,443 INFO L93 Difference]: Finished difference Result 16301 states and 19008 transitions. [2020-10-29 08:02:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:02:06,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 801 [2020-10-29 08:02:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:06,479 INFO L225 Difference]: With dead ends: 16301 [2020-10-29 08:02:06,480 INFO L226 Difference]: Without dead ends: 8668 [2020-10-29 08:02:06,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:02:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2020-10-29 08:02:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8654. [2020-10-29 08:02:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8654 states. [2020-10-29 08:02:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8654 states to 8654 states and 10017 transitions. [2020-10-29 08:02:06,718 INFO L78 Accepts]: Start accepts. Automaton has 8654 states and 10017 transitions. Word has length 801 [2020-10-29 08:02:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:06,719 INFO L481 AbstractCegarLoop]: Abstraction has 8654 states and 10017 transitions. [2020-10-29 08:02:06,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8654 states and 10017 transitions. [2020-10-29 08:02:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-29 08:02:06,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:06,739 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:06,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:02:06,739 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1975577506, now seen corresponding path program 1 times [2020-10-29 08:02:06,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:06,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334449368] [2020-10-29 08:02:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:11,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:11,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-29 08:02:11,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:02:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 08:02:11,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:11,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:02:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 08:02:11,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:12,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:12,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:12,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:02:12,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 08:02:12,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:12,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:02:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:12,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:02:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:12,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:12,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:12,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:02:12,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 08:02:12,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:12,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 08:02:12,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:02:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:12,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:12,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:02:12,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:02:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:12,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 08:02:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:02:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:13,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:13,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:13,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:02:13,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:02:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:13,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-29 08:02:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-29 08:02:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:13,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:02:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:02:13,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:13,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:02:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 321 proven. 356 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2020-10-29 08:02:13,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334449368] [2020-10-29 08:02:13,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:13,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:13,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577347096] [2020-10-29 08:02:13,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:13,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:13,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:13,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:13,880 INFO L87 Difference]: Start difference. First operand 8654 states and 10017 transitions. Second operand 7 states. [2020-10-29 08:02:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:19,777 INFO L93 Difference]: Finished difference Result 18377 states and 21484 transitions. [2020-10-29 08:02:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:02:19,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 835 [2020-10-29 08:02:19,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:19,814 INFO L225 Difference]: With dead ends: 18377 [2020-10-29 08:02:19,815 INFO L226 Difference]: Without dead ends: 10405 [2020-10-29 08:02:19,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:02:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10405 states. [2020-10-29 08:02:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10405 to 10040. [2020-10-29 08:02:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10040 states. [2020-10-29 08:02:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10040 states to 10040 states and 11517 transitions. [2020-10-29 08:02:20,150 INFO L78 Accepts]: Start accepts. Automaton has 10040 states and 11517 transitions. Word has length 835 [2020-10-29 08:02:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:20,151 INFO L481 AbstractCegarLoop]: Abstraction has 10040 states and 11517 transitions. [2020-10-29 08:02:20,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 10040 states and 11517 transitions. [2020-10-29 08:02:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2020-10-29 08:02:20,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:20,178 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:20,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:02:20,178 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:20,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1237588176, now seen corresponding path program 1 times [2020-10-29 08:02:20,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:20,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559260560] [2020-10-29 08:02:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:25,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:25,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 916 [2020-10-29 08:02:25,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:02:25,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-29 08:02:25,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:25,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-29 08:02:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:02:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:25,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:25,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:02:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:25,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 08:02:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:02:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:26,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:26,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:02:26,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:02:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:26,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:26,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:02:26,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:26,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:02:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:26,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-29 08:02:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-29 08:02:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:26,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:26,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:26,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:02:26,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:02:26,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:26,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:02:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1438 backedges. 423 proven. 197 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2020-10-29 08:02:27,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559260560] [2020-10-29 08:02:27,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:27,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:27,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533894206] [2020-10-29 08:02:27,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:27,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:27,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:27,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:27,068 INFO L87 Difference]: Start difference. First operand 10040 states and 11517 transitions. Second operand 7 states. [2020-10-29 08:02:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:32,391 INFO L93 Difference]: Finished difference Result 19750 states and 22774 transitions. [2020-10-29 08:02:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:02:32,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 896 [2020-10-29 08:02:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:32,437 INFO L225 Difference]: With dead ends: 19750 [2020-10-29 08:02:32,437 INFO L226 Difference]: Without dead ends: 10392 [2020-10-29 08:02:32,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:02:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10392 states. [2020-10-29 08:02:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10392 to 10382. [2020-10-29 08:02:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10382 states. [2020-10-29 08:02:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10382 states to 10382 states and 11881 transitions. [2020-10-29 08:02:32,684 INFO L78 Accepts]: Start accepts. Automaton has 10382 states and 11881 transitions. Word has length 896 [2020-10-29 08:02:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:32,686 INFO L481 AbstractCegarLoop]: Abstraction has 10382 states and 11881 transitions. [2020-10-29 08:02:32,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 10382 states and 11881 transitions. [2020-10-29 08:02:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2020-10-29 08:02:32,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:32,711 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:32,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:02:32,712 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:32,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:32,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2113512812, now seen corresponding path program 1 times [2020-10-29 08:02:32,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:32,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307467388] [2020-10-29 08:02:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:37,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:37,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 918 [2020-10-29 08:02:37,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:02:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 08:02:37,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:37,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-29 08:02:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:02:37,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:38,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:38,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:38,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:02:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:02:38,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:38,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:02:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:02:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:02:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:38,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-29 08:02:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:02:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:02:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-29 08:02:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:38,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:38,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:02:38,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 08:02:38,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:38,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-29 08:02:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-29 08:02:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:38,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 423 proven. 197 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2020-10-29 08:02:39,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307467388] [2020-10-29 08:02:39,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:39,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:39,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202684466] [2020-10-29 08:02:39,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:39,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:39,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:39,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:39,397 INFO L87 Difference]: Start difference. First operand 10382 states and 11881 transitions. Second operand 7 states. [2020-10-29 08:02:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:45,738 INFO L93 Difference]: Finished difference Result 23532 states and 27275 transitions. [2020-10-29 08:02:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:02:45,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 898 [2020-10-29 08:02:45,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:45,784 INFO L225 Difference]: With dead ends: 23532 [2020-10-29 08:02:45,784 INFO L226 Difference]: Without dead ends: 13832 [2020-10-29 08:02:45,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:02:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13832 states. [2020-10-29 08:02:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13832 to 13816. [2020-10-29 08:02:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13816 states. [2020-10-29 08:02:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13816 states to 13816 states and 15940 transitions. [2020-10-29 08:02:46,074 INFO L78 Accepts]: Start accepts. Automaton has 13816 states and 15940 transitions. Word has length 898 [2020-10-29 08:02:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:46,075 INFO L481 AbstractCegarLoop]: Abstraction has 13816 states and 15940 transitions. [2020-10-29 08:02:46,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13816 states and 15940 transitions. [2020-10-29 08:02:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2020-10-29 08:02:46,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:46,103 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:46,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:02:46,103 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1940041986, now seen corresponding path program 1 times [2020-10-29 08:02:46,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:46,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107100695] [2020-10-29 08:02:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 965 [2020-10-29 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:02:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-29 08:02:51,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:51,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:02:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-29 08:02:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:02:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:51,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:51,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:51,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:51,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:02:51,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:51,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:51,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:51,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:51,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:02:51,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 08:02:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:51,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:02:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:51,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:02:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:51,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:51,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:02:51,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:02:51,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:51,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:02:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:51,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:51,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:02:51,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:51,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:02:51,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:51,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:51,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:51,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:51,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:51,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 08:02:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:52,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:52,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:02:52,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-29 08:02:52,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:52,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:02:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-29 08:02:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:02:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:02:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:02:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:52,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:02:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 509 proven. 34 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2020-10-29 08:02:53,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107100695] [2020-10-29 08:02:53,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:53,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:02:53,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618272733] [2020-10-29 08:02:53,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:02:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:02:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:02:53,308 INFO L87 Difference]: Start difference. First operand 13816 states and 15940 transitions. Second operand 6 states. [2020-10-29 08:02:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:58,152 INFO L93 Difference]: Finished difference Result 32745 states and 38456 transitions. [2020-10-29 08:02:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:02:58,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 943 [2020-10-29 08:02:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:58,199 INFO L225 Difference]: With dead ends: 32745 [2020-10-29 08:02:58,199 INFO L226 Difference]: Without dead ends: 16431 [2020-10-29 08:02:58,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:02:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16431 states. [2020-10-29 08:02:58,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16431 to 14032. [2020-10-29 08:02:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14032 states. [2020-10-29 08:02:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14032 states to 14032 states and 15222 transitions. [2020-10-29 08:02:58,511 INFO L78 Accepts]: Start accepts. Automaton has 14032 states and 15222 transitions. Word has length 943 [2020-10-29 08:02:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:58,513 INFO L481 AbstractCegarLoop]: Abstraction has 14032 states and 15222 transitions. [2020-10-29 08:02:58,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:02:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 14032 states and 15222 transitions. [2020-10-29 08:02:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2020-10-29 08:02:58,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:58,553 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:58,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:02:58,553 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:58,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2015167056, now seen corresponding path program 1 times [2020-10-29 08:02:58,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:58,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563884889] [2020-10-29 08:02:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1280 [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-29 08:03:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 425 [2020-10-29 08:03:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:04,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:03:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:03:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:03:04,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:03:04,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:03:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 08:03:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:03:04,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 08:03:04,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:03:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-29 08:03:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-29 08:03:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-29 08:03:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:03:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3009 backedges. 263 proven. 7 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2020-10-29 08:03:06,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563884889] [2020-10-29 08:03:06,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:06,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:03:06,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848203864] [2020-10-29 08:03:06,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:03:06,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:06,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:03:06,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:03:06,151 INFO L87 Difference]: Start difference. First operand 14032 states and 15222 transitions. Second operand 6 states. [2020-10-29 08:03:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:10,150 INFO L93 Difference]: Finished difference Result 27384 states and 29753 transitions. [2020-10-29 08:03:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:03:10,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1256 [2020-10-29 08:03:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:10,192 INFO L225 Difference]: With dead ends: 27384 [2020-10-29 08:03:10,192 INFO L226 Difference]: Without dead ends: 14034 [2020-10-29 08:03:10,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14034 states. [2020-10-29 08:03:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14034 to 14032. [2020-10-29 08:03:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14032 states. [2020-10-29 08:03:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14032 states to 14032 states and 15089 transitions. [2020-10-29 08:03:10,464 INFO L78 Accepts]: Start accepts. Automaton has 14032 states and 15089 transitions. Word has length 1256 [2020-10-29 08:03:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:10,466 INFO L481 AbstractCegarLoop]: Abstraction has 14032 states and 15089 transitions. [2020-10-29 08:03:10,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:03:10,466 INFO L276 IsEmpty]: Start isEmpty. Operand 14032 states and 15089 transitions. [2020-10-29 08:03:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1315 [2020-10-29 08:03:10,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:10,504 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:10,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 08:03:10,505 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:10,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1124433668, now seen corresponding path program 1 times [2020-10-29 08:03:10,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:10,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677567538] [2020-10-29 08:03:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:11,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1338 [2020-10-29 08:03:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:03:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 08:03:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:15,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-29 08:03:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:03:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:16,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:03:16,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:03:16,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 08:03:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:03:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:03:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:03:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:03:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:03:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:16,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:03:16,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 08:03:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:03:16,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:03:16,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:16,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:03:16,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-29 08:03:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:03:17,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-29 08:03:17,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:03:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-29 08:03:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1068 proven. 169 refuted. 0 times theorem prover too weak. 2013 trivial. 0 not checked. [2020-10-29 08:03:18,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677567538] [2020-10-29 08:03:18,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:18,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68611904] [2020-10-29 08:03:18,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:18,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:18,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:18,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:18,864 INFO L87 Difference]: Start difference. First operand 14032 states and 15089 transitions. Second operand 7 states. [2020-10-29 08:03:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:23,723 INFO L93 Difference]: Finished difference Result 27390 states and 29497 transitions. [2020-10-29 08:03:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:03:23,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1314 [2020-10-29 08:03:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:23,757 INFO L225 Difference]: With dead ends: 27390 [2020-10-29 08:03:23,757 INFO L226 Difference]: Without dead ends: 14040 [2020-10-29 08:03:23,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:03:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14040 states. [2020-10-29 08:03:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14040 to 14034. [2020-10-29 08:03:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14034 states. [2020-10-29 08:03:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14034 states to 14034 states and 15087 transitions. [2020-10-29 08:03:24,024 INFO L78 Accepts]: Start accepts. Automaton has 14034 states and 15087 transitions. Word has length 1314 [2020-10-29 08:03:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:24,026 INFO L481 AbstractCegarLoop]: Abstraction has 14034 states and 15087 transitions. [2020-10-29 08:03:24,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14034 states and 15087 transitions. [2020-10-29 08:03:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2020-10-29 08:03:24,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:24,069 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:24,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 08:03:24,069 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:24,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1489489718, now seen corresponding path program 1 times [2020-10-29 08:03:24,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:24,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223239320] [2020-10-29 08:03:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1477 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 990 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:03:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:29,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:03:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:03:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:03:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:03:29,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:03:29,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:03:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:29,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:03:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:29,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:03:29,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 08:03:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:29,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:03:29,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:03:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-29 08:03:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-29 08:03:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 978 [2020-10-29 08:03:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:30,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:03:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-29 08:03:30,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:30,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:03:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1251 [2020-10-29 08:03:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:30,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3889 backedges. 1241 proven. 169 refuted. 0 times theorem prover too weak. 2479 trivial. 0 not checked. [2020-10-29 08:03:32,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223239320] [2020-10-29 08:03:32,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:32,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:32,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480245844] [2020-10-29 08:03:32,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:32,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:32,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:32,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:32,105 INFO L87 Difference]: Start difference. First operand 14034 states and 15087 transitions. Second operand 7 states. [2020-10-29 08:03:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:38,194 INFO L93 Difference]: Finished difference Result 27725 states and 29827 transitions. [2020-10-29 08:03:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:03:38,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1451 [2020-10-29 08:03:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:38,234 INFO L225 Difference]: With dead ends: 27725 [2020-10-29 08:03:38,235 INFO L226 Difference]: Without dead ends: 14373 [2020-10-29 08:03:38,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:03:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2020-10-29 08:03:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 14034. [2020-10-29 08:03:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14034 states. [2020-10-29 08:03:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14034 states to 14034 states and 15065 transitions. [2020-10-29 08:03:38,541 INFO L78 Accepts]: Start accepts. Automaton has 14034 states and 15065 transitions. Word has length 1451 [2020-10-29 08:03:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:38,544 INFO L481 AbstractCegarLoop]: Abstraction has 14034 states and 15065 transitions. [2020-10-29 08:03:38,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:38,544 INFO L276 IsEmpty]: Start isEmpty. Operand 14034 states and 15065 transitions. [2020-10-29 08:03:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1485 [2020-10-29 08:03:38,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:38,587 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:38,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 08:03:38,588 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:38,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1232777096, now seen corresponding path program 1 times [2020-10-29 08:03:38,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:38,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98092726] [2020-10-29 08:03:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:39,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:43,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:43,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1514 [2020-10-29 08:03:43,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:03:43,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 08:03:43,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:43,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-29 08:03:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:03:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:44,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:03:44,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:03:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:03:44,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:03:44,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:03:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:03:44,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:03:44,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:03:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:44,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:03:44,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 08:03:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-29 08:03:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:03:44,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:44,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-29 08:03:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:44,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-29 08:03:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:45,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-29 08:03:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:45,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-29 08:03:45,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 08:03:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:45,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-29 08:03:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:03:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:03:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 08:03:45,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:03:45,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:45,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:03:45,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1382 [2020-10-29 08:03:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:45,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:45,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:03:45,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:03:45,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:45,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:03:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4255 backedges. 1148 proven. 318 refuted. 0 times theorem prover too weak. 2789 trivial. 0 not checked. [2020-10-29 08:03:47,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98092726] [2020-10-29 08:03:47,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:47,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:47,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779188893] [2020-10-29 08:03:47,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:47,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:47,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:47,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:47,326 INFO L87 Difference]: Start difference. First operand 14034 states and 15065 transitions. Second operand 7 states.