/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:32:24,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:32:24,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:32:24,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:32:24,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:32:25,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:32:25,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:32:25,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:32:25,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:32:25,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:32:25,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:32:25,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:32:25,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:32:25,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:32:25,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:32:25,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:32:25,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:32:25,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:32:25,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:32:25,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:32:25,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:32:25,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:32:25,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:32:25,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:32:25,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:32:25,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:32:25,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:32:25,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:32:25,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:32:25,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:32:25,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:32:25,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:32:25,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:32:25,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:32:25,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:32:25,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:32:25,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:32:25,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:32:25,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:32:25,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:32:25,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:32:25,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:32:25,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:32:25,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:32:25,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:32:25,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:32:25,149 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:32:25,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:32:25,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:32:25,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:32:25,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:32:25,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:32:25,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:32:25,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:32:25,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:32:25,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:32:25,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:32:25,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:32:25,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:32:25,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:32:25,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:32:25,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:32:25,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:32:25,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:32:25,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:32:25,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:32:25,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:32:25,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:32:25,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:32:25,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:32:25,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:32:25,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:32:25,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:32:25,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:32:25,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:32:25,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:32:25,645 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:32:25,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2020-10-27 00:32:25,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9451a3b1e/4f0a5dbdca6e4cc3aa7949f87744c8f5/FLAGb7b44a3f2 [2020-10-27 00:32:26,802 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:32:26,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2020-10-27 00:32:26,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9451a3b1e/4f0a5dbdca6e4cc3aa7949f87744c8f5/FLAGb7b44a3f2 [2020-10-27 00:32:27,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9451a3b1e/4f0a5dbdca6e4cc3aa7949f87744c8f5 [2020-10-27 00:32:27,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:32:27,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:32:27,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:32:27,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:32:27,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:32:27,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:27" (1/1) ... [2020-10-27 00:32:27,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748c239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:27, skipping insertion in model container [2020-10-27 00:32:27,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:27" (1/1) ... [2020-10-27 00:32:27,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:32:27,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:32:28,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:32:28,516 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:32:29,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:32:29,127 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:32:29,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29 WrapperNode [2020-10-27 00:32:29,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:32:29,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:32:29,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:32:29,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:32:29,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (1/1) ... [2020-10-27 00:32:29,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (1/1) ... [2020-10-27 00:32:29,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (1/1) ... [2020-10-27 00:32:29,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (1/1) ... [2020-10-27 00:32:29,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (1/1) ... [2020-10-27 00:32:29,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (1/1) ... [2020-10-27 00:32:29,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (1/1) ... [2020-10-27 00:32:29,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:32:29,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:32:29,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:32:29,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:32:29,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (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 [2020-10-27 00:32:29,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:32:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:32:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:32:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:32:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:32:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:32:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:32:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:32:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:32:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:32:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:32:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:32:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:32:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:32:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:32:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:32:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:32:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:32:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:32:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:32:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:32:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:32:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:32:33,925 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:32:33,926 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:32:33,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:33 BoogieIcfgContainer [2020-10-27 00:32:33,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:32:33,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:32:33,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:32:33,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:32:33,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:27" (1/3) ... [2020-10-27 00:32:33,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5816b842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:33, skipping insertion in model container [2020-10-27 00:32:33,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:29" (2/3) ... [2020-10-27 00:32:33,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5816b842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:33, skipping insertion in model container [2020-10-27 00:32:33,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:33" (3/3) ... [2020-10-27 00:32:33,946 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label41.c [2020-10-27 00:32:33,961 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:32:33,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:32:33,985 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:32:34,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:32:34,044 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:32:34,044 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:32:34,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:32:34,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:32:34,045 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:32:34,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:32:34,045 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:32:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:32:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 00:32:34,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:34,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:34,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2113070760, now seen corresponding path program 1 times [2020-10-27 00:32:34,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:34,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606437704] [2020-10-27 00:32:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:34,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:32:34,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-27 00:32:34,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:32:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:32:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:35,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:35,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:35,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:32:35,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:32:35,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606437704] [2020-10-27 00:32:35,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:32:35,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:32:35,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538260318] [2020-10-27 00:32:35,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:32:35,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:35,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:32:35,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:32:35,274 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:32:50,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:50,022 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:32:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:32:50,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-27 00:32:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:50,081 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:32:50,082 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:32:50,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:32:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:32:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:32:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:32:50,293 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 72 [2020-10-27 00:32:50,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:50,294 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:32:50,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:32:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:32:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 00:32:50,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:50,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:50,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:32:50,303 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:50,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1361019052, now seen corresponding path program 1 times [2020-10-27 00:32:50,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:50,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446950540] [2020-10-27 00:32:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:50,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 00:32:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-10-27 00:32:51,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 00:32:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:52,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:52,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:52,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:52,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:32:52,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:52,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:52,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:52,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:32:52,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:52,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:32:52,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 00:32:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:32:52,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446950540] [2020-10-27 00:32:52,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:32:52,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:32:52,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764559443] [2020-10-27 00:32:52,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:52,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:52,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:52,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:52,338 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-27 00:33:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:04,028 INFO L93 Difference]: Finished difference Result 6511 states and 10972 transitions. [2020-10-27 00:33:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:33:04,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-27 00:33:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:04,069 INFO L225 Difference]: With dead ends: 6511 [2020-10-27 00:33:04,069 INFO L226 Difference]: Without dead ends: 4381 [2020-10-27 00:33:04,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-27 00:33:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3598. [2020-10-27 00:33:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-10-27 00:33:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5300 transitions. [2020-10-27 00:33:04,245 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5300 transitions. Word has length 160 [2020-10-27 00:33:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:04,248 INFO L481 AbstractCegarLoop]: Abstraction has 3598 states and 5300 transitions. [2020-10-27 00:33:04,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5300 transitions. [2020-10-27 00:33:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-27 00:33:04,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:04,265 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:04,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:33:04,265 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:04,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1293525626, now seen corresponding path program 1 times [2020-10-27 00:33:04,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:04,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853735242] [2020-10-27 00:33:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-27 00:33:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:33:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4885 [2020-10-27 00:33:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:33:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:33:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:33:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:09,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:33:09,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:33:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:33:09,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:33:09,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:33:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 00:33:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:33:09,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:33:09,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:33:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 128 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:33:09,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853735242] [2020-10-27 00:33:09,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:09,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:09,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212317089] [2020-10-27 00:33:09,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:09,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:09,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:09,618 INFO L87 Difference]: Start difference. First operand 3598 states and 5300 transitions. Second operand 7 states. [2020-10-27 00:33:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:20,387 INFO L93 Difference]: Finished difference Result 8760 states and 12726 transitions. [2020-10-27 00:33:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:20,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-27 00:33:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:20,416 INFO L225 Difference]: With dead ends: 8760 [2020-10-27 00:33:20,416 INFO L226 Difference]: Without dead ends: 5168 [2020-10-27 00:33:20,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:33:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2020-10-27 00:33:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 5095. [2020-10-27 00:33:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5095 states. [2020-10-27 00:33:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 7131 transitions. [2020-10-27 00:33:20,571 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 7131 transitions. Word has length 231 [2020-10-27 00:33:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:20,572 INFO L481 AbstractCegarLoop]: Abstraction has 5095 states and 7131 transitions. [2020-10-27 00:33:20,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 7131 transitions. [2020-10-27 00:33:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-27 00:33:20,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:20,578 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:20,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:33:20,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:20,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:20,579 INFO L82 PathProgramCache]: Analyzing trace with hash 704083756, now seen corresponding path program 1 times [2020-10-27 00:33:20,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:20,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636443284] [2020-10-27 00:33:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:20,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:25,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-27 00:33:25,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:33:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 00:33:25,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:33:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:33:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:33:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:25,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:25,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:25,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:33:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:33:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:33:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:26,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:26,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:33:26,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 00:33:26,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:33:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:33:26,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:33:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:26,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:26,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:33:26,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:33:26,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:33:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:26,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 128 proven. 83 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:33:26,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636443284] [2020-10-27 00:33:26,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:26,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:26,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238332164] [2020-10-27 00:33:26,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:26,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:26,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:26,562 INFO L87 Difference]: Start difference. First operand 5095 states and 7131 transitions. Second operand 7 states. [2020-10-27 00:33:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:37,268 INFO L93 Difference]: Finished difference Result 11175 states and 15955 transitions. [2020-10-27 00:33:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:37,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-27 00:33:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:37,303 INFO L225 Difference]: With dead ends: 11175 [2020-10-27 00:33:37,304 INFO L226 Difference]: Without dead ends: 6086 [2020-10-27 00:33:37,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:33:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2020-10-27 00:33:37,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 5836. [2020-10-27 00:33:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5836 states. [2020-10-27 00:33:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 7927 transitions. [2020-10-27 00:33:37,511 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 7927 transitions. Word has length 282 [2020-10-27 00:33:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:37,512 INFO L481 AbstractCegarLoop]: Abstraction has 5836 states and 7927 transitions. [2020-10-27 00:33:37,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 7927 transitions. [2020-10-27 00:33:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-27 00:33:37,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:37,523 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, 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, 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] [2020-10-27 00:33:37,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:33:37,523 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2010976134, now seen corresponding path program 1 times [2020-10-27 00:33:37,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:37,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497599815] [2020-10-27 00:33:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-27 00:33:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:33:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 00:33:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:33:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:33:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-27 00:33:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:42,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:33:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:43,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:43,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:33:43,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 00:33:43,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:33:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:33:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:43,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:43,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:33:43,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:33:43,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:33:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:43,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-27 00:33:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:43,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:43,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:33:43,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:33:43,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:33:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 261 proven. 151 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 00:33:43,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497599815] [2020-10-27 00:33:43,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:43,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:33:43,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019860942] [2020-10-27 00:33:43,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:33:43,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:43,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:33:43,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:33:43,694 INFO L87 Difference]: Start difference. First operand 5836 states and 7927 transitions. Second operand 8 states. [2020-10-27 00:33:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:56,792 INFO L93 Difference]: Finished difference Result 16393 states and 23268 transitions. [2020-10-27 00:33:56,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:33:56,793 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 417 [2020-10-27 00:33:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:56,852 INFO L225 Difference]: With dead ends: 16393 [2020-10-27 00:33:56,853 INFO L226 Difference]: Without dead ends: 11265 [2020-10-27 00:33:56,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:33:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11265 states. [2020-10-27 00:33:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11265 to 11030. [2020-10-27 00:33:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11030 states. [2020-10-27 00:33:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11030 states to 11030 states and 14103 transitions. [2020-10-27 00:33:57,168 INFO L78 Accepts]: Start accepts. Automaton has 11030 states and 14103 transitions. Word has length 417 [2020-10-27 00:33:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:57,169 INFO L481 AbstractCegarLoop]: Abstraction has 11030 states and 14103 transitions. [2020-10-27 00:33:57,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:33:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 11030 states and 14103 transitions. [2020-10-27 00:33:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-27 00:33:57,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:57,231 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, 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, 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] [2020-10-27 00:33:57,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:33:57,231 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:57,232 INFO L82 PathProgramCache]: Analyzing trace with hash 857757012, now seen corresponding path program 1 times [2020-10-27 00:33:57,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:57,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43262362] [2020-10-27 00:33:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:59,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:02,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:02,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-27 00:34:02,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:34:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:34:02,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:34:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:34:02,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:02,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:02,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:34:02,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:02,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:02,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:02,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:34:02,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:02,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 00:34:02,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:34:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:34:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:03,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:03,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:03,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:34:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-27 00:34:03,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:34:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:34:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:03,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:03,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:34:03,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:34:03,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 00:34:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:03,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 315 proven. 121 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-27 00:34:03,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43262362] [2020-10-27 00:34:03,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:03,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:34:03,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432669798] [2020-10-27 00:34:03,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:34:03,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:03,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:34:03,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:34:03,766 INFO L87 Difference]: Start difference. First operand 11030 states and 14103 transitions. Second operand 6 states. [2020-10-27 00:34:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:12,624 INFO L93 Difference]: Finished difference Result 21610 states and 27853 transitions. [2020-10-27 00:34:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:34:12,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 512 [2020-10-27 00:34:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:12,663 INFO L225 Difference]: With dead ends: 21610 [2020-10-27 00:34:12,664 INFO L226 Difference]: Without dead ends: 11041 [2020-10-27 00:34:12,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:34:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11041 states. [2020-10-27 00:34:12,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11041 to 10946. [2020-10-27 00:34:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10946 states. [2020-10-27 00:34:12,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10946 states to 10946 states and 12682 transitions. [2020-10-27 00:34:12,917 INFO L78 Accepts]: Start accepts. Automaton has 10946 states and 12682 transitions. Word has length 512 [2020-10-27 00:34:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:12,918 INFO L481 AbstractCegarLoop]: Abstraction has 10946 states and 12682 transitions. [2020-10-27 00:34:12,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:34:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10946 states and 12682 transitions. [2020-10-27 00:34:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2020-10-27 00:34:12,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:12,940 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:12,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:34:12,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:12,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:12,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1543879004, now seen corresponding path program 1 times [2020-10-27 00:34:12,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:12,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568219143] [2020-10-27 00:34:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:18,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:18,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-27 00:34:18,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:34:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 00:34:18,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:34:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:34:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:34:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:34:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:18,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:18,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:18,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:34:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:34:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:18,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:19,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:19,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:34:19,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-27 00:34:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:34:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:34:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:19,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:19,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:34:19,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:34:19,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:34:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:34:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:34:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:19,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:19,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:19,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:34:19,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:34:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:19,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-27 00:34:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:19,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:19,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:34:19,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:34:19,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:34:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 192 proven. 200 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 00:34:20,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568219143] [2020-10-27 00:34:20,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:20,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:34:20,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000315821] [2020-10-27 00:34:20,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:34:20,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:20,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:34:20,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:34:20,003 INFO L87 Difference]: Start difference. First operand 10946 states and 12682 transitions. Second operand 8 states. [2020-10-27 00:34:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:32,414 INFO L93 Difference]: Finished difference Result 30129 states and 36214 transitions. [2020-10-27 00:34:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:34:32,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 589 [2020-10-27 00:34:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:32,474 INFO L225 Difference]: With dead ends: 30129 [2020-10-27 00:34:32,474 INFO L226 Difference]: Without dead ends: 19891 [2020-10-27 00:34:32,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:34:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19891 states. [2020-10-27 00:34:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19891 to 18418. [2020-10-27 00:34:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18418 states. [2020-10-27 00:34:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18418 states to 18418 states and 21790 transitions. [2020-10-27 00:34:32,915 INFO L78 Accepts]: Start accepts. Automaton has 18418 states and 21790 transitions. Word has length 589 [2020-10-27 00:34:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:32,916 INFO L481 AbstractCegarLoop]: Abstraction has 18418 states and 21790 transitions. [2020-10-27 00:34:32,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:34:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18418 states and 21790 transitions. [2020-10-27 00:34:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2020-10-27 00:34:32,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:32,938 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:32,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:34:32,938 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:32,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2011611618, now seen corresponding path program 1 times [2020-10-27 00:34:32,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:32,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129235999] [2020-10-27 00:34:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:38,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:38,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1140 [2020-10-27 00:34:38,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:34:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 00:34:38,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:38,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:38,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:34:38,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:34:38,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:38,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:38,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:38,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:38,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:34:38,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:38,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:34:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:34:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:38,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:38,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:34:38,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:38,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:34:38,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:38,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:34:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:38,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:38,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:34:38,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:34:38,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:34:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:39,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:34:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:39,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:39,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:39,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:34:39,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:34:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:34:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:39,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:34:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:39,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:39,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:39,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:39,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:34:39,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:34:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:34:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:39,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:39,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:39,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:34:39,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:39,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:34:39,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:39,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:34:39,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:39,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 510 proven. 87 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-27 00:34:40,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129235999] [2020-10-27 00:34:40,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:40,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:34:40,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878303654] [2020-10-27 00:34:40,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:40,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:40,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:40,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:40,508 INFO L87 Difference]: Start difference. First operand 18418 states and 21790 transitions. Second operand 7 states. [2020-10-27 00:34:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:34:50,627 INFO L93 Difference]: Finished difference Result 38467 states and 45799 transitions. [2020-10-27 00:34:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:34:50,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1116 [2020-10-27 00:34:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:34:50,709 INFO L225 Difference]: With dead ends: 38467 [2020-10-27 00:34:50,709 INFO L226 Difference]: Without dead ends: 21467 [2020-10-27 00:34:50,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:34:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21467 states. [2020-10-27 00:34:51,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21467 to 21356. [2020-10-27 00:34:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21356 states. [2020-10-27 00:34:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21356 states to 21356 states and 25010 transitions. [2020-10-27 00:34:51,251 INFO L78 Accepts]: Start accepts. Automaton has 21356 states and 25010 transitions. Word has length 1116 [2020-10-27 00:34:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:51,253 INFO L481 AbstractCegarLoop]: Abstraction has 21356 states and 25010 transitions. [2020-10-27 00:34:51,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:34:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 21356 states and 25010 transitions. [2020-10-27 00:34:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2020-10-27 00:34:51,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:51,276 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:51,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:34:51,276 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:51,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1788918203, now seen corresponding path program 1 times [2020-10-27 00:34:51,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:51,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876717539] [2020-10-27 00:34:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:55,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1147 [2020-10-27 00:34:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:34:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-27 00:34:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:34:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:34:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:56,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:56,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:56,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:56,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:56,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:34:56,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:56,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:56,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:57,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:57,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:57,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:34:57,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:57,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 00:34:57,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:57,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:57,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:34:57,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:34:57,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:34:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:34:57,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:34:57,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:34:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:34:57,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:57,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:34:57,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:57,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:34:57,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:34:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:34:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:58,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:58,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:34:58,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 00:34:58,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:34:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:58,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:34:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:58,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:58,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:34:58,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:34:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:34:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 510 proven. 87 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-10-27 00:34:59,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876717539] [2020-10-27 00:34:59,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:59,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:34:59,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853939214] [2020-10-27 00:34:59,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:59,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:59,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:59,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:59,081 INFO L87 Difference]: Start difference. First operand 21356 states and 25010 transitions. Second operand 7 states. [2020-10-27 00:35:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:14,660 INFO L93 Difference]: Finished difference Result 50089 states and 60936 transitions. [2020-10-27 00:35:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:35:14,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1123 [2020-10-27 00:35:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:14,750 INFO L225 Difference]: With dead ends: 50089 [2020-10-27 00:35:14,750 INFO L226 Difference]: Without dead ends: 30151 [2020-10-27 00:35:14,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:35:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30151 states. [2020-10-27 00:35:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30151 to 30031. [2020-10-27 00:35:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30031 states. [2020-10-27 00:35:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30031 states to 30031 states and 34897 transitions. [2020-10-27 00:35:15,424 INFO L78 Accepts]: Start accepts. Automaton has 30031 states and 34897 transitions. Word has length 1123 [2020-10-27 00:35:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:15,426 INFO L481 AbstractCegarLoop]: Abstraction has 30031 states and 34897 transitions. [2020-10-27 00:35:15,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 30031 states and 34897 transitions. [2020-10-27 00:35:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2020-10-27 00:35:15,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:15,459 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:15,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:35:15,459 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:15,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:15,460 INFO L82 PathProgramCache]: Analyzing trace with hash 5542376, now seen corresponding path program 1 times [2020-10-27 00:35:15,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:15,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019044006] [2020-10-27 00:35:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:18,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:20,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1235 [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:35:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:20,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:20,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:20,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:35:20,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:21,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:21,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:21,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:21,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:35:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:21,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:21,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:35:21,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:35:21,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:35:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:21,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:35:21,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:21,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:21,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:35:21,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:35:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:35:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:21,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:35:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:35:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:22,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:35:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1057 [2020-10-27 00:35:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 518 proven. 174 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2020-10-27 00:35:22,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019044006] [2020-10-27 00:35:22,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:35:22,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:35:22,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765398285] [2020-10-27 00:35:22,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:22,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:22,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:22,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:22,931 INFO L87 Difference]: Start difference. First operand 30031 states and 34897 transitions. Second operand 7 states. [2020-10-27 00:35:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:34,491 INFO L93 Difference]: Finished difference Result 66529 states and 79438 transitions. [2020-10-27 00:35:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:35:34,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1209 [2020-10-27 00:35:34,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:34,603 INFO L225 Difference]: With dead ends: 66529 [2020-10-27 00:35:34,603 INFO L226 Difference]: Without dead ends: 37916 [2020-10-27 00:35:34,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:35:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37916 states. [2020-10-27 00:35:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37916 to 37839. [2020-10-27 00:35:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37839 states. [2020-10-27 00:35:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37839 states to 37839 states and 44285 transitions. [2020-10-27 00:35:35,416 INFO L78 Accepts]: Start accepts. Automaton has 37839 states and 44285 transitions. Word has length 1209 [2020-10-27 00:35:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:35,417 INFO L481 AbstractCegarLoop]: Abstraction has 37839 states and 44285 transitions. [2020-10-27 00:35:35,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 37839 states and 44285 transitions. [2020-10-27 00:35:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1299 [2020-10-27 00:35:35,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:35,449 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:35,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:35:35,450 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:35,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:35,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1885847814, now seen corresponding path program 1 times [2020-10-27 00:35:35,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:35,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377637706] [2020-10-27 00:35:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:41,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:41,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1324 [2020-10-27 00:35:41,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:35:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-27 00:35:41,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:35:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:35:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:41,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:41,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:41,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:41,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:35:41,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:41,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:41,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:41,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:35:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:41,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:41,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:35:41,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:35:41,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:35:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:35:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:35:42,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:35:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:35:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:42,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:42,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:35:42,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:35:42,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:35:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:42,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:35:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:42,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:35:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:42,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:35:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:42,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:42,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 00:35:42,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:35:42,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:35:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-27 00:35:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:35:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 699 proven. 121 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2020-10-27 00:35:43,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377637706] [2020-10-27 00:35:43,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:35:43,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:35:43,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184858475] [2020-10-27 00:35:43,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:43,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:43,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:43,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:43,712 INFO L87 Difference]: Start difference. First operand 37839 states and 44285 transitions. Second operand 7 states. [2020-10-27 00:35:54,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:54,562 INFO L93 Difference]: Finished difference Result 77162 states and 90581 transitions. [2020-10-27 00:35:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:35:54,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1298 [2020-10-27 00:35:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:54,681 INFO L225 Difference]: With dead ends: 77162 [2020-10-27 00:35:54,681 INFO L226 Difference]: Without dead ends: 40741 [2020-10-27 00:35:54,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:35:54,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40741 states. [2020-10-27 00:35:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40741 to 40697. [2020-10-27 00:35:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40697 states. [2020-10-27 00:35:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40697 states to 40697 states and 47473 transitions. [2020-10-27 00:35:55,671 INFO L78 Accepts]: Start accepts. Automaton has 40697 states and 47473 transitions. Word has length 1298 [2020-10-27 00:35:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:55,673 INFO L481 AbstractCegarLoop]: Abstraction has 40697 states and 47473 transitions. [2020-10-27 00:35:55,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:35:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 40697 states and 47473 transitions. [2020-10-27 00:35:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1353 [2020-10-27 00:35:55,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:55,706 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:55,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:35:55,707 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash 91203842, now seen corresponding path program 1 times [2020-10-27 00:35:55,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:55,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212402342] [2020-10-27 00:35:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:00,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1380 [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:36:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0