/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:34:56,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:34:56,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:34:56,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:34:56,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:34:56,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:34:56,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:34:56,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:34:56,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:34:56,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:34:56,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:34:56,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:34:56,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:34:56,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:34:56,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:34:56,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:34:56,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:34:56,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:34:56,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:34:56,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:34:56,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:34:56,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:34:56,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:34:56,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:34:56,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:34:56,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:34:56,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:34:56,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:34:56,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:34:56,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:34:56,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:34:56,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:34:56,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:34:56,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:34:56,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:34:56,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:34:56,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:34:56,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:34:56,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:34:56,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:34:56,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:34:56,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:34:56,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:34:56,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:34:56,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:34:56,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:34:56,312 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:34:56,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:34:56,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:34:56,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:34:56,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:34:56,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:34:56,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:34:56,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:34:56,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:34:56,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:34:56,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:34:56,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:34:56,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:34:56,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:34:56,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:34:56,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:34:56,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:34:56,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:34:56,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:34:56,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:34:56,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:34:56,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:34:56,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:34:56,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:34:56,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:34:56,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:34:56,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:34:56,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:34:56,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:34:56,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:34:56,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:34:56,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-29 08:34:56,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ca23743/2c854af1061e4b5198cae2b0ff036edd/FLAGfe55ad963 [2020-10-29 08:34:57,942 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:34:57,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-29 08:34:57,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ca23743/2c854af1061e4b5198cae2b0ff036edd/FLAGfe55ad963 [2020-10-29 08:34:58,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ca23743/2c854af1061e4b5198cae2b0ff036edd [2020-10-29 08:34:58,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:34:58,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:34:58,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:34:58,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:34:58,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:34:58,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:34:58" (1/1) ... [2020-10-29 08:34:58,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a6a153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:34:58, skipping insertion in model container [2020-10-29 08:34:58,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:34:58" (1/1) ... [2020-10-29 08:34:58,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:34:58,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:34:59,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:34:59,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:35:00,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:35:00,452 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:35:00,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00 WrapperNode [2020-10-29 08:35:00,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:35:00,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:35:00,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:35:00,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:35:00,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... [2020-10-29 08:35:00,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... [2020-10-29 08:35:00,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... [2020-10-29 08:35:00,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... [2020-10-29 08:35:00,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... [2020-10-29 08:35:00,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... [2020-10-29 08:35:00,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... [2020-10-29 08:35:00,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:35:00,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:35:00,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:35:00,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:35:00,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:35:00,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:35:00,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:35:00,870 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:35:00,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:35:00,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:35:00,872 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:35:00,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:35:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:35:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:35:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:35:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:35:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:35:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:35:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:35:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:35:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:35:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:35:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:35:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:35:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:35:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:35:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:35:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:35:05,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:35:05,957 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:35:05,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:35:05 BoogieIcfgContainer [2020-10-29 08:35:05,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:35:05,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:35:05,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:35:05,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:35:05,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:34:58" (1/3) ... [2020-10-29 08:35:05,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f50c902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:35:05, skipping insertion in model container [2020-10-29 08:35:05,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:35:00" (2/3) ... [2020-10-29 08:35:05,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f50c902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:35:05, skipping insertion in model container [2020-10-29 08:35:05,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:35:05" (3/3) ... [2020-10-29 08:35:05,976 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label33.c [2020-10-29 08:35:05,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:35:05,998 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:35:06,014 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:35:06,067 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:35:06,067 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:35:06,067 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:35:06,067 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:35:06,068 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:35:06,068 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:35:06,068 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:35:06,068 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:35:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:35:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 08:35:06,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:06,129 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] [2020-10-29 08:35:06,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash 623498496, now seen corresponding path program 1 times [2020-10-29 08:35:06,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:06,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921759334] [2020-10-29 08:35:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:06,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 08:35:06,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-29 08:35:06,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:06,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:35:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:35:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 08:35:06,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:35:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:07,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:07,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:07,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:07,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:35:07,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:07,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:35:07,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:35:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:35:07,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921759334] [2020-10-29 08:35:07,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:35:07,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:35:07,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132207304] [2020-10-29 08:35:07,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:35:07,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:07,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:35:07,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:35:07,228 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:35:07,431 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 08:35:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:21,285 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-29 08:35:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:35:21,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-29 08:35:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:21,326 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:35:21,327 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:35:21,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:35:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:35:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:35:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:35:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-29 08:35:21,568 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 30 [2020-10-29 08:35:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:21,568 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-29 08:35:21,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:35:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-29 08:35:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 08:35:21,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:21,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:35:21,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:35:21,580 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -474369286, now seen corresponding path program 1 times [2020-10-29 08:35:21,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:21,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943428654] [2020-10-29 08:35:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:22,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:22,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:35:22,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:35:22,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-29 08:35:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:22,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:35:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:35:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:35:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:35:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:22,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:22,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:35:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:22,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:35:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 08:35:22,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:35:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:22,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:35:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 08:35:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:22,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:35:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:35:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:35:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:35:22,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943428654] [2020-10-29 08:35:22,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:35:22,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:35:22,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683276155] [2020-10-29 08:35:23,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:35:23,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:23,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:35:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:35:23,006 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 8 states. [2020-10-29 08:35:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:33,498 INFO L93 Difference]: Finished difference Result 5015 states and 8219 transitions. [2020-10-29 08:35:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:35:33,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-29 08:35:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:33,517 INFO L225 Difference]: With dead ends: 5015 [2020-10-29 08:35:33,517 INFO L226 Difference]: Without dead ends: 2885 [2020-10-29 08:35:33,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:35:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-10-29 08:35:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2870. [2020-10-29 08:35:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2020-10-29 08:35:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4312 transitions. [2020-10-29 08:35:33,616 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4312 transitions. Word has length 101 [2020-10-29 08:35:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:33,617 INFO L481 AbstractCegarLoop]: Abstraction has 2870 states and 4312 transitions. [2020-10-29 08:35:33,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:35:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4312 transitions. [2020-10-29 08:35:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 08:35:33,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:33,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:35:33,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:35:33,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:33,624 INFO L82 PathProgramCache]: Analyzing trace with hash 322341160, now seen corresponding path program 1 times [2020-10-29 08:35:33,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:33,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148567890] [2020-10-29 08:35:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 08:35:35,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:35:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-10-29 08:35:35,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:35:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:35:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 08:35:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:35,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:35,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:35:35,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:35:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:35:35,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:35:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:35,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:36,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:36,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:35:36,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-29 08:35:36,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:36,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:35:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:35:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:35:36,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148567890] [2020-10-29 08:35:36,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:35:36,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:35:36,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672578152] [2020-10-29 08:35:36,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:35:36,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:36,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:35:36,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:35:36,277 INFO L87 Difference]: Start difference. First operand 2870 states and 4312 transitions. Second operand 7 states. [2020-10-29 08:35:48,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:48,106 INFO L93 Difference]: Finished difference Result 8759 states and 13332 transitions. [2020-10-29 08:35:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:35:48,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-29 08:35:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:48,156 INFO L225 Difference]: With dead ends: 8759 [2020-10-29 08:35:48,156 INFO L226 Difference]: Without dead ends: 5895 [2020-10-29 08:35:48,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:35:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2020-10-29 08:35:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5097. [2020-10-29 08:35:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5097 states. [2020-10-29 08:35:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 6840 transitions. [2020-10-29 08:35:48,331 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 6840 transitions. Word has length 180 [2020-10-29 08:35:48,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:48,332 INFO L481 AbstractCegarLoop]: Abstraction has 5097 states and 6840 transitions. [2020-10-29 08:35:48,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:35:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 6840 transitions. [2020-10-29 08:35:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 08:35:48,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:48,337 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:35:48,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:35:48,337 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash 965356250, now seen corresponding path program 1 times [2020-10-29 08:35:48,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:48,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139575426] [2020-10-29 08:35:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:49,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:49,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 08:35:49,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:35:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-29 08:35:49,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:49,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:35:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:35:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:35:49,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:49,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:49,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:49,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:49,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:35:49,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:49,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:49,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:35:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:49,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:35:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:49,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:49,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:35:49,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 08:35:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:49,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:35:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:35:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:35:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 08:35:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:49,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:35:49,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:35:49,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:49,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:35:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 44 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:35:50,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139575426] [2020-10-29 08:35:50,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:35:50,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:35:50,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673715082] [2020-10-29 08:35:50,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:35:50,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:50,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:35:50,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:35:50,023 INFO L87 Difference]: Start difference. First operand 5097 states and 6840 transitions. Second operand 7 states. [2020-10-29 08:36:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:36:00,969 INFO L93 Difference]: Finished difference Result 11232 states and 15515 transitions. [2020-10-29 08:36:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:36:00,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-29 08:36:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:36:01,009 INFO L225 Difference]: With dead ends: 11232 [2020-10-29 08:36:01,009 INFO L226 Difference]: Without dead ends: 6141 [2020-10-29 08:36:01,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:36:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2020-10-29 08:36:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 5853. [2020-10-29 08:36:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5853 states. [2020-10-29 08:36:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 7662 transitions. [2020-10-29 08:36:01,216 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 7662 transitions. Word has length 191 [2020-10-29 08:36:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:36:01,218 INFO L481 AbstractCegarLoop]: Abstraction has 5853 states and 7662 transitions. [2020-10-29 08:36:01,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:36:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 7662 transitions. [2020-10-29 08:36:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 08:36:01,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:36:01,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:36:01,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:36:01,225 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:36:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:36:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash -633390984, now seen corresponding path program 1 times [2020-10-29 08:36:01,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:36:01,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773832771] [2020-10-29 08:36:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:36:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:02,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:04,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:04,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 08:36:04,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:36:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3183 [2020-10-29 08:36:04,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:04,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:36:04,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:36:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:36:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:04,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:04,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:36:04,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:36:04,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:04,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:36:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:36:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:04,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:04,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:36:04,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:36:04,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:04,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:36:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:36:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:36:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:04,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:05,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:36:05,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 08:36:05,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:05,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:36:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:36:05,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773832771] [2020-10-29 08:36:05,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:36:05,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:36:05,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028151820] [2020-10-29 08:36:05,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:36:05,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:36:05,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:36:05,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:36:05,198 INFO L87 Difference]: Start difference. First operand 5853 states and 7662 transitions. Second operand 7 states. [2020-10-29 08:36:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:36:19,068 INFO L93 Difference]: Finished difference Result 16238 states and 22106 transitions. [2020-10-29 08:36:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:36:19,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-29 08:36:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:36:19,117 INFO L225 Difference]: With dead ends: 16238 [2020-10-29 08:36:19,117 INFO L226 Difference]: Without dead ends: 11093 [2020-10-29 08:36:19,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:36:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11093 states. [2020-10-29 08:36:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11093 to 10297. [2020-10-29 08:36:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10297 states. [2020-10-29 08:36:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10297 states to 10297 states and 13108 transitions. [2020-10-29 08:36:19,431 INFO L78 Accepts]: Start accepts. Automaton has 10297 states and 13108 transitions. Word has length 246 [2020-10-29 08:36:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:36:19,431 INFO L481 AbstractCegarLoop]: Abstraction has 10297 states and 13108 transitions. [2020-10-29 08:36:19,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:36:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10297 states and 13108 transitions. [2020-10-29 08:36:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-29 08:36:19,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:36:19,438 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:36:19,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:36:19,439 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:36:19,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:36:19,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2026329620, now seen corresponding path program 1 times [2020-10-29 08:36:19,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:36:19,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003912363] [2020-10-29 08:36:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:36:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:19,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:24,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-29 08:36:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:36:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 08:36:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:24,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-29 08:36:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 08:36:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:36:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:24,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:24,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:36:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:36:24,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:24,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:36:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:24,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:24,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:36:24,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:36:24,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:24,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:36:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 08:36:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 08:36:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:24,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:24,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:36:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 08:36:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:24,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:36:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-29 08:36:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:36:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:36:25,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:25,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:36:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 157 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:36:25,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003912363] [2020-10-29 08:36:25,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:36:25,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:36:25,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131080437] [2020-10-29 08:36:25,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:36:25,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:36:25,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:36:25,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:36:25,148 INFO L87 Difference]: Start difference. First operand 10297 states and 13108 transitions. Second operand 7 states. [2020-10-29 08:36:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:36:41,353 INFO L93 Difference]: Finished difference Result 26512 states and 33473 transitions. [2020-10-29 08:36:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:36:41,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 288 [2020-10-29 08:36:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:36:41,404 INFO L225 Difference]: With dead ends: 26512 [2020-10-29 08:36:41,405 INFO L226 Difference]: Without dead ends: 14007 [2020-10-29 08:36:41,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:36:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2020-10-29 08:36:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 11793. [2020-10-29 08:36:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11793 states. [2020-10-29 08:36:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 13482 transitions. [2020-10-29 08:36:41,731 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 13482 transitions. Word has length 288 [2020-10-29 08:36:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:36:41,732 INFO L481 AbstractCegarLoop]: Abstraction has 11793 states and 13482 transitions. [2020-10-29 08:36:41,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:36:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 13482 transitions. [2020-10-29 08:36:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 08:36:41,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:36:41,740 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:36:41,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:36:41,741 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:36:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:36:41,742 INFO L82 PathProgramCache]: Analyzing trace with hash 103830898, now seen corresponding path program 1 times [2020-10-29 08:36:41,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:36:41,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525779761] [2020-10-29 08:36:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:36:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:46,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-29 08:36:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:36:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 08:36:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:46,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:36:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:36:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:36:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:36:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:46,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:36:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:36:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:46,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:36:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:36:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:36:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:47,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:47,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:47,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:36:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:36:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:36:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:47,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:47,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:36:47,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:47,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:36:47,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:47,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:47,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:47,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:36:47,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:47,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:36:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-29 08:36:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:47,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:47,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:36:47,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:36:47,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:47,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:47,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:47,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:36:47,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:47,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 66 proven. 147 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 08:36:47,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525779761] [2020-10-29 08:36:47,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:36:47,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:36:47,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279030337] [2020-10-29 08:36:47,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:36:47,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:36:47,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:36:47,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:36:47,865 INFO L87 Difference]: Start difference. First operand 11793 states and 13482 transitions. Second operand 7 states. [2020-10-29 08:36:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:36:56,344 INFO L93 Difference]: Finished difference Result 23121 states and 26704 transitions. [2020-10-29 08:36:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:36:56,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-29 08:36:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:36:56,379 INFO L225 Difference]: With dead ends: 23121 [2020-10-29 08:36:56,380 INFO L226 Difference]: Without dead ends: 12036 [2020-10-29 08:36:56,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:36:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2020-10-29 08:36:56,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 11848. [2020-10-29 08:36:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11848 states. [2020-10-29 08:36:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 13587 transitions. [2020-10-29 08:36:56,705 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 13587 transitions. Word has length 309 [2020-10-29 08:36:56,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:36:56,705 INFO L481 AbstractCegarLoop]: Abstraction has 11848 states and 13587 transitions. [2020-10-29 08:36:56,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:36:56,705 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 13587 transitions. [2020-10-29 08:36:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-29 08:36:56,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:36:56,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:36:56,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:36:56,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:36:56,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:36:56,722 INFO L82 PathProgramCache]: Analyzing trace with hash -167192566, now seen corresponding path program 1 times [2020-10-29 08:36:56,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:36:56,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481334024] [2020-10-29 08:36:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:36:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:01,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:01,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-29 08:37:01,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:37:01,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 08:37:01,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:01,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:37:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:37:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:37:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:02,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:37:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:02,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:02,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:37:02,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:02,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:37:02,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:02,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:02,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:37:02,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:02,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:37:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:37:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:02,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:02,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:37:02,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:02,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-29 08:37:02,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:02,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:37:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:37:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:37:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:37:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:03,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:03,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:37:03,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:37:03,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:03,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:37:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:37:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:37:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:37:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:37:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:03,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:03,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:37:03,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:37:03,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:03,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:37:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 08:37:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:03,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:03,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:03,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:37:03,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:03,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:37:03,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:03,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:37:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 66 proven. 151 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 08:37:04,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481334024] [2020-10-29 08:37:04,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:37:04,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:37:04,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097287245] [2020-10-29 08:37:04,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:37:04,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:37:04,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:37:04,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:37:04,548 INFO L87 Difference]: Start difference. First operand 11848 states and 13587 transitions. Second operand 9 states. [2020-10-29 08:37:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:37:15,311 INFO L93 Difference]: Finished difference Result 29753 states and 35183 transitions. [2020-10-29 08:37:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:37:15,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 498 [2020-10-29 08:37:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:37:15,400 INFO L225 Difference]: With dead ends: 29753 [2020-10-29 08:37:15,400 INFO L226 Difference]: Without dead ends: 18613 [2020-10-29 08:37:15,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:37:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18613 states. [2020-10-29 08:37:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18613 to 17829. [2020-10-29 08:37:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17829 states. [2020-10-29 08:37:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17829 states to 17829 states and 20818 transitions. [2020-10-29 08:37:15,807 INFO L78 Accepts]: Start accepts. Automaton has 17829 states and 20818 transitions. Word has length 498 [2020-10-29 08:37:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:37:15,808 INFO L481 AbstractCegarLoop]: Abstraction has 17829 states and 20818 transitions. [2020-10-29 08:37:15,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:37:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 17829 states and 20818 transitions. [2020-10-29 08:37:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2020-10-29 08:37:15,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:37:15,851 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:37:15,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:37:15,852 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:37:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:37:15,853 INFO L82 PathProgramCache]: Analyzing trace with hash 407854148, now seen corresponding path program 1 times [2020-10-29 08:37:15,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:37:15,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091003298] [2020-10-29 08:37:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:37:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:21,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:21,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1067 [2020-10-29 08:37:21,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:37:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 08:37:21,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:21,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:37:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:37:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:37:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:37:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:21,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:21,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:37:21,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:37:21,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:21,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:21,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:37:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:21,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:21,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:37:21,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 08:37:21,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:21,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:21,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:37:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:21,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:21,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:37:21,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:37:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:21,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:37:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:22,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:22,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:37:22,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:37:22,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:22,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:37:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:22,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:37:22,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 08:37:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:22,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:37:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:37:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:22,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:37:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:22,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:22,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:37:22,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:22,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:37:22,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:22,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:22,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:37:22,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:22,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:37:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:22,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:37:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:22,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:22,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:37:22,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 08:37:22,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:22,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:37:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:37:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:37:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-29 08:37:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:22,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:22,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:22,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:37:22,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:37:22,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:22,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 08:37:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 278 proven. 88 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2020-10-29 08:37:23,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091003298] [2020-10-29 08:37:23,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:37:23,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:37:23,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218084391] [2020-10-29 08:37:23,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:37:23,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:37:23,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:37:23,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:37:23,486 INFO L87 Difference]: Start difference. First operand 17829 states and 20818 transitions. Second operand 7 states. [2020-10-29 08:37:33,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:37:33,304 INFO L93 Difference]: Finished difference Result 49248 states and 59139 transitions. [2020-10-29 08:37:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:37:33,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1043 [2020-10-29 08:37:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:37:33,430 INFO L225 Difference]: With dead ends: 49248 [2020-10-29 08:37:33,430 INFO L226 Difference]: Without dead ends: 32837 [2020-10-29 08:37:33,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:37:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32837 states. [2020-10-29 08:37:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32837 to 32109. [2020-10-29 08:37:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32109 states. [2020-10-29 08:37:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32109 states to 32109 states and 37497 transitions. [2020-10-29 08:37:34,222 INFO L78 Accepts]: Start accepts. Automaton has 32109 states and 37497 transitions. Word has length 1043 [2020-10-29 08:37:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:37:34,224 INFO L481 AbstractCegarLoop]: Abstraction has 32109 states and 37497 transitions. [2020-10-29 08:37:34,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:37:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 32109 states and 37497 transitions. [2020-10-29 08:37:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2020-10-29 08:37:34,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:37:34,302 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:37:34,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:37:34,302 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:37:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:37:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash -580847777, now seen corresponding path program 1 times [2020-10-29 08:37:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:37:34,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771371692] [2020-10-29 08:37:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:37:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:39,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:39,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-10-29 08:37:39,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:37:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-29 08:37:39,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:39,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:37:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1112 [2020-10-29 08:37:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 08:37:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:39,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:37:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:39,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:39,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:37:39,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:37:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:39,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:37:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:40,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:40,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:37:40,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:40,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 08:37:40,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:40,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:40,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:40,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:40,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:37:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:37:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:37:40,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:40,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:37:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:40,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:40,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:37:40,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:40,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:37:40,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:40,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:40,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:40,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:40,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:40,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:37:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:40,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:37:40,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 08:37:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:37:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 08:37:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:37:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:40,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-29 08:37:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:37:40,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:37:40,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:40,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-29 08:37:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:37:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 08:37:40,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1098 [2020-10-29 08:37:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:41,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 08:37:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:37:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 08:37:41,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:41,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:37:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 08:37:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1627 backedges. 132 proven. 5 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2020-10-29 08:37:41,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771371692] [2020-10-29 08:37:41,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:37:41,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:37:41,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752626483] [2020-10-29 08:37:41,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:37:41,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:37:41,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:37:41,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:37:41,900 INFO L87 Difference]: Start difference. First operand 32109 states and 37497 transitions. Second operand 5 states. [2020-10-29 08:37:51,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:37:51,255 INFO L93 Difference]: Finished difference Result 79033 states and 94715 transitions. [2020-10-29 08:37:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:37:51,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1287 [2020-10-29 08:37:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:37:51,404 INFO L225 Difference]: With dead ends: 79033 [2020-10-29 08:37:51,404 INFO L226 Difference]: Without dead ends: 48342 [2020-10-29 08:37:51,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:37:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48342 states. [2020-10-29 08:37:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48342 to 48335. [2020-10-29 08:37:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48335 states. [2020-10-29 08:37:52,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48335 states to 48335 states and 56076 transitions. [2020-10-29 08:37:52,414 INFO L78 Accepts]: Start accepts. Automaton has 48335 states and 56076 transitions. Word has length 1287 [2020-10-29 08:37:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:37:52,416 INFO L481 AbstractCegarLoop]: Abstraction has 48335 states and 56076 transitions. [2020-10-29 08:37:52,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:37:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 48335 states and 56076 transitions. [2020-10-29 08:37:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1308 [2020-10-29 08:37:52,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:37:52,447 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:37:52,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:37:52,447 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:37:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:37:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1408359396, now seen corresponding path program 1 times [2020-10-29 08:37:52,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:37:52,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287527396] [2020-10-29 08:37:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:37:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:57,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:57,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1333 [2020-10-29 08:37:57,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:37:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 08:37:57,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:57,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:37:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-29 08:37:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 08:37:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:37:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:37:57,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:37:57,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:57,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:37:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:37:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:37:58,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:58,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:37:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:58,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:37:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:58,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:58,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:37:58,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:37:58,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:58,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:37:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:58,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:58,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:37:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:58,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:58,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:37:58,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:37:58,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:58,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:37:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:58,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:58,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:37:58,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:37:58,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:58,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:37:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:37:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:37:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:58,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:58,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 08:37:58,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:37:58,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:58,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:37:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:37:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 08:37:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:37:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-29 08:37:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:59,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:37:59,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:37:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1668 backedges. 745 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-29 08:38:00,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287527396] [2020-10-29 08:38:00,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:38:00,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:38:00,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723678003] [2020-10-29 08:38:00,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:38:00,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:00,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:38:00,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:38:00,880 INFO L87 Difference]: Start difference. First operand 48335 states and 56076 transitions. Second operand 8 states. [2020-10-29 08:38:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:38:15,530 INFO L93 Difference]: Finished difference Result 105145 states and 122528 transitions. [2020-10-29 08:38:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:38:15,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1307 [2020-10-29 08:38:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:38:15,708 INFO L225 Difference]: With dead ends: 105145 [2020-10-29 08:38:15,708 INFO L226 Difference]: Without dead ends: 57518 [2020-10-29 08:38:15,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:38:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57518 states. [2020-10-29 08:38:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57518 to 56810. [2020-10-29 08:38:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56810 states. [2020-10-29 08:38:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56810 states to 56810 states and 64698 transitions. [2020-10-29 08:38:17,391 INFO L78 Accepts]: Start accepts. Automaton has 56810 states and 64698 transitions. Word has length 1307 [2020-10-29 08:38:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:38:17,393 INFO L481 AbstractCegarLoop]: Abstraction has 56810 states and 64698 transitions. [2020-10-29 08:38:17,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:38:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 56810 states and 64698 transitions. [2020-10-29 08:38:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2020-10-29 08:38:17,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:38:17,453 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:38:17,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:38:17,453 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:38:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:38:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash -442798677, now seen corresponding path program 1 times [2020-10-29 08:38:17,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:38:17,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199748195] [2020-10-29 08:38:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:38:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:22,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:22,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1361 [2020-10-29 08:38:22,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:38:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-29 08:38:22,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:22,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:22,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:38:22,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 983 [2020-10-29 08:38:22,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-29 08:38:22,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:38:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:23,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:23,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:38:23,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:23,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:38:23,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:23,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:38:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:38:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:38:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:23,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:23,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:38:23,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:38:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:23,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:23,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:38:23,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:38:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:23,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:38:23,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:38:23,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:23,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:38:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:38:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:38:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:38:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:38:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:23,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:23,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 08:38:23,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:38:23,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:23,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:38:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:38:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-29 08:38:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:38:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:24,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-29 08:38:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-29 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 08:38:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1163 [2020-10-29 08:38:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:38:24,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 08:38:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:24,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:38:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:38:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:38:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 692 proven. 4 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2020-10-29 08:38:25,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199748195] [2020-10-29 08:38:25,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:38:25,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:38:25,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136797995] [2020-10-29 08:38:25,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:38:25,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:25,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:38:25,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:38:25,328 INFO L87 Difference]: Start difference. First operand 56810 states and 64698 transitions. Second operand 8 states.