/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:02:45,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:02:45,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:02:45,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:02:45,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:02:45,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:02:45,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:02:45,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:02:45,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:02:45,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:02:45,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:02:45,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:02:45,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:02:45,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:02:45,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:02:45,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:02:45,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:02:45,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:02:45,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:02:45,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:02:45,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:02:45,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:02:45,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:02:45,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:02:45,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:02:45,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:02:45,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:02:45,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:02:45,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:02:45,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:02:45,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:02:45,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:02:45,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:02:45,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:02:45,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:02:45,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:02:45,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:02:45,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:02:45,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:02:45,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:02:45,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:02:45,165 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 [2020-10-26 21:02:45,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:02:45,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:02:45,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:02:45,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:02:45,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:02:45,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:02:45,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:02:45,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:02:45,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:02:45,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:02:45,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:02:45,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:02:45,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:02:45,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:02:45,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:02:45,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:02:45,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:02:45,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:02:45,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:02:45,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:02:45,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:02:45,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:02:45,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:02:45,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:02:45,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:02:45,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:02:45,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:02:45,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:02:45,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:02:45,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:02:45,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:02:45,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:02:45,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:02:45,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:02:45,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:02:45,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label33.c [2020-10-26 21:02:45,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de7aeb3b0/d23d25df34ab406e9a0d862dcae4dd28/FLAGd933002cf [2020-10-26 21:02:46,805 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:02:46,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label33.c [2020-10-26 21:02:46,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de7aeb3b0/d23d25df34ab406e9a0d862dcae4dd28/FLAGd933002cf [2020-10-26 21:02:47,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de7aeb3b0/d23d25df34ab406e9a0d862dcae4dd28 [2020-10-26 21:02:47,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:02:47,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:02:47,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:02:47,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:02:47,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:02:47,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:02:47" (1/1) ... [2020-10-26 21:02:47,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88d1a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:47, skipping insertion in model container [2020-10-26 21:02:47,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:02:47" (1/1) ... [2020-10-26 21:02:47,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:02:47,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:02:48,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:02:48,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:02:49,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:02:49,663 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:02:49,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49 WrapperNode [2020-10-26 21:02:49,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:02:49,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:02:49,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:02:49,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:02:49,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (1/1) ... [2020-10-26 21:02:49,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (1/1) ... [2020-10-26 21:02:49,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (1/1) ... [2020-10-26 21:02:49,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (1/1) ... [2020-10-26 21:02:49,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (1/1) ... [2020-10-26 21:02:49,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (1/1) ... [2020-10-26 21:02:49,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (1/1) ... [2020-10-26 21:02:50,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:02:50,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:02:50,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:02:50,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:02:50,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (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 [2020-10-26 21:02:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:02:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:02:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:02:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:02:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:02:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:02:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:02:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:02:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:02:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:02:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:02:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:02:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:02:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:02:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:02:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:02:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:02:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:02:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:02:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:02:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:02:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:02:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:02:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:02:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:02:55,224 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:02:55,225 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:02:55,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:02:55 BoogieIcfgContainer [2020-10-26 21:02:55,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:02:55,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:02:55,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:02:55,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:02:55,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:02:47" (1/3) ... [2020-10-26 21:02:55,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79026ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:02:55, skipping insertion in model container [2020-10-26 21:02:55,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:49" (2/3) ... [2020-10-26 21:02:55,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79026ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:02:55, skipping insertion in model container [2020-10-26 21:02:55,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:02:55" (3/3) ... [2020-10-26 21:02:55,237 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label33.c [2020-10-26 21:02:55,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:02:55,258 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:02:55,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:02:55,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:02:55,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:02:55,309 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:02:55,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:02:55,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:02:55,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:02:55,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:02:55,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:02:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:02:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-26 21:02:55,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:02:55,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:02:55,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:02:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:02:55,405 INFO L82 PathProgramCache]: Analyzing trace with hash 599316144, now seen corresponding path program 1 times [2020-10-26 21:02:55,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:02:55,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470212808] [2020-10-26 21:02:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:02:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:01,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-26 21:03:01,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:03:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-26 21:03:01,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:03:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 832 [2020-10-26 21:03:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 21:03:02,328 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:03:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:02,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:02,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:02,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:02,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:03:02,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:03:03,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470212808] [2020-10-26 21:03:03,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:03:03,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:03:03,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638835951] [2020-10-26 21:03:03,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:03:03,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:03,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:03:03,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:03:03,818 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:03:04,006 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:03:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:14,887 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-26 21:03:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:03:14,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 825 [2020-10-26 21:03:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:14,939 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:03:14,939 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:03:14,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:03:14,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:03:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-26 21:03:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-26 21:03:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-26 21:03:15,163 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 825 [2020-10-26 21:03:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:15,166 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-26 21:03:15,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:03:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-26 21:03:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2020-10-26 21:03:15,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:15,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:03:15,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:03:15,197 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:15,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:15,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2100208910, now seen corresponding path program 1 times [2020-10-26 21:03:15,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:15,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962331275] [2020-10-26 21:03:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:20,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 851 [2020-10-26 21:03:20,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:03:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-26 21:03:20,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:03:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:03:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:03:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:20,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:20,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:20,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:20,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:03:20,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 21:03:20,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:20,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:20,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:03:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:03:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:03:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:03:21,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962331275] [2020-10-26 21:03:21,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:03:21,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:03:21,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632635598] [2020-10-26 21:03:21,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:03:21,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:03:21,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:03:21,489 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 7 states. [2020-10-26 21:03:21,637 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:03:23,810 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 21:03:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:33,906 INFO L93 Difference]: Finished difference Result 4306 states and 7617 transitions. [2020-10-26 21:03:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:03:33,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 833 [2020-10-26 21:03:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:33,927 INFO L225 Difference]: With dead ends: 4306 [2020-10-26 21:03:33,927 INFO L226 Difference]: Without dead ends: 2622 [2020-10-26 21:03:33,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:03:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2020-10-26 21:03:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2577. [2020-10-26 21:03:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2577 states. [2020-10-26 21:03:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4143 transitions. [2020-10-26 21:03:34,024 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4143 transitions. Word has length 833 [2020-10-26 21:03:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:34,024 INFO L481 AbstractCegarLoop]: Abstraction has 2577 states and 4143 transitions. [2020-10-26 21:03:34,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:03:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4143 transitions. [2020-10-26 21:03:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-26 21:03:34,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:34,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:03:34,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:03:34,059 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:34,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:34,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1660358066, now seen corresponding path program 1 times [2020-10-26 21:03:34,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:34,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590337280] [2020-10-26 21:03:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:39,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 853 [2020-10-26 21:03:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:03:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-26 21:03:39,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:03:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:03:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:39,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:39,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:39,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:03:39,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:39,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 21:03:39,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:03:39,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 21:03:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:03:39,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590337280] [2020-10-26 21:03:39,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:03:39,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:03:39,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799827186] [2020-10-26 21:03:39,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:03:39,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:39,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:03:39,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:03:39,932 INFO L87 Difference]: Start difference. First operand 2577 states and 4143 transitions. Second operand 7 states. [2020-10-26 21:03:40,067 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:03:42,388 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:03:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:53,884 INFO L93 Difference]: Finished difference Result 7894 states and 12817 transitions. [2020-10-26 21:03:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:03:53,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 835 [2020-10-26 21:03:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:53,927 INFO L225 Difference]: With dead ends: 7894 [2020-10-26 21:03:53,927 INFO L226 Difference]: Without dead ends: 5323 [2020-10-26 21:03:53,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:03:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-26 21:03:54,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5232. [2020-10-26 21:03:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5232 states. [2020-10-26 21:03:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 7621 transitions. [2020-10-26 21:03:54,138 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 7621 transitions. Word has length 835 [2020-10-26 21:03:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:54,138 INFO L481 AbstractCegarLoop]: Abstraction has 5232 states and 7621 transitions. [2020-10-26 21:03:54,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:03:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 7621 transitions. [2020-10-26 21:03:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-26 21:03:54,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:54,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:03:54,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:03:54,161 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:54,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:54,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1265488525, now seen corresponding path program 1 times [2020-10-26 21:03:54,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:54,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136223067] [2020-10-26 21:03:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:55,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 856 [2020-10-26 21:03:59,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:03:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 21:03:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 21:03:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:59,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:03:59,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:59,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:59,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 21:03:59,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 21:03:59,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:03:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:04:00,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136223067] [2020-10-26 21:04:00,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:04:00,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:04:00,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547535295] [2020-10-26 21:04:00,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:04:00,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:00,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:04:00,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:04:00,199 INFO L87 Difference]: Start difference. First operand 5232 states and 7621 transitions. Second operand 8 states. [2020-10-26 21:04:01,039 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:04:04,456 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:04:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:04:20,053 INFO L93 Difference]: Finished difference Result 21174 states and 32630 transitions. [2020-10-26 21:04:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:04:20,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 838 [2020-10-26 21:04:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:04:20,147 INFO L225 Difference]: With dead ends: 21174 [2020-10-26 21:04:20,147 INFO L226 Difference]: Without dead ends: 15948 [2020-10-26 21:04:20,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 21:04:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15948 states. [2020-10-26 21:04:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15948 to 15895. [2020-10-26 21:04:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15895 states. [2020-10-26 21:04:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15895 states to 15895 states and 22289 transitions. [2020-10-26 21:04:20,677 INFO L78 Accepts]: Start accepts. Automaton has 15895 states and 22289 transitions. Word has length 838 [2020-10-26 21:04:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:04:20,677 INFO L481 AbstractCegarLoop]: Abstraction has 15895 states and 22289 transitions. [2020-10-26 21:04:20,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:04:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 15895 states and 22289 transitions. [2020-10-26 21:04:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2020-10-26 21:04:20,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:04:20,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:04:20,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:04:20,737 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:04:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:04:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash -400954318, now seen corresponding path program 1 times [2020-10-26 21:04:20,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:04:20,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807064541] [2020-10-26 21:04:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:25,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 907 [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:04:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,063 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:04:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:04:26,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:04:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:04:26,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:04:26,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:04:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 21:04:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:26,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:04:26,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:04:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 21:04:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 21:04:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:04:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:04:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:04:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 51 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 21:04:26,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807064541] [2020-10-26 21:04:26,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:26,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:04:26,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867535947] [2020-10-26 21:04:26,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:04:26,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:26,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:04:26,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:04:26,973 INFO L87 Difference]: Start difference. First operand 15895 states and 22289 transitions. Second operand 7 states. [2020-10-26 21:04:27,128 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:04:35,549 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:04:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:04:41,182 INFO L93 Difference]: Finished difference Result 45996 states and 68647 transitions. [2020-10-26 21:04:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:04:41,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 885 [2020-10-26 21:04:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:04:41,329 INFO L225 Difference]: With dead ends: 45996 [2020-10-26 21:04:41,329 INFO L226 Difference]: Without dead ends: 30107 [2020-10-26 21:04:41,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:04:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30107 states. [2020-10-26 21:04:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30107 to 29969. [2020-10-26 21:04:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29969 states. [2020-10-26 21:04:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29969 states to 29969 states and 42361 transitions. [2020-10-26 21:04:42,285 INFO L78 Accepts]: Start accepts. Automaton has 29969 states and 42361 transitions. Word has length 885 [2020-10-26 21:04:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:04:42,285 INFO L481 AbstractCegarLoop]: Abstraction has 29969 states and 42361 transitions. [2020-10-26 21:04:42,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:04:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 29969 states and 42361 transitions. [2020-10-26 21:04:42,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-10-26 21:04:42,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:04:42,395 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:04:42,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:04:42,396 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:04:42,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:04:42,397 INFO L82 PathProgramCache]: Analyzing trace with hash 182383649, now seen corresponding path program 1 times [2020-10-26 21:04:42,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:04:42,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407706362] [2020-10-26 21:04:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 928 [2020-10-26 21:04:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:04:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 21:04:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:04:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:04:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 21:04:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,862 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:04:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:04:47,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:04:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:04:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:04:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:48,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:04:48,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 21:04:48,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:04:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:48,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:04:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:48,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:04:48,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:04:48,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:04:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 21:04:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:48,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:04:48,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:04:48,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:04:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 77 proven. 40 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-26 21:04:48,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407706362] [2020-10-26 21:04:48,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:48,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:04:48,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125046327] [2020-10-26 21:04:48,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:04:48,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:04:48,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:04:48,524 INFO L87 Difference]: Start difference. First operand 29969 states and 42361 transitions. Second operand 7 states. [2020-10-26 21:04:48,665 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:04:52,171 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:05:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:05:02,889 INFO L93 Difference]: Finished difference Result 82028 states and 121887 transitions. [2020-10-26 21:05:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:05:02,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 904 [2020-10-26 21:05:02,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:05:03,108 INFO L225 Difference]: With dead ends: 82028 [2020-10-26 21:05:03,109 INFO L226 Difference]: Without dead ends: 52899 [2020-10-26 21:05:03,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:05:03,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52899 states. [2020-10-26 21:05:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52899 to 47776. [2020-10-26 21:05:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47776 states. [2020-10-26 21:05:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47776 states to 47776 states and 65599 transitions. [2020-10-26 21:05:04,772 INFO L78 Accepts]: Start accepts. Automaton has 47776 states and 65599 transitions. Word has length 904 [2020-10-26 21:05:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:05:04,773 INFO L481 AbstractCegarLoop]: Abstraction has 47776 states and 65599 transitions. [2020-10-26 21:05:04,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:05:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 47776 states and 65599 transitions. [2020-10-26 21:05:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-26 21:05:05,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:05,183 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:05:05,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:05:05,183 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash -419724120, now seen corresponding path program 1 times [2020-10-26 21:05:05,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:05,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029187038] [2020-10-26 21:05:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:05,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:08,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:10,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 997 [2020-10-26 21:05:10,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:05:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-26 21:05:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:05:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 21:05:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:10,709 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:05:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:05:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:10,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:05:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:05:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:05:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:10,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:10,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:05:10,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:10,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:05:10,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:10,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:05:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:10,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:05:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:05:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:10,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:10,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:05:10,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 21:05:10,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:05:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 21:05:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 21:05:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:10,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:05:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:05:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-26 21:05:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 179 proven. 49 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-26 21:05:11,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029187038] [2020-10-26 21:05:11,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:05:11,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:05:11,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052957106] [2020-10-26 21:05:11,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:05:11,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:05:11,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:05:11,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:05:11,500 INFO L87 Difference]: Start difference. First operand 47776 states and 65599 transitions. Second operand 7 states. [2020-10-26 21:05:11,886 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:14,440 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:05:32,892 INFO L93 Difference]: Finished difference Result 115313 states and 163212 transitions. [2020-10-26 21:05:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:05:32,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 973 [2020-10-26 21:05:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:05:33,149 INFO L225 Difference]: With dead ends: 115313 [2020-10-26 21:05:33,149 INFO L226 Difference]: Without dead ends: 64989 [2020-10-26 21:05:33,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:05:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64989 states. [2020-10-26 21:05:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64989 to 62433. [2020-10-26 21:05:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62433 states. [2020-10-26 21:05:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62433 states to 62433 states and 79944 transitions. [2020-10-26 21:05:35,293 INFO L78 Accepts]: Start accepts. Automaton has 62433 states and 79944 transitions. Word has length 973 [2020-10-26 21:05:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:05:35,306 INFO L481 AbstractCegarLoop]: Abstraction has 62433 states and 79944 transitions. [2020-10-26 21:05:35,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:05:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 62433 states and 79944 transitions. [2020-10-26 21:05:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2020-10-26 21:05:35,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:35,457 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:05:35,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:05:35,458 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:35,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:35,459 INFO L82 PathProgramCache]: Analyzing trace with hash -116840697, now seen corresponding path program 1 times [2020-10-26 21:05:35,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:35,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751085653] [2020-10-26 21:05:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:40,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:40,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1086 [2020-10-26 21:05:40,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:05:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-26 21:05:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:05:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:05:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:40,906 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:05:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:05:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:40,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:40,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:05:40,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:05:40,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:05:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:40,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:05:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:40,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:05:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:05:41,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 21:05:41,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:05:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:05:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:05:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:05:41,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:05:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:05:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 21:05:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:05:41,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 21:05:41,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:05:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-26 21:05:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:41,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:41,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:41,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:05:41,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:05:41,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-26 21:05:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:41,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 248 proven. 136 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-26 21:05:41,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751085653] [2020-10-26 21:05:41,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:05:41,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:05:41,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615401120] [2020-10-26 21:05:41,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:05:41,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:05:41,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:05:41,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:05:41,890 INFO L87 Difference]: Start difference. First operand 62433 states and 79944 transitions. Second operand 7 states. [2020-10-26 21:05:42,164 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 21:05:45,214 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:06:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:03,838 INFO L93 Difference]: Finished difference Result 146221 states and 198320 transitions. [2020-10-26 21:06:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:06:03,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1060 [2020-10-26 21:06:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:04,216 INFO L225 Difference]: With dead ends: 146221 [2020-10-26 21:06:04,216 INFO L226 Difference]: Without dead ends: 84628 [2020-10-26 21:06:04,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:06:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84628 states. [2020-10-26 21:06:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84628 to 83843. [2020-10-26 21:06:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83843 states. [2020-10-26 21:06:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83843 states to 83843 states and 107379 transitions. [2020-10-26 21:06:07,796 INFO L78 Accepts]: Start accepts. Automaton has 83843 states and 107379 transitions. Word has length 1060 [2020-10-26 21:06:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:07,797 INFO L481 AbstractCegarLoop]: Abstraction has 83843 states and 107379 transitions. [2020-10-26 21:06:07,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:06:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 83843 states and 107379 transitions. [2020-10-26 21:06:07,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2020-10-26 21:06:07,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:07,932 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:07,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:06:07,932 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:07,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1184943424, now seen corresponding path program 1 times [2020-10-26 21:06:07,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:07,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80932219] [2020-10-26 21:06:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:08,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:13,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:13,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1105 [2020-10-26 21:06:13,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:06:13,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 21:06:13,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:06:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-26 21:06:13,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:13,354 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:13,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:13,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:13,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:13,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:06:13,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:13,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:13,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:13,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:06:13,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:13,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:06:13,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:06:13,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:06:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:13,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:06:13,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-26 21:06:13,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 21:06:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 21:06:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:14,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:06:14,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 21:06:14,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 21:06:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-26 21:06:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:14,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:14,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:06:14,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 21:06:14,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:06:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-26 21:06:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:06:14,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 309 proven. 120 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-26 21:06:15,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80932219] [2020-10-26 21:06:15,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:06:15,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:06:15,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440000283] [2020-10-26 21:06:15,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:06:15,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:15,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:06:15,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:06:15,234 INFO L87 Difference]: Start difference. First operand 83843 states and 107379 transitions. Second operand 8 states. [2020-10-26 21:06:15,382 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 93