/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem06_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 11:04:22,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 11:04:22,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 11:04:22,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 11:04:22,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 11:04:22,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 11:04:22,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 11:04:22,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 11:04:22,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 11:04:22,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 11:04:22,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 11:04:22,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 11:04:22,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 11:04:22,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 11:04:22,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 11:04:22,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 11:04:22,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 11:04:22,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 11:04:22,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 11:04:22,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 11:04:22,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 11:04:22,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 11:04:22,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 11:04:22,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 11:04:22,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 11:04:22,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 11:04:22,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 11:04:22,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 11:04:22,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 11:04:22,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 11:04:22,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 11:04:22,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 11:04:22,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 11:04:22,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 11:04:22,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 11:04:22,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 11:04:22,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 11:04:22,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 11:04:22,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 11:04:22,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 11:04:22,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 11:04:22,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 11:04:22,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 11:04:22,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 11:04:22,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 11:04:22,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 11:04:22,331 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 11:04:22,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 11:04:22,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 11:04:22,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 11:04:22,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 11:04:22,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 11:04:22,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 11:04:22,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 11:04:22,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 11:04:22,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 11:04:22,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 11:04:22,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 11:04:22,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 11:04:22,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 11:04:22,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 11:04:22,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 11:04:22,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 11:04:22,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 11:04:22,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 11:04:22,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 11:04:22,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 11:04:22,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 11:04:22,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 11:04:22,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 11:04:22,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 11:04:22,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 11:04:22,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 11:04:22,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 11:04:22,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 11:04:22,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 11:04:22,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 11:04:22,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-28 11:04:22,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43923c33d/9b9fb57c8ed44c598dc90d8c6dcb8bf7/FLAG48da22ee0 [2020-10-28 11:04:24,144 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 11:04:24,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-28 11:04:24,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43923c33d/9b9fb57c8ed44c598dc90d8c6dcb8bf7/FLAG48da22ee0 [2020-10-28 11:04:24,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43923c33d/9b9fb57c8ed44c598dc90d8c6dcb8bf7 [2020-10-28 11:04:24,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 11:04:24,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 11:04:24,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 11:04:24,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 11:04:24,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 11:04:24,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:24" (1/1) ... [2020-10-28 11:04:24,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1732d00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:24, skipping insertion in model container [2020-10-28 11:04:24,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:24" (1/1) ... [2020-10-28 11:04:24,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 11:04:24,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 11:04:26,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 11:04:26,810 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 11:04:28,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 11:04:28,359 INFO L208 MainTranslator]: Completed translation [2020-10-28 11:04:28,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28 WrapperNode [2020-10-28 11:04:28,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 11:04:28,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 11:04:28,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 11:04:28,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 11:04:28,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... [2020-10-28 11:04:28,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... [2020-10-28 11:04:28,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... [2020-10-28 11:04:28,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... [2020-10-28 11:04:28,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... [2020-10-28 11:04:28,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... [2020-10-28 11:04:28,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... [2020-10-28 11:04:28,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 11:04:28,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 11:04:28,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 11:04:28,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 11:04:28,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 11:04:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 11:04:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 11:04:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 11:04:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 11:04:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 11:04:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 11:04:28,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 11:04:28,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 11:04:28,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 11:04:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 11:04:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 11:04:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 11:04:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 11:04:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 11:04:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 11:04:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 11:04:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 11:04:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 11:04:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 11:04:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 11:04:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 11:04:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 11:04:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 11:04:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 11:04:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 11:04:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 11:04:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 11:04:37,105 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 11:04:37,106 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 11:04:37,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:37 BoogieIcfgContainer [2020-10-28 11:04:37,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 11:04:37,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 11:04:37,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 11:04:37,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 11:04:37,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:04:24" (1/3) ... [2020-10-28 11:04:37,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369846ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:04:37, skipping insertion in model container [2020-10-28 11:04:37,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:28" (2/3) ... [2020-10-28 11:04:37,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369846ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:04:37, skipping insertion in model container [2020-10-28 11:04:37,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:37" (3/3) ... [2020-10-28 11:04:37,119 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label38.c [2020-10-28 11:04:37,131 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 11:04:37,137 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 11:04:37,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 11:04:37,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 11:04:37,186 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 11:04:37,186 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 11:04:37,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 11:04:37,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 11:04:37,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 11:04:37,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 11:04:37,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 11:04:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-28 11:04:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-28 11:04:37,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:04:37,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:04:37,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:04:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:04:37,301 INFO L82 PathProgramCache]: Analyzing trace with hash 194812492, now seen corresponding path program 1 times [2020-10-28 11:04:37,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:04:37,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414420970] [2020-10-28 11:04:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:04:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:04:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:04:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:04:43,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:04:43,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-28 11:04:43,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:04:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5322 [2020-10-28 11:04:43,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:04:43,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:04:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 11:04:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:04:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 962 [2020-10-28 11:04:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 11:04:45,451 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:04:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:04:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:04:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:04:45,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:04:45,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:04:45,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:04:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 11:04:45,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:04:45,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:04:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:04:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:04:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:04:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:04:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 11:04:46,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414420970] [2020-10-28 11:04:46,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 11:04:46,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 11:04:46,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109271412] [2020-10-28 11:04:46,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 11:04:46,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:04:46,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 11:04:46,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 11:04:46,840 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-28 11:04:47,155 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:05:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:05:04,762 INFO L93 Difference]: Finished difference Result 3770 states and 7012 transitions. [2020-10-28 11:05:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 11:05:04,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 953 [2020-10-28 11:05:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:05:04,819 INFO L225 Difference]: With dead ends: 3770 [2020-10-28 11:05:04,819 INFO L226 Difference]: Without dead ends: 2387 [2020-10-28 11:05:04,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 11:05:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-28 11:05:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-28 11:05:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-28 11:05:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3972 transitions. [2020-10-28 11:05:05,029 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3972 transitions. Word has length 953 [2020-10-28 11:05:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:05:05,033 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3972 transitions. [2020-10-28 11:05:05,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 11:05:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3972 transitions. [2020-10-28 11:05:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-28 11:05:05,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:05:05,075 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:05:05,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 11:05:05,075 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:05:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:05:05,076 INFO L82 PathProgramCache]: Analyzing trace with hash 327711411, now seen corresponding path program 1 times [2020-10-28 11:05:05,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:05:05,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997643532] [2020-10-28 11:05:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:05:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:05:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:10,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:05:10,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 985 [2020-10-28 11:05:10,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:05:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-28 11:05:10,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:05:10,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:05:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:05:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:05:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 11:05:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:05:10,941 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:05:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:05:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:05:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:05:10,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:05:10,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:05:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 11:05:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:05:10,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:05:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:05:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:05:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:05:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:05:11,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:05:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:05:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:11,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:05:11,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:05:11,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:05:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 11:05:11,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:05:11,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:05:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:05:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:05:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 11:05:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:05:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 11:05:11,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997643532] [2020-10-28 11:05:11,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 11:05:11,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 11:05:11,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362139608] [2020-10-28 11:05:11,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:05:11,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:05:11,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:05:11,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:05:11,810 INFO L87 Difference]: Start difference. First operand 2374 states and 3972 transitions. Second operand 7 states. [2020-10-28 11:05:12,101 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 11:05:13,259 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 11:05:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:05:32,166 INFO L93 Difference]: Finished difference Result 5921 states and 9748 transitions. [2020-10-28 11:05:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 11:05:32,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 965 [2020-10-28 11:05:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:05:32,194 INFO L225 Difference]: With dead ends: 5921 [2020-10-28 11:05:32,194 INFO L226 Difference]: Without dead ends: 3553 [2020-10-28 11:05:32,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 11:05:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2020-10-28 11:05:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3484. [2020-10-28 11:05:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3484 states. [2020-10-28 11:05:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5476 transitions. [2020-10-28 11:05:32,343 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5476 transitions. Word has length 965 [2020-10-28 11:05:32,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:05:32,344 INFO L481 AbstractCegarLoop]: Abstraction has 3484 states and 5476 transitions. [2020-10-28 11:05:32,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:05:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5476 transitions. [2020-10-28 11:05:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2020-10-28 11:05:32,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:05:32,362 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:05:32,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 11:05:32,363 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:05:32,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:05:32,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1670568571, now seen corresponding path program 1 times [2020-10-28 11:05:32,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:05:32,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436512307] [2020-10-28 11:05:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:05:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:05:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:34,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:37,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:05:37,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-28 11:05:37,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:05:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 11:05:37,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:05:37,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:05:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:05:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:05:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 11:05:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:05:38,001 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:05:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:05:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:05:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:38,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:05:38,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:05:38,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:05:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 11:05:38,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:05:38,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:05:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:05:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:05:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:05:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:05:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:05:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:05:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:05:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:05:38,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 11:05:38,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:05:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 11:05:38,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:05:38,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:05:38,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:05:38,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:05:38,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 11:05:38,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:05:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 11:05:38,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436512307] [2020-10-28 11:05:38,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 11:05:38,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 11:05:38,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686406198] [2020-10-28 11:05:38,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:05:38,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:05:38,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:05:38,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:05:38,817 INFO L87 Difference]: Start difference. First operand 3484 states and 5476 transitions. Second operand 7 states. [2020-10-28 11:05:39,079 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:05:39,595 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:06:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:06:02,107 INFO L93 Difference]: Finished difference Result 10606 states and 17363 transitions. [2020-10-28 11:06:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:06:02,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 969 [2020-10-28 11:06:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:06:02,164 INFO L225 Difference]: With dead ends: 10606 [2020-10-28 11:06:02,164 INFO L226 Difference]: Without dead ends: 7128 [2020-10-28 11:06:02,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:06:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7128 states. [2020-10-28 11:06:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7128 to 6871. [2020-10-28 11:06:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6871 states. [2020-10-28 11:06:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6871 states to 6871 states and 10108 transitions. [2020-10-28 11:06:02,587 INFO L78 Accepts]: Start accepts. Automaton has 6871 states and 10108 transitions. Word has length 969 [2020-10-28 11:06:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:06:02,590 INFO L481 AbstractCegarLoop]: Abstraction has 6871 states and 10108 transitions. [2020-10-28 11:06:02,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:06:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6871 states and 10108 transitions. [2020-10-28 11:06:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-28 11:06:02,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:06:02,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:06:02,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 11:06:02,623 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:06:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:06:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1448002607, now seen corresponding path program 1 times [2020-10-28 11:06:02,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:06:02,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170669513] [2020-10-28 11:06:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:06:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:07,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:07,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1007 [2020-10-28 11:06:07,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:06:07,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 11:06:07,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:07,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:06:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:06:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 11:06:07,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:06:08,235 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:06:08,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:06:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:08,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:06:08,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:06:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 11:06:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:08,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:06:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:06:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:06:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:06:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:06:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:08,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 11:06:08,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:06:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 11:06:08,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:08,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:06:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:06:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 11:06:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:06:08,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 11:06:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:08,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:08,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:08,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:06:08,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:06:08,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 11:06:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:08,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:06:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 11:06:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:06:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:06:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 11:06:09,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170669513] [2020-10-28 11:06:09,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:06:09,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:06:09,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458383105] [2020-10-28 11:06:09,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:06:09,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:06:09,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:06:09,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:06:09,013 INFO L87 Difference]: Start difference. First operand 6871 states and 10108 transitions. Second operand 7 states. [2020-10-28 11:06:09,263 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:06:10,994 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:06:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:06:28,289 INFO L93 Difference]: Finished difference Result 21507 states and 33146 transitions. [2020-10-28 11:06:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:06:28,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 985 [2020-10-28 11:06:28,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:06:28,378 INFO L225 Difference]: With dead ends: 21507 [2020-10-28 11:06:28,378 INFO L226 Difference]: Without dead ends: 14642 [2020-10-28 11:06:28,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:06:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14642 states. [2020-10-28 11:06:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14642 to 14129. [2020-10-28 11:06:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14129 states. [2020-10-28 11:06:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14129 states to 14129 states and 20169 transitions. [2020-10-28 11:06:28,896 INFO L78 Accepts]: Start accepts. Automaton has 14129 states and 20169 transitions. Word has length 985 [2020-10-28 11:06:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:06:28,896 INFO L481 AbstractCegarLoop]: Abstraction has 14129 states and 20169 transitions. [2020-10-28 11:06:28,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:06:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 14129 states and 20169 transitions. [2020-10-28 11:06:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2020-10-28 11:06:28,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:06:28,956 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:06:28,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 11:06:28,956 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:06:28,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:06:28,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1306587044, now seen corresponding path program 1 times [2020-10-28 11:06:28,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:06:28,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555848507] [2020-10-28 11:06:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:06:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:34,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-28 11:06:34,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 11:06:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 11:06:34,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:34,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:06:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:06:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 11:06:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:06:34,640 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:06:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:06:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:06:34,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:06:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 11:06:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:34,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:06:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:06:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:06:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:06:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:06:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:34,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:34,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 11:06:34,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:06:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 11:06:34,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:34,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:06:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:06:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 11:06:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:06:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 11:06:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:35,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:06:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 11:06:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:06:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 11:06:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:06:35,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:06:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:06:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 11:06:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:06:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:06:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 11:06:36,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555848507] [2020-10-28 11:06:36,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:06:36,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:06:36,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773888845] [2020-10-28 11:06:36,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:06:36,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:06:36,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:06:36,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:06:36,365 INFO L87 Difference]: Start difference. First operand 14129 states and 20169 transitions. Second operand 7 states. [2020-10-28 11:06:36,609 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:06:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:06:57,691 INFO L93 Difference]: Finished difference Result 43353 states and 63560 transitions. [2020-10-28 11:06:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 11:06:57,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1023 [2020-10-28 11:06:57,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:06:57,811 INFO L225 Difference]: With dead ends: 43353 [2020-10-28 11:06:57,811 INFO L226 Difference]: Without dead ends: 29230 [2020-10-28 11:06:57,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 11:06:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29230 states. [2020-10-28 11:06:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29230 to 29019. [2020-10-28 11:06:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29019 states. [2020-10-28 11:06:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29019 states to 29019 states and 42153 transitions. [2020-10-28 11:06:58,718 INFO L78 Accepts]: Start accepts. Automaton has 29019 states and 42153 transitions. Word has length 1023 [2020-10-28 11:06:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:06:58,719 INFO L481 AbstractCegarLoop]: Abstraction has 29019 states and 42153 transitions. [2020-10-28 11:06:58,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:06:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 29019 states and 42153 transitions. [2020-10-28 11:06:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-28 11:06:58,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:06:58,835 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:06:58,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 11:06:58,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:06:58,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:06:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1304916723, now seen corresponding path program 1 times [2020-10-28 11:06:58,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:06:58,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920409228] [2020-10-28 11:06:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:06:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:06:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:06:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:04,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-28 11:07:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 11:07:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-28 11:07:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:04,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:07:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 11:07:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 11:07:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:04,570 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:07:04,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:07:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:04,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:04,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:07:04,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 11:07:04,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:04,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:07:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:07:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:07:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:07:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:04,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:04,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:04,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 11:07:04,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 11:07:04,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:04,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:07:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:07:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:07:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 11:07:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:04,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:04,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 11:07:04,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 11:07:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:04,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:07:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:07:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 11:07:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 11:07:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:04,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:04,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 11:07:04,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 11:07:04,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:04,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:07:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:07:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 11:07:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 11:07:05,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920409228] [2020-10-28 11:07:05,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:07:05,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:07:05,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747092984] [2020-10-28 11:07:05,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:07:05,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:07:05,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:07:05,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:07:05,481 INFO L87 Difference]: Start difference. First operand 29019 states and 42153 transitions. Second operand 7 states. [2020-10-28 11:07:05,987 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:07:07,223 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:07:28,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:07:28,817 INFO L93 Difference]: Finished difference Result 74183 states and 114499 transitions. [2020-10-28 11:07:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:07:28,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1030 [2020-10-28 11:07:28,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:07:29,127 INFO L225 Difference]: With dead ends: 74183 [2020-10-28 11:07:29,127 INFO L226 Difference]: Without dead ends: 45170 [2020-10-28 11:07:29,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:07:29,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45170 states. [2020-10-28 11:07:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45170 to 44396. [2020-10-28 11:07:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44396 states. [2020-10-28 11:07:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44396 states to 44396 states and 64588 transitions. [2020-10-28 11:07:30,331 INFO L78 Accepts]: Start accepts. Automaton has 44396 states and 64588 transitions. Word has length 1030 [2020-10-28 11:07:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:07:30,331 INFO L481 AbstractCegarLoop]: Abstraction has 44396 states and 64588 transitions. [2020-10-28 11:07:30,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:07:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 44396 states and 64588 transitions. [2020-10-28 11:07:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-28 11:07:30,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:07:30,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:07:30,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 11:07:30,473 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:07:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:07:30,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1594723090, now seen corresponding path program 1 times [2020-10-28 11:07:30,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:07:30,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662863308] [2020-10-28 11:07:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:07:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:30,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:35,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:35,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-28 11:07:35,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 11:07:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-28 11:07:35,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:35,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:07:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 11:07:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 11:07:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:36,163 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:07:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:07:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:36,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:36,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:07:36,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 11:07:36,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:36,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:07:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:07:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:07:36,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:07:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:36,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:36,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 11:07:36,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 11:07:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:36,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:07:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:07:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:07:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:36,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 11:07:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:36,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:07:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 11:07:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:36,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 11:07:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:07:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:07:36,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:07:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 11:07:36,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:07:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 11:07:36,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:07:36,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:07:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:07:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:07:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 11:07:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:07:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 11:07:37,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662863308] [2020-10-28 11:07:37,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:07:37,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:07:37,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439731021] [2020-10-28 11:07:37,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:07:37,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:07:37,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:07:37,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:07:37,115 INFO L87 Difference]: Start difference. First operand 44396 states and 64588 transitions. Second operand 7 states. [2020-10-28 11:07:37,380 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 11:07:39,566 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159